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Heavy rains inundate northeast India
Dozens of people are reported dead amid torrential rains over the past week in India’s northeastern region, local media reported. The most heavily affected states are Assam and Arunachal Pradesh. In Assam, more than 640,000 people have been affected as the Brahmaputra River and its tributaries overflowed beyond danger levels, flooding many areas. Around 40,000 […]
Study shows Vietnam’s ethnic communities’ grapple with hydropower plant impacts
- A recently published study based on fieldwork in northwest Vietnam shows how even small hydropower projects can have a large impact on communities.
- With an increase in small hydropower projects, residents of Bien La commune report loss of farmlands, fishing, local jobs and culture, as well as insufficient compensation.
- While these impacts force the villagers to migrate to other districts in search of jobs, the community women try to revive their culture of traditional textiles and indigo dyeing to preserve their way of life.
Marine artificial upwelling, problematic climate solution slow to advance
- Artificial upwelling is a form of geoengineering that aims to use pipes and pumps to channel cool, nutrient-rich water from the deep ocean to the surface. In doing so, it could fertilize surface waters, prompting the growth of plankton, which can then absorb and store large amounts of atmospheric carbon.
- Long considered a potential marine carbon dioxide removal (CDR) method, artificial upwelling has more recently been coupled with seaweed farming to potentially soak up even more atmospheric CO2.
- But technological challenges have plagued open-water upwelling experiments, while environmentalists worry that large-scale use could ultimately prove ineffective and ecologically harmful.
- Experts state that though upwelling could prove a viable solution to improve fisheries and protect coral reefs from marine heat waves, more research is needed. Considering the rapid current pace of climate change, it’s debatable as to whether implementation at scale could come in time to stave off dangerous warming.
In Pakistan, desert irrigation plans spark protests & fears among Sindh farmers
- In Pakistan, thousands of protesters have fought against the Cholistan Canal Project, which would divert water from the Indus River to irrigate millions of hectares of desert for corporate farming.
- Opponents say the project would threaten local desert species and leave small-scale farmers and fishers in Sindh province without the water they need; this comes on top of an existing water shortage in the region.
- Water has been one of the region’s most contentious issues, dating back decades and causing a rift between Sindh province and the Federation of Pakistan; now, the future of Pakistan’s water is even more uncertain since India suspended the Indus Waters Treaty of 1960, which governs shared waters between the two countries.
Community-led system boosts fisheries in a corner of fast-depleting Lake Malawi
Lake Malawi’s fish stocks are declining, but one community stands apart: around Mbenje Island, a traditional fisheries management plan has ensured thriving fish populations for generations, Mongabay contributor Charles Mpaka reports. Landlocked Malawi is highly dependent on the lake, which supplies 90% of the country’s fish catch; more than 1.6 million people rely directly or […]
Study offers new tool to compare environmental impacts of crops
In a recently published study, researchers offer a new tool to compare how different crops affect the environment in different regions. Named PLANTdex, the tool assesses the environmental impact of a crop by considering five key indicators — greenhouse gas emissions, freshwater biodiversity loss, marine biodiversity loss, land biodiversity loss, and water resource depletion — […]
Dredging and pollution threaten fishing in the Niger River
- Some fishers in Bamako, Mali’s capital, are raising concerns about dredging of the Niger River in search of gold.
- They say the combination of dredging and increasing plastic pollution is causing fish stocks to decline.
- Damage to the river’s ecosystems is taking a toll on their livelihoods, with some forced to give up fishing for the more lucrative, but environmentally destructive, activity of river sand mining.
Rwanda’s Olivier Nsengimana inspires protection for gray crowned cranes in East Africa
- Ten years ago, the gray crowned crane (Balearica regulorum), faced with habitat loss and capture for illegal trade, was quietly slipping toward local extirpation in Rwanda.
- The Rwanda Wildlife Conservation Association (RWCA), led by veterinarian Olivier Nsengimana, has been at the forefront of a campaign to end the keeping of cranes as pets, rehabilitating many captive birds and releasing them into the wild.
- The association is also enlisting community members to strengthen protection of the cranes’ wetland habitat from encroachment and damage — a strategy that it is extending to neighboring countries via partnerships with other NGOs.
- For these efforts, Nsengimana has been awarded the 2025 Whitley Gold Award, making him a two-time winner after he first received the award in 2018.
Lithium Triangle mining may strain water sources more than expected, study says
- Measuring water availability for lithium extraction can still be unpredictable, especially in the high-altitude Lithium Triangle in Chile, Argentina and Bolivia.
- Current models can overestimate how much water is available, potentially exacerbating scarcity for local communities, according to a new study in Communications Earth and Environment.
- The study suggests using a more accurate model as well as improving transparency and resources for gathering observational data where lithium is being extracted.
Uttarakhand’s extreme weather wreaks havoc on crops, livelihoods & futures
- In Uttarakhand, extreme weather events like droughts, erratic rainfall and hailstorms have severely affected farming, leading to lower crop yields, increased pests and financial distress for farmers.
- Festivals and agricultural practices linked to seasonal changes are losing their significance due to shifting flowering and harvesting periods, affecting both cultural traditions and livelihoods.
- Reduced snowfall and irregular rainfall have led to water shortages, depleting natural aquifers and springs that local communities rely on for drinking water and irrigation, while forest fires, intensified by extreme heat, have caused loss of human life and biodiversity.
- Climate change is also impacting tourism and small businesses, with rising temperatures and unpredictable weather affecting visitor numbers and local economies.
Floods devastate normally arid parts of Australia’s Queensland
Intense flooding submerged usually dry areas of Queensland state in eastern Australia during the last week of March, forcing many people to evacuate and leave their livestock behind. David Crisafulli, the Queensland premier, called the floods “unprecedented” as several places in western Queensland recorded the worst floods in the last 50 years, CNN reported. Some […]
Groundwater overuse puts Brazil’s river flow at risk, study finds
- A recent study reveals the potential risk of river water flowing underground in Brazil due to high groundwater extraction, which could lead to losses in streamflow.
- Researchers found a correlation between groundwater use and river flow reductions, particularly in dryland areas.
- Overexploitation of groundwater could severely affect Brazil’s agriculture, energy production, and ecosystems, with illegal and unregistered wells likely contributing to the problem.
- Experts stress the importance of improving water resource management, with calls for better hydrogeological monitoring and more localized studies to better understand the potential harms facing Brazil’s water sources.
Photos: Ethiopian farmers blend tradition, innovation to sustain centuries-old agriculture
- For more than 400 years, the people of the Konso highlands in Ethiopia have used terracing and traditional farming methods to adapting to their harsh environment, building a globally recognize agricultural system on steep, erosion-prone land.
- However, in recent decades, climate change has altered once-predictable weather patterns, making it harder for small-scale farmers to maintain their traditional farming practices and secure their livelihoods.
- Farmers are adjusting to changing weather patterns by blending traditional farming methods with new techniques, aiming to safeguard their livelihoods and ensure the land remains fertile and productive.
- While experts acknowledge farmers’ efforts to adapt, they warn that these efforts alone will not suffice as climate change impacts intensify, stressing the need for external support to sustain local livelihoods and preserve traditional farming practices.
World Water Day: 3 stories of resistance and restoration from around the globe
More than 2 billion people around the world live without access to safe drinkable water, as rivers, groundwater, lakes and glaciers face continued threats of pollution and overexploitation due to urbanization, environmental destruction, and climate change. This World Water Day, Mongabay looks back at some of its coverage from 2024 on how local communities are […]
A tale of two cities: What drove 2024’s Valencia and Porto Alegre floods?
- In 2024, catastrophic floods occurred in the cities of Porto Alegre, Brazil, and Valencia, Spain. These two record floods number among the thousands of extreme weather events that saw records for temperature, drought and deluge shattered across the globe. Such horrors have only continued in 2025, with the cataclysmic wildfires in Los Angeles.
- Scientists have clearly pegged these disasters to carbon emissions and intensifying climate change. But a closer look at Porto Alegre and Valencia shows that other causes contributed to the floods and droughts there, and elsewhere on the planet — problems requiring nuanced but Earth-wide changes in how people live and society develops.
- Researchers especially point to the drastic destabilization of the world’s water cycle, which is increasingly bringing far too little precipitation to many regions for far too long, only to suddenly switch to too much rain all at once — sometimes a year’s worth in a single day, as happened in Valencia when 445.5 mm (17.5 inches) fell in 24 hours.
- The problem isn’t only CO2 emissions, but also local deforestation and hardened urban infrastructure that promote flooding. But what may be seriously underestimated is how large-scale destruction of forest, marshland and other vegetation is dangerously altering rainfall patterns, a theory proposed decades ago by a little-known Spanish scientist.
Yaku Raymi: The Quechua Ritual to Save a Glacier
SANTA FE, Peru — What happens when a glacier dies? In the community of Santa Fe, in Peru, water is disappearing, animals are dying due to a lack of pasture and rainfall has become sporadic. The community members know that climate change is affecting the apu, or mountain god, but they say that transforming a […]
Lake Chad isn’t shrinking — but climate change is causing other problems
- Contrary to popular conception, Lake Chad is not shrinking; new research shows that the volume of water in the lake has increased since its low point in the 1980s.
- However, more intense rain in the region, coupled with the impacts of historic drought, increases the risk of flooding.
- The region is also plagued by continuing conflict and insecurity, making to harder for people to adapt to the impacts of climate change.
- A Lutheran World Federation project is working with communities in the Lake Chad Basin on sustainable agriculture and fisheries, land restoration, conflict resolution and more.
Funerary practices in Fiji protect marine areas while honoring the deceased
- Indigenous (iTaukei) people across Fiji have historically protected their freshwater and marine areas in memory of chiefs and community members who have passed away. These are called aquatic funerary protected areas (FPAs).
- Researchers published a study to shine a light on this sustainable resource management practice, which they say could present a community marine conservation solution in the region but is largely absent from scientific literature and rarely implemented as a strategy.
- FPAs differ in size and practice but can stretch from shoreline to fringing reefs and tend to ban fishing and harvesting of many species for 100 nights after they are declared.
- From 1960 to 2019, communities established a total of 188 FPAs where 44% of FPAs were protected for 100 nights, and 47% protected all resources and associated ecosystems form fishing and harvesting.
In Nepal, a eucalyptus boom became an ecological cautionary tale
- Nepal’s Sagarnath Forest Development Project which ran a reforestation program from 1977-1984 and introduced eucalyptus as a fast-growing, low-maintenance solution for deforestation and fuelwood needs.
- While eucalyptus initially thrived, it depleted soil moisture and negatively impacted nearby crops, leading to reduced yields and financial losses for the farmers who had replaced traditional crops like rice and mustard with large-scale eucalyptus plantations.
- Discontent over eucalyptus’s effects, and the lack of guidance by those who promoted the planting scheme, led to widespread removal of trees, legal disputes among farmers, and complaints to local governments.
- Experts say such large-scale exotic tree plantations are no longer permitted under national and international biodiversity laws, with the project’s failure highlighting the importance of considering ecological sustainability, soil health and informed decision-making in reforestation efforts.
‘Silent killing machines’: How water canals threaten wildlife across the globe
- Water canals worldwide are causing widespread wildlife drownings, with significant losses recorded in Argentina, Mexico, Spain, Portugal and the U.S., particularly impacting threatened species.
- Scientists emphasize the lack of awareness and research on this issue, warning that canals act as “wildlife traps,” exacerbating biodiversity loss and habitat fragmentation.
- Proposed solutions include covering canals, installing escape ramps, redesigning structures, and implementing country-specific mitigation strategies to balance irrigation needs with wildlife conservation.
Photo series on Himalayan water-saving ice stupas wins global award
A photo series on ice stupas — artificial glaciers in the northern Indian Himalayas — recently won first place in the 2024-25 Onewater’s Walk of Water: Water Towers photo story contest. Ice stupas are towering man-made ice structures engineered to store winter water and provide irrigation during the dry summer months. Slovenian photographer Ciril Jazbec […]
As the rainforest gets drier, Amazon Indigenous groups thirst for clean water
- The 2024 extreme and historical drought that hit the Amazon exposed a chronic problem: access to drinking water and sanitation in Indigenous lands, where only a third of households have proper water supply systems.
- In some Amazon rivers in Brazil, cases of diseases related to inadequate basic sanitation, such as malaria and acute diarrhea, have been increasing amid climate change and population growth.
- Indigenous organizations have been demanding the implementation of adapted infrastructures in the villages, such as water tanks, wells, cesspools and septic tanks.
- The Brazilian federal government already has resources and plans to begin addressing these issues.
How a Philippine town is dealing with the fallout of its own popularity
El Nido in the Philippines was once a small fishing town, but promotion on social media over the last decade led to a dramatic influx of tourists. Tourism has helped the local economy, but also resulted in coastal water contamination, Mongabay’s Keith Anthony Fabro reports. Home to 50,000 residents, El Nido welcomed 10 times that […]
Seeking the ‘humanity–wetland’ balance: Interview with Zimbabwean activist Jimmy Mahachi
- For the past decade, Jimmy Mahachi has advocated for his community’s right to water and the preservation of the Cleveland Dam wetland, a peri-urban wetland in the Zimbabwean capital Harare.
- The wetland is threatened by sand mining, development and the overexploitation of water resources.
- Some residents of the New Mabvuku suburb where Mahachi lives haven’t had running water for more than 30 years, forcing them to collect water from unprotected and even contaminated sources.
- In an interview with Mongabay, Mahachi sheds light on the pressures on environmental activism in Zimbabwe and the connection between humanity and wetlands.
Explosive ‘bomb cyclone’ pummels Europe, hitting UK hardest
Back-to-back storms have ravaged the U.K. and neighboring Ireland and France, causing torrential rains, power outages and flooding the past several days and overall “wild weather,” the Associated Press reported. Storm Éowyn first struck the Britain and Ireland on Jan. 23, bringing with it heavy rains and strong winds, followed by Storm Herminia soon after. […]
Historic Arctic freeze for US South and record rain in Western Australia
The southern states of the U.S. are facing a winter storm this week that will bring heavy snow and ice to a region that rarely experiences such conditions. More than 220 million people are expected to be affected from Texas to South Carolina. Several states, including Louisiana, Georgia, Alabama, Florida and Mississippi, have each already […]
Serious groundwater contamination in several parts of India: Report
A recent analysis has revealed that India’s groundwater contains pollutants in excess of permissible limits. This contamination is driven by both natural geochemical processes and human activities like agricultural and industrial practices, reports contributor Esha Lohia for Mongabay India. To understand the state of groundwater in India, the Central Ground Water Board (CGWB) assessed more […]
River dredging in Bangladesh: Investigation shows government claims don’t add up
- A large part of Bangladesh, the country with the highest number of rivers, is a delta formed by sediments carried down by rivers from the Himalayan region. The population’s most significant livelihoods — agriculture, navigation and inland fisheries — depend on these waters.
- These rivers carry about 2.4 billion tons of sediment annually, including sand, clay and silt, a large portion of which needs to be cleared by dredging for navigability.
- As per a 2017 notice by Bangladesh’s water transport authority, the country restored around 547 kilometers (340 miles) of waterways between 2009 and 2017 to the county’s river system. The authority’s 2022-23 annual report says that between 2010 and 2023, the volume of 3,700 km (2,300 mi) of waterways increased.
- However, Mongabay found the authority’s claims of restoring waterways on this large scale is only on papers, as many of the rivers that are recorded as dredged are still not navigable.
Brazil’s shipping channel plans in Amazonian rivers will worsen climate change, experts warn
- Dredging and rock-blasting ever-drier rivers for new channels in Brazil might not achieve agribusiness’s goal of cheaper, year-round transport, experts warned, suggesting existing railways as price-comparable and more climate-resilient.
- Though waterway transport is promoted as lowering emissions, in fact proposed new shipping channels on the Tocantins and Madeira rivers increase carbon emissions and deforestation, experts told Mongabay.
- New shipping channel plans used old water data, stopping in 2017 for the Tocantins channel, and didn’t do climate risk projections or climate impact studies. Experts urge these studies must be done, or risk tens of billions of investments in rock-blasting and dredging river beds, leaving “ruins” and “abandoned projects.”
- An August lawsuit by federal prosecutors charges that licensing of rock-blasting and dredging in a 500-km stretch of the Tocantins River in Brazil is an illegal “trick” to circumvent legally required full environmental review of the whole Araguaia-Tocantins channel, for which an economic-technical feasibility study was never done. In March 2022, Ibama’s licensing director determined it was “unviable.”
Across continents, Mongabay fellows share insights from reporting in the field
- Mongabay’s Y. Eva Tan Conservation Reporting Fellows spend six months diving into climate, science and environment reporting — and gaining insights that shape the way they approach their work as environmental journalists.
- In this essay, three recent fellows share some of the biggest lessons they learned through the reporting they published during the fellowship.
- As these reflections from India, Brazil and Nigeria show, there are many areas of overlap experienced among communities across regions and continents.
As lithium mining bleeds Atacama salt flat dry, Indigenous communities hit back
- The Council of Atacameño Peoples filed a complaint in October 2024 against lithium mining companies operating in Chile’s Atacama salt flat, accusing them of causing the land to sink around their extraction wells.
- The complaint was based on findings from a study published in July that revealed portions of the salt flat are subsiding by up to 2 centimeters, or nearly an inch, per year.
- Scientists warn that one of the main consequences could be the loss of the aquifer’s storage capacity.
- They also point out that since the salt flat lies on a tectonic fault, the subsidence could spread further, including to two protected areas in the region that are home to flamingos and other rare wildlife.
Water returns to Amazon rivers amid historic drought
The Amazon River and its tributaries, which make up the largest freshwater basin in the world, are showing signs of recovery after dropping to record-low levels between September and November 2024. Abnormally low rainfall and high temperatures across the Amazon caused water levels to plummet, shutting down river transport, isolating communities and leaving industries without […]
Thai citizens protest plans for Mekong dam amid transboundary concerns
- Citizens in northern Thailand staged protests along the shore of the Mekong River on Dec. 7 to draw attention to a controversial dam slated to be built on the river’s mainstream over the border in Laos.
- They demanded Thai banks and policymakers withdraw their support for the scheme due to its as-yet-unknown cross-border environmental and social impacts.
- The protests follow a particularly turbulent wet season marked by record-breaking floods that wrought high costs on riverside communities. Experts have said the dam would exacerbate such events should it be built.
- Halting the project to allow sufficient time for thorough transboundary ecological and social studies is absolutely critical, the activists said.
Controversial U.S. Supreme Court decision threatens the country’s inland wetlands with new development, study says
- In its May 2023 decision Sackett v. Environmental Protection Agency, the U.S. Supreme Court all but gutted the nation’s Clean Water Act of 1972, only maintaining protections for large waterways and opening inland wetlands for development.
- An estimated 7 million to 36 million hectares (17 million to 90 million acres) of nontidal wetlands may have lost federal protections, according to a new analysis.
- Filling wetlands would harm downstream water quality, eliminate critical ecological habitats and elevate the risk of flooding, concerned researchers say.
- The largest wetland areas at risk in the U.S. are near the Gulf of Mexico and Atlantic Ocean coasts and around the inland Great Lakes.
Kenya blames and evicts Ogiek people for deforestation, but forest loss persists
- Long-running evictions of Indigenous Ogiek communities from Kenya’s Mau Forest, whom the government blames for deforestation, haven’t led to any letup in rates of forest loss, satellite data show.
- A human rights court ruling in 2017 recognized the Ogiek as ancestral owners of the Mau Forest and ordered the Kenyan government to compensate them, but it’s done little since then.
- Preliminary satellite data and imagery for 2024 indicate the Mau Forest will suffer extensive losses this year, even after the government evicted more than 700 Ogiek in November 2023.
- The country’s chief conservator of forests has cast doubt on the findings of increased deforestation, while a top official responsible for minorities and marginalized peoples says forest communities can be destructive.
PNG climate migrants sail away with native trees to their new home
Residents of the Carteret Islands in Papua New Guinea are on a “green migration,” contributor Thibault Le Pivain reports for Mongabay. The islanders are leaving their homes due to food shortages resulting from environmental degradation and rising sea levels, and sailing to a larger island in the country, taking with them plants that play important […]
Western Kenya’s most important water-capturing forest is disappearing, satellites show
- Mau Forest is one of the largest forests in East Africa, and the most important water catchment in western Kenya, providing water for millions of people.
- Mau is also home to a plethora of wildlife, including endangered species such as African bush elephants (Loxodonta africana), African golden cats (Caracal aurata) and bongo antelopes (Tragelaphus eurycerus).
- But Mau lost some 25% of its tree cover between 1984 and 2020, and satellites show continuing loss.
- The primary drivers of deforestation are agricultural expansion, including slash-and-burn farming for cattle grazing and crop cultivation.
Researchers find high levels of mercury in Amazon’s Madeira River water & fish
- In a groundbreaking expedition, researchers from Harvard and Amazonas State University began monitoring water quality and mercury contamination in the Amazon Basin’s largest tributary.
- The Madeira River Basin has been heavily impacted by human actions, such as hydropower plants, deforestation and illegal gold mining, which degrade its ecosystems.
- Initial results from Harvard reveal high levels of mercury in the Madeira, although still below the limit recommended by Brazil’s authorities.
- Predatory fish species showed mercury levels above the recommended limit, while scalefish traditionally consumed by riverine populations were below.
As climate change upends Ethiopia’s pastoral wisdom, adaptations can help
- In the face of climate change, pastoral and agropastoral communities in eastern Ethiopia remain at the receiving end of worsening droughts and climate shocks that have taken a toll on animal rearing and traditional livelihoods.
- For generations, pastoralists and agropastoralists across the country have used traditional knowledge and weather forecasting for preparedness and drought conditions.
- But these techniques are no longer as effective in the face of frequent unpredictable dry spells and population pressures on pasture.
- Researchers suggest combining this traditional knowledge with innovative strategies to help pastoralists gather real-time data on water conditions that can be key to drought adaptation in the region.
In a Noah’s Ark move, PNG migrants bring thousands of trees to safer ground
- Facing sea level rise and food insecurity, 17 families from the Carteret Islands have relocated to nearby Bougainville, bringing hundreds of specimens of trees and plants, representing dozens of species, across a small stretch of ocean.
- They’ve planted more than 175,000 plants, breathing life into a forest on new lands donated by the Catholic Church.
- This “green migration” is helping them preserve their lifestyle and identity, sources say, echoing the journey of early Polynesian settlers who carried “canoe plants” as they sailed and settled across the Pacific.
- Scientists say green migrations could become part of climate relocation planning, but there also needs to be careful consideration of whether species can be moved and become unsustainably invasive.
Dam displaces farmers as drought parches Indonesia’s Flores Island
- In 2015, Indonesia announced the construction of seven dams to provide water in East Nusa Tenggara province, an eastern region of the archipelago where access to freshwater is scarce during the annual dry season.
- One of the national priority dams, the Lambo Dam on Flores Island, has yet to be finished because of a land dispute with Indigenous communities in Nagekeo district.
- Research shows that much of Indonesia, particularly in the east, face increasing water stress due to climate change, as well as drought spikes brought on by the positive Indian Ocean dipole and El Niño patterns.
Fresh calls for oil giants to pay $12 billion for Niger Delta pollution
The governor of Nigeria’s Bayelsa state has renewed calls for oil companies like Shell and Eni to pay $12 billion to clean up the pollution from their operations in the state over the past 50 years. The call comes more than a year after a Bayelsa state-appointed commission released its report in May 2023 detailing […]
In Kenya, a water fund brings to light Indigenous cultural identity issues
- Two years into its implementation, the Eldoret-Iten Water Fund (EIWF) in Kenya is helping to protect vital water resources, restore degraded forests and farmlands and work with local communities.
- While the EIWF has seen considerable success so far, several hurdles have emerged — including disputes with the Sengwer Indigenous community.
- The issues with the Sengwer community stem at least in part from decades of controversy over cultural identity and names, dating to colonial times.
- Despite these challenges, the EIWF, administered through The Nature Conservancy, has made progress and local farmers say they are hopeful about the future; for further details on the EIWF, see Part I of this story.
A Kenya water fund partners with farmers to protect vital resources
- Kenya’s Eldoret-Iten Water Fund (EIWF) is one of dozens throughout the world, established to address threats to important water supplies.
- Administered through The Nature Conservancy, the EIWF’s objectives include partnering with thousands of local farmers to adopt sustainable soil and water conservation practices, restoring and protecting more than 120,000 hectares (300,000 acres) of degraded forests and farmlands, planting more than 1 million trees, reducing sediment flow into rivers and supporting farmers with rainwater harvesting.
- The EIWF also works with local Indigenous communities and includes projects such as beekeeping.
- The EIWF is a response to years of farming practices, population growth, deforestation for charcoal and wood and other factors that have diminished and threatened local water supplies.
Study warns that loosened legislation is driving deforestation in Bahia’s Cerrado
- Unlike Amazonia, where illegality is the rule, authorized deforestation is a greater concern for researchers and environmentalists in Bahia’s Cerrado.
- A new book shows how the appropriation of water by agribusiness is intensifying conflicts in western Bahia, where both deforestation and cattle farming are spreading rapidly.
- Researchers view Brazilian agribusiness operations as agrarian extraction—a model with high social and environmental impact which concentrates wealth, similar to mineral extraction.
Chilean Indigenous association participates in key study for lawsuit against mining
- In a unique model for Latin America, a council of Lickanantay people in northern Chile created an environmental unit made up of hydrogeologists, engineers and environmental monitors from the territory’s communities to monitor the territory.
- Their study with a national university shows that the La Brava lagoon, located on the edges of the Atacama salt flat, is fed in part by the salt flat’s brine, which makes it vulnerable to mining activities established in the heart of the salt flat.
- Findings from the study were key in a lawsuit brought by the state defense council against three mining companies for irreparable damage to the Monturaqui-Negrillar-Tilopozo aquifer, the main water source for these lagoons.
Despite court ruling, Yaqui water rights abuses ignored
- For decades, the Yaqui peoples in the northwestern Mexican state of Sonora have been fighting to defend their rights to the Yaqui River, which is sacred to the Indigenous tribe and has been drained of all its water in their territory after decades of overexploitation, unequal water distribution and droughts.
- In 2010, the government approved the construction of an aqueduct, known as the Independencia Aqueduct, to supply water to several cities in the state, which was later found to be a violation of the tribe’s rights.
- Despite a favorable court ruling, which found that the Mexican government did not consult the Yaqui tribe before the aqueduct’s approval, it did not suspend its construction, which was inaugurated in 2012, despite evidence that it would cause irreparable damage to the community.
Community-led wetland restoration may hold key to Harare’s water crisis
- In Zimbabwe’s biodiverse but fast-developing capital city of Harare, a small community has formed a wetland restoration project, known as Conservation of Monavale Vlei, to protect biodiversity and prevent degradation.
- The Monavale wetlands are under threat in part due to environmental problems caused by development, inadequate infrastructure and poor waste management.
- Over the years, the city’s water tables have been falling, as Harare extracts groundwater faster than the aquifers are replenished to meet the demands of its growing population. This issue combined with drought results in a serious water crisis.
- By replicating the Monavale Vlei model, which supports rich biodiversity, residents and experts said the city could benefit from the many ecosystem services the project provides, including water storage, groundwater recharge and water purification.
High CO2 levels are greening the world’s drylands, but is that good news?
The increased concentration of CO2 in the atmosphere since pre-industrial times isn’t just driving climate change — it’s also making much of the world’s drylands greener with increased plant growth. This is known as the CO2 fertilization effect, and politicians sometimes cite it to rhetorically downplay the negative global impacts of climate change, saying it’s […]
Ever-smarter consumer electronics push world toward environmental brink
- Semiconductor microchips are the beating heart of the digital age — processing vast, ever-growing volumes of data on our smart phones, computers and other electronic devices, and on data center servers worldwide.
- As manufacturers compete to produce the ever-smaller, more powerful electronic devices consumers want, new state-of-the-art silicon chips must be designed to handle exponentially advancing computing challenges.
- But the sourcing and manufacture of these increasingly complex silicon chips is material-, energy- and water-intensive, doing major environmental harm — producing major carbon emissions and polluting with PFAS and other toxins.
- Also, the smaller and more integrated chips become, the harder they are to recycle, creating vast sums of e-waste. Experts say governments need to ensure companies embrace environmental stewardship and circular economy standards.
Record-breaking floods in northern Thailand intensify scrutiny of Mekong dam project
- Major flooding along Mekong tributaries in northern Thailand has heightened scrutiny of plans to build a major hydropower dam spanning the pivotal watercourse over the border in Laos.
- Experts say the Pak Beng Dam would worsen severe seasonal flooding by elevating water levels upstream into the stretch of the Mekong that flows through northern Thailand.
- In 2023, Thailand’s national electricity authority signed an agreement to purchase electricity from the controversial scheme, essentially greenlighting the next phase of development.
- This week, farmers, activists and policymakers met in the flood-prone province of Chiang Rai to discuss the potential cross-border impacts of the dam, with many speakers urging the Thai government and Thailand-based investors to reconsider their support of the scheme due to the risks of the dam exacerbating devastating floods.
Bangkok turns to urban forests to beat worsening floods
- Bangkok is launching city forests to help beat flooding by soaking up excess rainwater runoff.
- A new park slated to open in December will feature 4,500 trees, a floodplain and a weir to slow the flow of water; another newly opened $20 million city forest acts as a sponge during the monsoon season.
- Bangkok is sinking, and fast: according to the World Bank, 40% of the Thai capital could be flooded by 2030.
- The key to solving the city’s flooding problem is to learn to live with water, not to rid the city of water, says one landscape architect helping to launch the urban forests.
Lack of research as contaminated Yaqui River poses health risks
- Amid a water crisis, Yaqui communities in the northwestern Mexican state of Sonora lack safe drinking water due to contamination by arsenic, salinity and heavy metals as unveiled by several studies over the years.
- The water crisis, driven by decades of overexploitation, unequal water distribution and drought, intensifies contamination, particularly affecting coastal areas with saltwater intrusion and surpassing safe limits in certain regions.
- Members of the Yaqui tribe blame mining operations and agribusiness for the contamination, but there are few studies to confirm their source.
- They argue contamination has led to diabetes and health complications among community members, as well as cultural impacts.
Drought forces Amazon Indigenous communities to drink mercury-tainted water
- River levels in parts of the Brazilian Amazon are even lower than in 2023, when the region experienced its worst drought.
- In the Munduruku Indigenous Territory, in Pará state, low river levels are forcing communities to drink water contaminated by mercury.
- Indigenous leaders call for immediate help while children suffer from diarrhea and stomachaches.
Crop fields make way for profitable orchards in Bangladesh, imperiling food security
- The mid-western region of Bangladesh has long been characterized by dry weather due to low rainfall. However, over the last four decades, the agriculture thrived here due to a government-run irrigation project that relies on groundwater.
- A few years ago, following a significant increase in rice production, but a decrease in the groundwater level, the government started rationing irrigation to save groundwater.
- Consequently, the farmers began to opt for alternative non-water intensive crops and converted their arable lands into orchards, cultivating fruits like mangoes and lychees.
- Experts feared that although the transition may bring a secure cash crop for the farmers, this change in agriculture could hamper the country’s overall food security.
Conserving & restoring waterways can mitigate extreme urban heat in Bangladesh
- Conserving existing wetlands and restoring urban waterways can be an effective way for urban planners to protect city residents from extreme heat.
- In Dhaka, as in other large cities, paved urban landscapes absorb heat and intensify the risk of heat waves. Areas of cities that are prone to such thermal intensity are known as “heat islands.”
- Urban sprawl frequently fills or covers wetlands and waterways as cities grow.
- Conserving green spaces is important to reducing urban heat and protecting people in cities from extreme heat, but conserving wetlands and waterways is even more effective.
Acre’s communities face drinking water shortage amid Amazon drought
- Acre’s population experienced a flood at the start of 2024 and is now suffering from water shortages due to the severe drought.
- Authorities have installed water tanks for residents of rural communities in Rio Branco, but supplies are insufficient.
- After the extreme drought of 2023, the Amazon is preparing for a new drought, which is already showing signs that it could surpass last year’s crisis.
Uttarakhand villagers thirst for water as tourism, temps & development rise
- An influx of tourists and new residents to Uttarakhand, driven by heat waves and work-from-home options, is straining local resources, particularly water.
- Nearly 12,000 natural springs reportedly have dried up in recent years, with 90% of Uttarakhand’s population depending on these vital water sources.
- Widespread construction for tourism disrupts aquifers and natural water percolation, exacerbating water scarcity and affecting water quality; water sources are further threatened by changing rainfall patterns and rising temperatures.
- Local residents, especially women and marginalized communities, face increased hardships in accessing water amid growing allegations of water diversion by hotels.
Holistic care for an Ethiopian lake system: Interview with Redwan Mohammed
- Redwan Mohammed leads a project to restore Ethiopia’s Ziway-Shalla river basin, which is under pressure due to deforestation and erosion.
- Abijata-Shalla Lakes National Park lies at the basin’s heart, centered on a pair of saline lakes that provide vital habitat to migratory waterbirds.
- The river basin is also home to around 60,000 farmers and herders as well as commercial flower farms and other light industry.
- Mohammed’s employer, Wetlands International, focuses on protecting wetlands because they provide essential ecosystem services such as water filtration, flood control, and habitat for wildlife.
Small steps towards larger goal of protecting East African wetlands
- Conservation NGO Wetlands International had lofty ambitions when it rolled out its Source to Sea project in East Africa in 2021, covering the Rift Valley wetlands and the Indian Ocean mangroves.
- Difficulties that arose included underestimating the time needed to get government agencies, civil society and community groups on board, overambitious planning, and communication barriers with locals.
- They quickly realized that residents’ urgent livelihood needs needed to be acknowledged and addressed before more abstract concepts such as wetland conservation and integrated catchment management could be introduced.
- Today, the project has made essential contributions to the lives of participating communities and the catchment’s health, created awareness of mangroves and wetlands among the different groups involved, and helped influence policies on water resource management.
Cerrado’s current drought impossible without human-caused climate change: Study
- Since early 2000s, Brazil’s Cerrado has been suffering severe drought episodes, with water shortages affecting hydroelectric power, agriculture and water access. Its water supply has also been under pressure from encroaching agriculture and deforestation.
- Analysis of 700 years of climate data indicated an unprecedented drying trend that started around the 1970s, which experts say was made possible by human-induced warming, and not by climate’s natural variability.
- Researchers collected data from stalagmites in one cave in the state of Minas Gerais and built a climate record for the Cerrado.
Indigenous communities in the Bolivian Amazon combat droughts and floods
- The Tsimané, Mosetén and Tacana Indigenous ethnic groups in the Bolivian Amazon feared the worst for early 2024. They believed that the cycle of floods would bring misfortune and affect their communities
- However, the water management projects they have implemented have provided favorable results and helped the communities avoid disasters. This is an example of a communitywide effort to commemorate World Water Day 2024, which was March 22.
- Members of these Indigenous communities collect water from several watersheds and transport it through kilometers of pipes so that it reaches their homes, a complex engineering project that also has allowed them to adapt to the more intense droughts and floods caused by climate change.
The nine processes that keep Earth stable
Modern humans, (Homo sapiens), evolved some 300,000 years ago. But modern human societies as we know them—think agriculture, animal domestication, and industrialization—developed only in the last 10,000 years or so. This was largely thanks to a stable climate that emerged around 12,000 years ago. The stability of the planet that allowed human civilization to flourish […]
Loss of water means loss of culture for Mexico’s Indigenous Yaqui
- The sacred waters of the Yaqui tribe in the northwestern Mexican state of Sonora have dried up after decades of overexploitation, unequal water distribution and drought.
- This poses serious threats to Yaqui culture, which previously used certain sections of the Yaqui River for traditional ceremonies.
- It has also led to the decline of plant and tree species, such as the alamo (Ficus cotinifolia) and the giant reed (Arundo donax), which are used to build traditional structures in Yaqui villages.
- Important features of the Yaqui ritual dance, known as the pascola and deer, rely on the cocoons of the four-mirror butterfly, an endemic species that depends on the Yaqui River for its survival and is in decline.
Study to benchmark water quality finds key Amazon tributary in good shape
- Researchers have found that water quality in Brazil’s Negro River, the second-largest tributary of the Amazon, remains largely excellent, the result of a sparse human presence and strong conservation measures.
- The sampling of 50 sites along the main stream of the blackwater river was carried out to develop a water quality index (WQI) for this type of Amazonian river, which hasn’t been done before.
- In August, the research group will present this new WQI to the Amazonas state water resources council; if approved, the index will be used as the model for monitoring blackwater rivers in the state.
- The project on the Negro is the first of the program, which aims to develop a WQI for each of the largest rivers in Amazonas state, such as the Madeira, Solimões and Purus, and establish continuous monitoring during the wet and dry seasons.
Cambodia’s Funan Techo Canal project: A catalog of worries (analysis)
- Cambodia plans to build a 180-km (110-mi) canal from its capital to its coast on the Gulf of Thailand, a $1.7 billion project aimed at reducing its dependence on moving cargo through ports in neighboring Vietnam.
- But this analysis concludes that the plan is financially unfeasible, would have severe environmental impacts, and would exacerbate water scarcity in a region already suffering from critically low levels in the Mekong.
- The Cambodian government’s argument that the canal would make freight transport cheaper falls apart under cursory calculations, which show shipping costs will be even higher than via the Vietnamese ports.
- This article is an analysis. The views expressed are those of the author, not necessarily of Mongabay.
As drought parches Mexico, a Yaqui water defender fights for a sacred river
- In the northwestern Mexican state of Sonora, Mario Luna Romero faces constant threats to his life for fighting to protect his community’s rights to its water in the region.
- Within the Yaqui Territory are the remnants of the Yaqui River, which is sacred to the Indigenous tribe and has been drained of all its water after decades of overexploitation, unequal water distribution and droughts. Mexico, including the Yaqui Valley, is experiencing a deadly heat wave, drought and water shortages.
- Luna was arrested in 2014 and spent a year and 11 days in a maximum-security prison; meanwhile, other colleagues have been harassed by government officials or killed by criminals.
- This 4-part series won for Best Coverage of Indigenous Communities as part of the 2025 Indigenous Media Awards.
Global migratory freshwater fish populations plummet by 81%: Report
- A new global study reveals an average 81% decline in migratory freshwater fish populations between 1970 and 2020.
- Habitat loss, degradation and overfishing are the main threats to migratory fish, which are crucial for food security, livelihoods and ecosystems worldwide.
- While 65% of species have declined, 31% have shown increases, suggesting that conservation efforts and management strategies can have positive impacts.
- The report calls for stronger monitoring efforts, protection of free-flowing rivers, and meeting global biodiversity goals to address this crisis.
Activists blame policy failures over climate change for Nepal Terai’s water crisis
- Deforestation and unregulated extraction of resources in the youngest and most fragile of the Himalayan ranges have disrupted groundwater recharge and increased soil erosion, contributing to the current water crisis.
- Activists criticize the government for blaming global climate change to deflect from local accountability and for neglecting Chure’s conservation while focusing on Himalayan snowmelt.
- Despite conservation efforts, government plans to export construction materials from Chure continue, risking further environmental damage and criminal influence.
‘Water grabs’ pose big threat to farmers amid water crises
- A new report by IPES-Food shows how investors and agribusiness are taking control of water in Latin America by purchasing rights to land or water to secure access and grow water-intensive crops, such as avocados.
- The researchers say such deals take water away from local farmers and communities and puts it in the hands of agribusiness and investors, creating a crisis for local farmers who already face water shortages.
- In Chile’s Petorca province, a combination of climate change and water acquisitions by large agribusiness has put a strain on an already overwhelmed water system, forcing many residents to leave or buy water at high prices.
- The financial advantages large companies have over smallholders also mean they’re more likely to secure water over farmers when there’s little left.
Photos: Exploring Mexico City’s Aztec-era farms, the chinampas
- Chinampas are part of an agricultural system developed during the Aztec Empire in shallow lakes or marshes in the southern valley of what is today Mexico City.
- The system consists of elevated, narrow platforms used as fields that are surrounded by water canals, and is considered one of the most intensive and productive farming systems ever developed.
- However, for decades, chinampas have faced increasing threats due to urbanization, the overexploitation of water resources, water contamination and unregulated tourism, as well as the growing rejection of chinampa culture by traditional farmers and the loss of ancestral knowledge.
If forests truly drive wind and water cycles, what does it mean for the climate?
- Theoretical physicists Anastassia Makarieva and Viktor Gorshkov developed the controversial “biotic pump” theory more than a decade ago, which challenges traditional climate and hydrological science.
- The theory posits that forests drive moisture-laden air currents, thereby governing wind and rain and implying that further global forest loss could have unknown effects on weather and water supplies.
- While yet to be disproven or validated, some scientists say it’s vitally important to study and test this theory, and potentially include it in climate-modeling scenarios.
- Makarieva joins Mongabay’s podcast to discuss the theory and its implications for future climate modeling with co-host Rachel Donald.
Ancient farming system and campesino livelihoods at risk in Mexico City
- In the south of Mexico City lies a complex lake and canal system dotted with raised agricultural fields known as chinampas, which have been cultivated by campesino farmers ever since the Aztec Empire.
- Chinampa culture is under threat in part due to environmental problems caused by urbanization, the overexploitation of water resources, irregular settlements and unregulated tourism.
- Over the years, greater numbers of the chinampas’ farmers, known as chinamperos, have left the fields to work in the city, an issue that has led to the abandonment of 16,000 chinampas, according to researchers.
- Those who remain face several challenges, such as water contamination and drought, with little government support.
Water is key as study shows restoration of drained tropical peat is possible
- Rewetting of tropical peatland that was drained for agriculture can lead to the recovery of the native ecosystem, a long-term study of a former pulpwood plantation in Indonesia shows.
- Researchers studying the 4,800-hectare (11,900-acre) plot that was retired in 2015 by Asia Pulp & Paper (APP) found the water table had risen, soil carbon emissions had gone down, and native trees were springing up and replacing the planted acacia pulpwoods.
- They attributed these outcomes to APP’s efforts to rewet the peat by blocking the canals previously dug to drain the waterlogged soil.
- The findings suggest that “several million” hectares of peatlands in similar condition can be restored this way, “should plantation owners aim to restore forest in parts or all of their peatlands.”
An ancestral solution ensures water for Peruvian alpaca farmers, but is it enough?
- A community of alpaca farmers in the high Peruvian Andes is witnessing the loss of its mountain glaciers as a result of a warming climate and unseasonal droughts.
- In response, community members have turned to an ancestral practice of harvesting rainwater runoff and snowmelt, caching it in artificial lagoons that they can then tap to irrigate their alpaca pastures.
- Today, the community of Santa Fe, on the slopes of Mount Rit’ipata, has 41 of these lagoons, or qocha, but increasingly prolonged droughts mean it will need many more.
- Other communities across Peru have launched similar water harvesting initiatives, and while the government backs these projects, communities like Santa Fe are ineligible for state funding under a 2022 regulation.
In a village divided, farmers stall massive copper mine in Colombian Andes
- A group of farmers and villagers are resisting the construction of a large copper mine in Colombia’s tropical Andes, where agriculture is a key industry; they recently blocked the company from completing environmental impact studies required by the Colombian government.
- International gold mining giant AngloGold Ashanti has been working for more than a decade to obtain a license to extract nearly 1.4 million metric tons of copper from within the mountains surrounding the town of Jericó.
- The company has also integrated into the town, supporting social programs, youth activities and local businesses; residents are divided over the mine, and many view it as a welcome social and economic boost for Jericó.
Yucatán Peninsula’s hidden underground life tracks changes at the surface
- Scientists from Northwestern University in the U.S. led a series of underwater expeditions collecting water samples from the deep web of caves and sinkholes in the Yucatán Peninsula.
- The southeastern region of Mexico is crisscrossed by numerous flooded and interconnected tunnels, functioning as subterranean rivers — crucial arteries that maintain ecosystems and support millions of people, and connecting directly to the sea.
- Any disruptions to the microbial communities in these waters could have significant consequences for both humans and marine ecosystems.
- This research is crucial for assessing the potential environmental impacts of large-scale agriculture or major projects like the building of the Tren Maya railway line.
In Brazil’s Cerrado, aquifers are losing more water than they can replace
- A new monitoring model combining satellite images with artificial intelligence can identify variations in the volume of Brazilian aquifers.
- The Urucuia, one of the largest aquifers in the Cerrado biome, saw its water volume decrease by 31 cubic kilometers (7.43 cubic miles) over two decades; most of it is in western Bahia, where monoculture plantations are gaining ground.
- According to researchers, Brazil’s groundwaters—which cover 2.84 million square kilometers (1 million square miles) — remain “an unknown resource,” and few tools exist to monitor them.
Will the Mekong and Salween pay the price of China’s energy transition?
- Proposals by some of the world’s largest greenhouse gas emitters to transition their energy sectors away from fossil fuels and toward renewables have generally been welcomed by the scientific community as progress in the right direction.
- However, while acknowledging the energy transition as essential, energy experts caution policymakers to also consider the unintended social and ecological consequences of scaling up renewable infrastructure, such as large-scale hydropower dams and wind and solar farms.
- A new study finds that China’s plans to decarbonize its energy sector by 2060 could have inadvertent but severe impacts on local farmland and transboundary river basins, including the regionally significant Mekong and Salween.
- The authors say that strategies to reduce electricity demand combined with increased investment in emerging energy technologies could curb the need for further hydropower expansion in the upper stretches of the pivotal rivers, thereby reducing cascading downstream impacts.
Beyond deforestation, oil palm estates pose flood and water contamination risks
- Clearing of forests for oil palm plantations can increase flooding risk and water contamination for downstream communities, a new study shows.
- The research focused on the Kais River watershed in Indonesian Papua, where about 10,000 hectares (25,000 acres) of forest have been clear for plantations as of 2021.
- For the Indigenous Kais community living downstream, this period has coincided with an increase in flooding and a decline in water quality.
- The raised flooding risk comes from the fact that oil palms aren’t nearly as effective as forest trees in slowing rainwater runoff, while the water contamination has been traced to the intensive use of agrochemicals on the plantations.
Banks backing Mekong hydropower failing on due diligence, report reveals
- A new report shows that major banks operating in Southeast Asia are failing to address the environmental and human rights consequences of their investments in large-scale hydropower dams along the Mekong River.
- The report from sustainable finance watchdogs reveals regulatory shortcomings at regional and national levels that it says fail to hold banks accountable for their investments.
- Riverside communities and rights groups have long questioned why banks operating in Mekong countries continue to fund environmentally damaging hydropower projects in neighboring countries, despite the high costs and consequences for communities in their own country.
- The report calls on financial institutions to adopt more sustainable banking policies and practices when deciding which projects to support.
An ancient Indigenous lagoon system brings water back to a dry town in Ecuador
- The town of Catacocha, located in the south of Ecuador, is in a province known for being almost a desert: dry forest, barren soil and rains that only appear two months in the year.
- A historian discovered the water collection system long ago used by Palta Indigenous people and persuaded locals in Catacocha to apply it.
- By building 250 artificial lagoons, the inhabitants of this region have succeeded in managing rainwater.
- The change that has happened in nine years is visible: They sowed 12,000 plant,s and UNESCO has included the area in its list of ecohydrology demonstration sites.
Indigenous communities along Argentina’s Río Chubut mobilize to conserve waterway
- A caravan of Indigenous Mapuche activists recently concluded an 847-km (526-mi) trek down Argentina’s Chubut River, meeting with communities along the way to raise awareness of the issues they face along the shared waterway.
- From each trawün, or gathering, they determined that Indigenous access to land and water is diminishing, that large-scale projects on their lands are going ahead without their prior informed consent, and that Mapuche communities need a unified stance toward state decisions.
- Huge swaths of land along the river have been bought up by private interests, including foreign millionaires, cutting off access for the Mapuche to the Chubut that they consider not just a physical resource but a spiritual entity.
- The Mapuche are also concerned about policy changes under Argentina’s new libertarian administration, which has already kicked off a massive deregulation spree and could lift a ban on open-pit mining in the region.
Rainwater reserves a tenuous lifeline for Sumatran community amid punishing dry season
- Kuala Selat village lies on the coast of Indragiri Hilir district on the Indonesian island of Sumatra.
- In the first half of the year, residents of the village arrange buckets and drums to collect rainwater to meet their daily needs.
- They will then stockpile water to last through the dry months from June-September, but a longer dry spell has led to an acute shortage of water.
- Residents say they believe the water crisis in the village was linked to bouts of diarrhea, and that many fled the village during an outbreak.
Beneath the surface, a toxic tide threatens Bangladesh’s water lifeline
- Despite widespread water access, millions in Bangladesh lack safe drinking water due to contamination by arsenic, salinity and heavy metals as unveiled by the nation’s first comprehensive report on groundwater quality assessment.
- Depletion of groundwater, driven by irrigation and exacerbated by climate change, intensifies contamination, particularly affecting coastal areas with saltwater intrusion and surpassing safe limits in certain regions.
- Freshwater pockets and deep aquifers provide temporary relief, but experts emphasize that long-term strategies are imperative to address the problem in coastal districts.
- The Bangladeshi government’s commitment to water issues is evident, but urgent global cooperation, improved infrastructure and data-driven solutions are essential for ensuring safe water access nationwide.
Global cobalt rush drives toxic toll near DRC mines
- A new report highlights the social and environmental harms from cobalt mining in the DRC, driven by surging global demand for clean energy minerals.
- Researchers investigated five mines supplying major electric vehicle manufacturers and linked them to water contamination, health impacts and human rights abuses.
- Despite efforts to mitigate pollution, ongoing incidents and failure to meet clean water provision standards demand urgent action from companies and regulators, co-authors RAID and AFREWATCH say.
Critics fear catastrophic energy crisis as AI is outsourced to Latin America
- AI use is surging astronomically around the globe, requiring vastly more energy to make AI-friendly semiconductor chips and causing a gigantic explosion in data center construction. So large and rapid is this expansion that Sam Altman, the boss of OpenAI, has warned that AI is driving humanity toward a “catastrophic energy crisis.”
- Altman’s solution is an audacious plan to spend up to $7 trillion to produce energy from nuclear fusion. But even if this investment, the biggest in all of history, occurred, its impact wouldn’t be felt until mid-century, and do little to end the energy and water crises triggered by AI manufacture and use, while having huge mining and toxic waste impacts.
- Data centers are mushrooming worldwide to meet AI demand, but particularly in Latin America, seen as strategically located by Big Tech. One of the largest data center hubs is in Querétaro, a Mexican state with high risk of intensifying climate change-induced drought. Farmers are already protesting their risk of losing water access.
- As Latin American protests rise over the environmental and social harm done by AI, activists and academics are calling for a halt to government rubber-stamping of approvals for new data centers, for a full assessment of AI life-cycle impacts, and for new regulations to curb the growing social harm caused by AI.
Irrawaddy dolphin death in Thailand’s Songkhla Lake underscores conservation needs
- As few as 14 critically endangered Irrawaddy dolphins remain in the world’s smallest freshwater population of the species, in southern Thailand’s Songkhla Lake.
- The recent death of one of the remaining few raised the alarm among cetacean specialists, who say more must be done to save the imperiled population.
- Teetering on the brink of extinction, the dolphins face a slew of threats from entanglement in fishing nets, depletion of fish populations, and deteriorating lake conditions due to increasing pressures from agriculture, industry and infrastructure development.
- Experts say a “once-in-a-lifetime” opportunity to reverse the dolphin’s trajectory of decline is on the horizon in the form of major funding for dolphin conservation linked to a road bridge megaproject, but they warn it will only be successful if government agencies can put aside their competing agendas.
Rising temperatures threaten the tiny animals responsible for groundwater quality
- A new study compared temperatures inside 12 caves around the world with their respective surfaces, showing that average annual temperatures in underground systems tend to mirror those of the surface, but with far less variation.
- The researchers also found that while some caves follow outdoor temperatures with little or no delay, others have temperatures that are very asynchronous with the surface, being at their warmest when the world outside is at its coldest, and vice versa.
- Scientists also detected the existence of daily thermal cycles in the deepest sections of some caves, suggesting that such cycles might mark the circadian rhythms of cave-adapted organisms.
- The results indicate that underground fauna — with many species ill-adapted to handle large temperature variations — might be at threat due to climate change, and that their extinction might risk the water quality of aquifers worldwide.
Projected Pantanal waterway threatens protected areas, may render navigation impossible
- Construction of a waterway on the Paraguay River could accelerate a dehydration process already underway in Brazil’s Pantanal, impacting priority conservation areas and quality of life in local communities.
- Licenses for new fluvial ports are already being issued along the river and a contract signed by the administration of President Luiz Inácio Lula da Silva makes way for dredging needed for barges loaded with ore and grains to pass.
- The Association for Tropical Biology and Conservation has published a resolution asking that the project not move forward because of the risks it poses to the Pantanal biome.
Brazilian youngsters discuss how they are tackling the climate emergency
- Affected by drought, pollution, high waters and floods, young people from different Brazilian states describe how climate change is impacting their routines and causing illness, malnutrition, displacement and school disruption.
- According to a UNICEF report, 2 billion children and adolescents in the world are exposed to risks arising from the climate emergency; in Brazil, there are 40 million affected children and adolescents — 60% of Brazilians under 18.
- According to experts, the climate crisis is a crisis of the rights of children and adolescents, as it affects everything from the right to decent housing and health care to education and food, leading to problems in child development and learning abilities.
Pollution poses big risks to global clean water supplies, study shows
- Nitrogen pollution could intensify global water scarcity threefold by 2050, scientists warn in a recently published paper. In addition, “newly emerging pollutants,” such as microplastics, heavy metals, pathogens and pharmaceuticals, emitted into waterways could cause “severe water degradation in the future.”
- Modeling the escalating impact of nitrogen pollution on water quality, the scientists found that more than 3,000 river basins globally are at risk of water scarcity by 2050 in one future scenario. That finding comes along with concern that climate change could exacerbate water quality decline and increased scarcity.
- Nitrogen pollution and water contamination by heavy metals and pathogens have serious known public health consequences, while health impacts from microplastics and pharmaceuticals need far more research.
- The researchers suggest solutions that include curbing nitrogen pollution through better fertilizer management practices and improved wastewater treatment.
Fears of marine disaster loom after fertilizer-laden ship sinks in Red Sea
- The MV Rubymar, a cargo ship carrying about 21,000 metric tons of ammonium phosphate sulfate fertilizer, has sunk in the Red Sea following an attack by Yemen’s Houthi rebels, raising fears of an environmental disaster.
- In addition to the fertilizer potentially entering the ocean, the vessel is also leaking heavy fuel, which experts say will impact the marine environment.
- The Red Sea is known to harbor some of the world’s most heat-resistant coral reefs, which makes the sinking of the Rubymar particularly concerning.
Gharial conservation plan leaves Nepal fishing communities searching for new jobs
- Since the creation of Chitwan National Park, some Indigenous Bote people who have lost access to their ancestral lands and livelihoods have been employed by the park as gharial keepers to help conserve the critically endangered species.
- However, community members say the park’s restrictions on their fishing livelihoods to protect the reptile species is taking a toll on their economic needs and restricting their rights; the possibility of working as gharial keepers and other livelihood alternatives are insufficient, they say.
- Many parents are now encouraging their children to migrate to Persian Gulf countries to work as migrant laborers in order to lead a better material life.
- Conservationists say restricting fishing is an important step in protecting the species, which would struggle to survive if many economically dependent communities fished in the rivers.
Locals at the mouth of the Amazon River get a salty taste of climate change
- Ocean rise and changes in the Amazon River are ruining the way of life in an archipelago close to where the Amazon River runs into the Atlantic.
- In Bailique, locals are experiencing longer periods of salty water, a natural phenomenon that is becoming more usual due to climate change.
- Açaí berries, the prime economic drive of the community, are becoming saltier, and palm trees are being eaten by the erosion caused by changes in the Amazon River’s flow.
- Part of the population has already left the region, as others struggle to adapt to the new landscape.
Controversy brews over proposed dam on Kathmandu’s Bagmati River
- A proposed dam on Kathmandu’s Bagmati River aims to collect rainwater during the wet season and release it in the dry season to rejuvenate the river, but skeptics question its viability and safety.
- Concerns include environmental impact, potential destruction of trees, pollution and the risk of dam failure in earthquake-prone Nepal.
- Political, ecological and community-related questions remain unanswered, with some advocating for alternatives and further analysis before proceeding.
Hydropower in doubt as climate impacts Mekong Basin water availability
- Warmer and drier wet seasons in the upper basin of the Mekong River are affecting the availability of water for hydropower generation along the major watercourse, according to a new analysis.
- At a recent online discussion, regional experts questioned the viability of hydropower on the Mekong as a long-term, sustainable energy solution, given the increasing presence of climate risks.
- With large-scale dams in upper parts of the basin failing to fill their reservoirs, panelists at the event asked whether they are truly worth their documented impacts on downstream ecosystems, livelihoods and communities.
- Panelists recommended continued information sharing and improved coordination of dam operations to preserve the river’s crucial flood pulse that triggers the seasonal expansion of Tonle Sap Lake in Cambodia, and also highlighted the conservation importance of the Tonle Sap watershed, including tributaries in Cambodia’s Cardamom Mountains.
Andes community-led conservation curbs more páramo loss than state-protected area: Study
- In the central highlands of Ecuador, land managed by Indigenous peoples and local communities is associated with improved outcomes for drought adaptation and páramo conservation, according to a new study.
- The study finds that páramo areas managed by communities in this region are better protected than those under the care of the state.
- Due to the advance of the agricultural frontier in the highlands, approximately 4 hectares (9.9 acres) of páramo are lost every day, which threatens the water supply of the entire region.
- Community-led land management that incorporates inclusive participation, traditional knowledge and the cultural values of those who inhabit the areas, coined by reseachers as “social technology,” can aid in the conservation of the páramo.
Communities on troubled Java river mold future from plastic waste
- The Ciliwung is a highly polluted river running from Mount Pangrango in western Java, through the city of Bogor, before ending in the bay north of Jakarta, Indonesia’s capital.
- Since 2018, Bogor Mayor Bima Arya Sugiarto has overseen an initiative to rehabilitate the river, which was awash with plastics and dangerous levels of fecal coliform bacteria.
- Bogor is among more than 50 global cities participating in the Plastic Smart Cities, initiated by WWF to help eliminate plastics from nature.
Nepal’s gharial population rises, but threats to the crocs persist
- The population of critically endangered gharials in Chitwan National Park, Nepal’s stronghold for these crocodiles, increased by around 11% as of the start of 2024, totaling 265 individuals compared to 239 the previous year.
- While the increase is positive, a recently published study shows the critically endangered crocs are unevenly distributed throughout their range, with threats from fishing, changes in river flow, and infrastructure development deterring them from certain prime habitats.
- The study also flagged the low success rate of a raise-and-release program for captive-bred gharials: 404 gharials have been released under the program, but the overall population has increased by just 80.
- Juveniles released under the captive-breeding program are likely suffering high mortality rates in the wild or getting washed downstream to India; experts say a possible solution is to release them as far upstream as possible.
Java’s crumbling coastline and rising tide swamp jasmine flower trade
- Growers of jasmine flowers in lowland areas of Indonesia’s Central Java province are vulnerable to coastal erosion and rising sea levels.
- Research published in 2022 showed Central Java’s Semarang was among the fastest-sinking major cities in the world.
- Jasmine grower Sobirin has altered his home on three occasions since 2010, raising the floor to adapt to increasing tidal surges.
In Mexico, Xalapa’s chronic water scarcity reflects a deepening national crisis
- Residents of Xalapa, the capital of Veracruz, Mexico, have been struggling with a worsening water shortage that often leaves people without daily access to household water for washing.
- The problem is nationwide, in 30 of 32 states, forcing residents to purchase and recycle water and postpone bathing.
- Experts have blamed climate change and extreme heat for the country’s water shortages; others also blame corruption that allows companies to pay for unlimited water use.
- Deforestation for development, an increase in construction and building and population increases are also factors.
Courage & calm despite attacks: Q&A with Colombian activist Yuly Velásquez
- For years, Colombia’s largest oil refinery, owned by the national oil company Ecopetrol, has discharged oil and toxic waste into water bodies, impacting fish and the livelihoods of fishers.
- Yuly Velásquez, a local fisher and president of an environmental organization, has spent years documenting water contamination and corruption linked to the refinery, and she faces consistent threats and attacks.
- According to a 2022 report by the NGO Global Witness, Colombia is the most dangerous country in the world for environmental and land defenders, with 60 murders that year.
- In this interview with Mongabay, she discusses the threats environmental defenders face in Colombia and what helps her stay resilient in the face of attacks.
U.S. border wall threatens World Heritage status of Mexican reserve
- The U.S. border wall’s impacts on the flora, fauna and ecological connectivity of a biosphere reserve in Mexico could see the reserve included on UNESCO’s List of World Heritage in Danger.
- El Pinacate and Gran Desierto de Altar Biosphere Reserve abuts onto Cabeza Prieta National Wildlife Refuge in Arizona, but a section of border wall cuts across the boundary.
- The physical barrier has blocked access to water for wildlife on the Mexican side of the border because the natural springs they rely on are on the U.S. side, leading to the death of species like collared peccaries.
- “The fence doesn’t stop the migration of people, but it does stop the free passage of animals and is causing great damage to the biodiversity of the Sonoran desert,” said Alejandro Olivera, the representative in Mexico for the Center for Biological Diversity.
Why the Amazon’s small streams have a major impact on its grand rivers
- An unprecedented time-series study in the basin of the Tapajós River, a major tributary of the Amazon, assesses the level of degradation of small rivers threatened by agribusiness expansion.
- Researchers from several universities will assess the conservation status of 100 streams spread between the municipalities of Santarém and Paragominas, at the confluence of the Tapajós and the Amazon, which were first analyzed in 2010.
- The impact of dirt roads and their network of river crossings, which causes sediment load, siltation, erosion and changes in water quality, was one of the factors that caught researchers’ attention in the initial time-series study.
- Experts say that local development models should ideally start from water to land, rather than the other way around, given the importance of water for the rainforest, its biodiversity, and the inhabitants who depend on both.
The waters of the Xingu: A source of life at risk of death
- In Xingu Indigenous Park in the Brazilian Amazon, rivers and lakes are natural arteries that provide life for animals and Indigenous communities, serving as a base for eating, bathing, social interaction and refuge in times of drought.
- The waters of the Xingu, however, are threatened by monocrop plantations around the park, which dry up the springs and pollute the rivers with pesticides.
- At the same time, climate change is exacerbating the periods of drought, with some rivers drying up entirely during these times.
- In this photo essay, photographer Ricardo Teles shows the relationship that the Indigenous peoples of the Xingu have with the waters that bathe their territory.
Xingu waters: source of life at risk in the Brazilian Amazon
XINGU INDIGENOUS PARK, Brazil — Xingu Indigenous Park, located in the southern Brazilian Amazon, spans 26,400 square kilometers and is home to 16 Indigenous groups. These communities rely on the park’s rivers and lakes for food, social interaction, bathing, and as a refuge during droughts. However, the Xingu water basin faces significant threats from monoculture […]
Extreme drought in western Pará pushes family farmers into agroforestry
- Lost crops, reduced fish numbers, low water levels in rivers and difficult access to potable water have all led to a state of disaster declared in many municipalities in the state of Pará.
- Severe drought, the result of increasing climate changes and El Niño, is resulting in a more flammable Amazon rainforest. Farmers and technicians are seeking out more sustainable alternatives to the traditional slash-and-burn system.
- Agroforestry systems (AFS) and native honeybee apiculture cooperatives are increasing in the region.
Extreme drought in the Brazilian Amazon forces small farmers to look for alternatives
JURUTI, Pará — Since May 2023, the Amazon has faced below-average rainfall, leading to an unprecedented drought exacerbated by climate change and the El Niño phenomenon. In the western region of Pará, small-scale farming has been severely affected, a critical concern as agriculture occupies half of the land in this area. To combat these challenges, […]
With half its surface water area lost, an Amazonian state runs dry
- Water bodies across the Brazilian state of Roraima have shrunk in area by half over the past 20 years, according to research from the mapping collective MapBiomas.
- Today, locals are facing even drier times amid a severe drought in the Amazon, which has led to record-low levels of water in the rainforest’s main rivers.
- Since 1985, Roraima’s agricultural area has grown by more than 1,100%, with experts pointing to crops as one of the state’s main drivers of water loss.
Latest planned Amazon dam project threatens Indigenous lands, endemic species
- A study led by an Indigenous organization has found inconsistencies in the planning and licensing processes of the Castanheira hydroelectric project that it warns could alter the course of the Arinos River, one of the last still flowing freely in the Juruena River Basin.
- An area the size of 9,500 soccer fields would be flooded for the dam’s reservoir, affecting a region that’s home to Indigenous territories, small and medium-sized family farms, and the ancestral territory of the Tapayuna Indigenous people.
- The federal government has still not released a statement defining a timeline for the dam’s construction, even though feasibility studies began in 2010; the project is currently awaiting its environmental licensing.
Thailand tries nature-based water management to adapt to climate change
- With an economy largely underpinned by irrigated crops like rice, water is a crucial resource in Thailand. But as climate change exacerbates floods and droughts in the country, sustainable water management is an increasing challenge.
- Nature-based solutions that incorporate the natural processes of the country’s abundant rivers, floodplains and watershed forests are beginning to be trialed via various projects at large and small scales.
- A new report assesses the efficacy of two nature-based approaches to water management in Thailand, which represent a step away from the country’s typically top-down, hard-engineering approach and present several benefits to the environment and communities.
- However, environmental and societal tradeoffs, complex policy frameworks, and the need for greater understanding and expertise around the concept, design and implementation of nature-based approaches are barriers to their widespread implementation.
Salty wells and lost land: Climate and erosion take their toll in Sulawesi
- Coastal erosion on the west coast of Indonesia’s Sulawesi Island is so advanced that seawater has penetrated the groundwater supply that tens of thousands use for drinking water.
- The communities have yet to be served by utility water provision, so families are resorting to costly supplies of water from private distributors.
- Research shows that rising seas and more frequent and powerful storms will accelerate coastal abrasion, raising burdens shouldered by the world’s coastal communities.
Indigenous farmers’ hard work protects a Philippine hotspot, but goes overlooked
- A Pala’wan Indigenous community’s organic farming practices, using a mix of traditional, modern and agroforestry techniques, is successfully conserving old-growth forests and watersheds in the Mount Mantalingahan Protected Landscape, a biodiversity hotspot.
- However, the farmers face many challenges, including low profits, lack of access to markets, and nearby mining operations, and say they wouldn’t want their children to follow in their footsteps.
- Experts say the government should provide more incentives to these farmers who support conservation in a protected area in the form of direct subsidies, transportation and performance-based rewards for providing the ecosystem services that society depends on.
- Mantalingahan, also a candidate for a UNESCO World Heritage Site listing, is home to 11 out of the 12 forest formations found in the Philippines and hosts 33 watersheds.
New study pushes for protection of one of Africa’s ‘least understood treasures’
- A new study reveals the extent of a tropical water tower in Angola, which performs the same role as snow-capped mountains in the Northern Hemisphere.
- The Angolan Highlands Water Tower contains peatlands and freshwater lakes that supply major rivers in the region, and the wildlife-rich Okavango Delta in Botswana.
- Despite this vital hydrological role, the water tower currently has no formal protection.
- The team behind the study hopes it will help to strengthen the case for recognition of a vast portion of the water tower as a Ramsar Site of International Importance.
Colombian wind farm end-of-life raises circularity and Indigenous questions
- Jepírachi, Colombia’s first wind farm, is waiting to be dismantled after reaching its end of life, but the process itself and the project’s legacy remain uncertain.
- Across the world, first-generation wind projects are becoming obsolete, and disposing of the equipment, especially of the wind blades, is challenging circularity goals; currently, most blades are used in cement factories.
- Three Wayuu communities depend on the desalination plant created by the wind farm company for their clean water, but now the communities question the future of their water security.
Dam-building on Mekong poses risk to regional industries, report says
- A new report from WWF highlights how vital regional supply chains that rely on a healthy and connected Mekong River are undermined by hydropower development.
- Recent decades have seen scores of hydropower dams built on the Mekong River system, including 13 large-scale projects spanning the river’s mainstream channel, with hundreds more either planned or under construction.
- The report looks at how the economic value of hydropower in the Lower Mekong Basin measures up against its high economic trade-offs for five key sectors that underpin regional economies.
- The report provides recommendations for governments, investors and businesses to understand the true cost of hydropower and mitigate the inevitable risks they face over the decades to come.
Java farmers displaced by dam remain treading water after decades
- Farmers displaced by Indonesia’s Jatigede Dam have been forced to find new livelihoods or move to different regions of the archipelago.
- Many families were paid the equivalent of just 50 U.S. cents per square meter of land at the time, or 4.5 cents per square foot, as land acquisition accelerated in the 1980s.
- Indonesia’s second-largest dam is about to commence operation as a 110-megawatt hydroelectric plant, in addition to providing irrigation water for around 1 million farmers.
Deforestation continues in Kenya’s largest water capturing forest, satellites show
- New satellite data shows ongoing tree cover loss in Kenya’s largest water catchment, the Mau Forest, despite protection efforts.
- More than 19% of tree cover was lost between 2001 and 2022, mostly due to agriculture.
- Unclear boundaries and limited enforcement allow illegal logging and agricultural expansion to continue, degrading protected reserves.
- Conservationists argue stronger monitoring and enforcement is urgently needed to save Mau Forest and preserve its rich biodiversity and water resources.
The Cloud vs. drought: Water hog data centers threaten Latin America, critics say
- Droughts in Uruguay and Chile have led residents to question the wisdom of their governments allowing transnational internet technology companies to build water-hungry mega-data centers there.
- As servers process data, they need lot of water to keep them cool. But if demand grows as expected, the world will need 10-20 times more data centers by 2035, and they’ll be using far more water. Many will likely be built in economically and water-challenged nations already facing climate change-intensified droughts.
- Latin American communities fear that this “data colonialism” will consume water they desperately need for drinking and agriculture, and are critical of their governments for giving priority treatment to transnational tech giants like Google and Microsoft, while putting people’s access to a basic human necessity at risk.
- Surging digital data use by 2030 may cause each of us in the developed world to have a “digital doppelganger,” with our internet use consuming as much water as our physical bodies. But much of the stored data is “junk.” Critics urge that nations insist on tougher regulations for transnational companies, easing the crisis.
The Amazon’s archaeology of hope: Q&A with anthropologist Michael Heckenberger
- A professor at the University of Florida, Michael Heckenberger has been visiting and studying Indigenous peoples at the Upper Xingu River for decades and says the Amazon is already facing its tipping point: “It’s a tipping event.”
- In this interview for Mongabay, he tells how he and his colleagues have been practicing an “archeology of hope” — helping the Indigenous peoples in the region to prepare for climate change, using ancestral knowledge pulled out from archaeological research.
- “It should be the default, not the exception, to assume that there were Indigenous people living or dwelling in some way on almost every inch of Brazilian land,” he says about the marco temporal thesis, which aims to limit new Indigenous territories, now being discussed in Brazilian Congress.
Microplastics pose risk to ocean plankton, climate, other key Earth systems
- Trillions of microplastic particles in the ocean threaten marine life, from huge filter-feeders to tiny plankton. Although not lethal in the short term, the long-term impacts of microplastics on plankton and marine microbes could disrupt key Earth systems such as ocean carbon storage and nitrogen cycling.
- Oceans represent Earth’s largest natural carbon store and are crucial to mitigate atmospheric CO2 increase. Carbon taken up by plankton and stored in the deep ocean — known as the biological carbon pump — is a major process in ocean carbon storage. Microplastics may “clog” this pump and slow ocean carbon uptake.
- Microplastics in marine sediments alter microbial communities and disrupt nitrogen cycling, potentially magnifying human-caused problems like toxic algal blooms. Changes in plankton communities at the ocean surface could exacerbate deoxygenation driven by climate change, starving marine organisms of oxygen.
- Small plastic particles are impossible to remove from the oceans with current technology, so stopping pollution is a priority. Plastic production continues to soar year-on-year, but a U.N. treaty to address plastic pollution could offer a glimmer of hope that the international community is ready to take action.
Super flock of pigeons leaves Nepali researchers asking what happened
- Researchers in Nepal say they still don’t know what was behind a massive flock of some 7,500 woodpigeons observed in the country’s plains last December.
- A recently published study suggests a range of factors, from food availability to predator avoidance, combined to bring together the flock, which was 25 times larger than the biggest flock previously observed here.
- Climate factors may also have played a part, particularly the impact of heavy rains on the birds’ overwintering grounds in Pakistan.
- Researchers say more studies are needed to get to the bottom of the mystery, and plan to watch out for another super flock this coming winter.
Oil and gas exploration threatens Bolivian Chaco water supply
- Aguaragüe National Park is suffering from environmental damage caused by hydrocarbon exploration, the activities of which have been carried out for more than a century. In 2017, a study conducted by the Bolivian government and the European Union identified five high-risk environmental liabilities for the population, for which there is still no official information regarding remedial measures.
- There are at least 60 oil wells in this protected natural area, most of which are not closed, according to Jorge Campanini, a researcher at the Bolivian Documentation and Information Center (CEDIB).
- Per information from the Ministry of the Environment and Water, there are seven environmental liabilities and 94 oil wells in seven protected areas in Bolivia. No information was provided on the situation in the rest of the country.
A tale of two biomes as deforestation surges in Cerrado but wanes in Amazon
- Brazil has managed to bring down spiraling rates of deforestation in the Amazon Rainforest in the first half of this year, but the neighboring Cerrado savanna has seen a wave of environmental destruction during the same period.
- The country’s second largest biome, the Cerrado is seeing its highest deforestation figure since 2018; satellite data show 3,281 hectares (8,107 acres) per day have been cleared since the start of the year through Aug. 4.
- The leading causes of the rising deforestation rates in the Cerrado are a disparity in conservation efforts across Brazil’s biomes, an unsustainable economic model that prioritizes monocultures, and escalating levels of illegal native vegetation clearing.
- Given the importance of the Cerrado to replenish watersheds across the continent, its destruction would affect not just Brazil but South America too, experts warn, adding that the region’s water, food and energy security are at stake.
Tropical lakes are carbon super sinks, even more than forests, study shows
- Research shows that Amazonian water bodies capture 39% more carbon per unit area than the rainforest itself.
- The research also revealed that lakes and rivers located in tropical regions with preserved forests sequester 10% of the carbon in these locations.
- The study shows the importance of preserving wetlands against climate change, the researchers say.
Zika, dengue transmission expected to rise with climate change
- A new study foresees a 20% increase in cases of viruses like dengue, Zika and chikungunya over the next 30 years due to climate change.
- Higher temperatures are already causing the diseases carried by the Aedes aegypti mosquito to spread in cooler regions like southern Brazil and southern Europe.
- Deforestation also favors the spread of these illnesses because biodiversity-rich forests with more predators tend to inhibit mosquito populations.
- Brazil set a historic record in 2022, when more than 1,000 deaths resulting from the dengue virus were reported.
Rio de Janeiro’s defender of mangroves
- Guanabara Bay in Rio de Janeiro has suffered for decades from inefficient sewage treatment, oil spills and mangrove deforestation.
- For more than 30 years, biologist Mario Moscatelli has been fighting to reverse this process and revitalize the landscape.
- For denouncing corruption, environmental crimes and government inaction, he faced intimidation and even death threats.
The endless struggle to clean up Rio de Janeiro’s highly polluted Guanabara Bay
- Once a nursery for marine life, Guanabara Bay in Rio de Janeiro is now dying from the dumping of thousands of liters of sewage into its waters; artisanal fishers now survive by picking up the garbage that floats in the bay.
- Faced with failed promises of de-pollution by the government, civil society organized itself, creating areas of environmental protection and pressuring the companies responsible for basic sanitation in the state, which is still deficient today.
- On the shores of the Rodrigo de Freitas lagoon, a biologist started replanting the mangroves; life returned and the site has become a model of what can be done to save the Guanabara Bay.
Why should funding Amazon forest sustainability be the world’s top priority? (commentary)
- In this opinion piece, Jonah Wittkamper, Mariana Senna, and Ricardo Politi argue that donors should urgently scale up support for the development of an Amazon bioeconomy based around protecting the world’s largest rainforest.
- Without such intervention, there is a risk of the Amazon rainforest ecosystem collapsing, a development that would destabilize regional rainfall, unleash massive carbon emissions, and drive large-scale species extinction.
- “Jumpstarting the region’s bioeconomy could create a permanent solution by shifting local financial incentives away from deforestation,” they write. “Philanthropy for Amazon bioeconomy development could only be necessary for several years. Catalytic funding could enable the economies of forest protection and regeneration to outcompete the economies of deforestation,” the op-ed argues.
- This article is a commentary. The views expressed are those of the authors, not necessarily Mongabay.
Nepal’s rhinos are eating plastic waste, study finds
- A study found plastic waste in the dung of one-horned rhinos in Nepal’s Chitwan National Park, which could harm their health and survival.
- The plastic waste comes from the rivers that flood the park during monsoon season, as well as from visitors who litter the park.
- The study suggested that the government and its conservation partners should conduct clean-up programs and implement sustainable waste management plans to protect the rhinos, which are a vulnerable species.
Projects in Brazil’s Caatinga biome combine conservation and climate adaptation
- The Serra das Almas reserve in northeastern Brazil has benefited from sustained conservation measures that have turned cropland and pasture back into native Caatinga vegetation and allowed the return of wildlife.
- More than 800 animal and plant species are known to occur in the reserve, including the rare three-banded armadillo, a species that, until its sighting here last year, hadn’t been seen in Ceará state since 2008.
- The Caatinga Association, which owns and manages the Serra das Almas reserve, has encouraged the creation of more protected areas throughout the biome, providing support for 26 private reserves and three public conservation units, covering a combined 103,600 hectares (256,000 acres).
- Maintaining the Caatinga’s vegetation is crucial for securing water supplies for neighboring communities, and the association is supplementing that role in the face of a changing climate by providing water storage solutions to communities.
Sugarcane: The monoculture that transformed southern Quintana Roo
- The sugar cane area of the municipality of Othón P. Blanco reflects the results of decades of government policies that have privileged agriculture and livestock over jungles and forests.
- Starting in the 1970s, the federal government promoted sugar cane cultivation in the region. Although many sugar cane fields have been established since the ‘80s, this monoculture has continued to take over hectares inside and outside the sugar cane area. The sugar mill, to this day, marks life in the southern zone of Quintana Roo.
- In the entire municipality of Othón P. Blanco, since 2010, 75,364 hectares (186,228 acres) have been left without tree cover, equivalent to 109 times the area of the Chapultepec Forest located in Mexico City.
Award-winning community group in Sumatra cleans up lake
- A group of locals have since 2013 tried to clean up the trash pooling in Lake Sipin in the Sumatran province of Jambi.
- Their efforts have received national attention, with their leader, Leni Haini, awarded the country’s highest environmental award in 2022 by the government.
- Indonesia has announced a plan to restore 15 lakes (Sipin isn’t included) across the country by 2024, citing their high degree of degradation, chiefly sedimentation, which has resulted in their rapid shrinking and a decline in the biodiversity they host.
- These lakes are crucial in supporting the livelihoods of millions of Indonesians, serving as a source of freshwater, a form of flood control, and a site for fish-farming and tourism.
In Senegal, rice intensification helps farmers grow more with less
- To fight food insecurity and climate change, Senegal is increasingly employing a relatively new strategy for growing rice, known as the “system of rice intensification” (SRI).
- Developed in Madagascar in the 1960s, this method of growing rice intentionally stresses the plants, which allows the farmer to use less water, improves soil fertility, decreases methane emissions, and, most importantly, increases yields.
- Critics of the method say it’s more a list of principles than set rules, with some farmers also turning to herbicides to deal with weeding.
- Still, the method has been scientifically shown to provide numerous benefits for growing rice in drier climates.
Flooding for hydropower dams hits forest-reliant bats hard, study shows
- Researchers have found that bats specialized to feed on insects within the dense canopy of tropical forests are disproportionately affected by hydropower development.
- The study in Peninsular Malaysia adds to a growing body of evidence demonstrating how hydropower developments impoverish tropical ecosystems.
- Although forest-specialist bats were lost from the flooded landscape, bats that forage along forest edges and in open space were still present.
- To minimize localized extinctions, the researchers advocate a preventive rather than mitigative approach to hydropower planning that prioritizes habitat connectivity and avoids creating isolated forest patches.
As Shell, Eni quit Niger Delta, state-backed report describes legacy of carnage
- A new report commissioned by the governor of Bayelsa state in Nigeria said that over the course of 50 years, oil companies spilled 10-15 times as much oil as the Exxon Valdez disaster in the small riverine state.
- Researchers also took blood and tissue samples from 1,600 people across Bayelsa and found that in some areas the concentration of lead and cadmium was as much as six times higher than the safe limit.
- Ninety percent of the oil spills in Bayelsa took place at facilities owned by just five oil companies: Shell, Eni, Chevron, Total and ExxonMobil.
- The report is the first to be produced with local government backing in Nigeria, and called for oil companies to create a $12 billion fund for cleanup and health services in Bayelsa.
For weary Niger Delta residents, shocking oil pollution report offers little hope
- A new report commissioned by the Bayelsa state government in Nigeria holds international oil companies like Shell, TotalEnergies, and ExxonMobil responsible for spilling at least 110,000 barrels of oil there over the past 50 years.
- Researchers found alarming levels of toxic chemicals in soil, water, and in the air. Blood and tissue samples taken from residents found elevated levels of heavy metals including lead, nickel and cadmium.
- The report calls for extensive cleanup and recovery efforts, as well as sweeping changes to oil industry regulations and the setup of a $12 billion fund for remediation, paid for by the oil companies.
- Activists and residents say they’re largely skeptical of any meaningful changes arising from the report, including the prospect of compelling oil majors to pay into a remediation fund.
On the border of Colombia and Venezuela, illegal gold mining unites armed forces
- On the border between Colombia and Venezuela, just a few kilometers from Colombia’s Guainía department, illegal mining shakes the region’s economy while devastating the environment. The absence of the government is obvious.
- According to witnesses and photographs, the areas around Yapacana Hill are full of improvised billiard halls, restaurants, ice cream shops, brothels, grocery stores, clinics and even nurseries; this is all occurring under the strict control of Colombia’s National Liberation Army and FARC dissidents.
- In a 2020 study, a Venezuelan organization called SOS Orinoco revealed the massive scale of the illegal mining in Yapacana: In that year, mining affected a total of 2,035 hectares (about 5,029 acres), an area equivalent to about 1,884 soccer fields that is visible in satellite images.
Dhaka faces manifold problems as water bodies diminish
- A study by the Bangladesh Institute of Planners, or BIP, says the capital has lost 36% of its water bodies since 2010.
- Dhaka city has experienced water scarcity during dry months, which puts a strain on firefighters as they battle large fire; during monsoon months, the city experiences regular waterlogging as water retention points fill up.
- The disappearance of water bodies has created multifaceted problems like rising water levels, airborne disease, and mosquito-related diseases.
- In 2000, the government passed the Natural Water Reservoir Conservation Act, which mandates that natural water bodies be kept intact.
‘It gives life’: Philippine tribe fights to save a sacred river from a dam
- Each year, members of the Dumagat-Remontado tribe gather at the Tinipak River to observe an Indigenous ritual to honor their supreme being and pray for healing and protection.
- This year, the rite had an additional intention: to ward off an impending dam project they fear will inundate the site of the ritual.
- The Kaliwa Dam, part of a program aimed at securing a clean water supply for the Manila metropolitan region, is already under construction and scheduled to go online in 2027.
- The project has faced resistance from civil society groups as well as many of the Dumagat-Remontado, who say they fear it will cause both environmental and cultural damage.
‘Chasing giants’: Q&A with megafish biologist and author Zeb Hogan
- Earth’s freshwater ecosystems are among the most at risk from human-induced threats including overfishing, dam building, pollution and climate change.
- But biologists know relatively little about the animals that live in the murky depths of our rivers and lakes, perhaps least of all about some of their largest inhabitants.
- In a new book, fish conservation biologist Zeb Hogan teams up with journalist Stefan Lovgren to get to the bottom of a curious question: What is the world’s largest freshwater fish?
- An exploration of the world’s freshwater ecosystems from Australia to the Amazon, “Chasing Giants” also looks into the range of threats giant fish face the world over and what scientists, policymakers and the public can do to support their conservation.
Sri Lanka aims to restore ancient irrigation tanks in climate change plan
- Sri Lanka’s well-recognized village tank cascade systems, ancient irrigation structures that interconnect small tanks for rainwater-reliant cultivation, are a remarkable adaptation and mitigation strategy practiced on the island for dealing with extreme climatic conditions.
- Some of the tank cascade systems are likely to have been built around 500 BCE and continue to function sustainably, though not at full capacity; experts are calling for their restoration with extreme care to ensure optimum functionality.
- Recognized as a globally important agricultural heritage system by the U.N. Food and Agriculture Organization (FAO), most of these tanks are now neglected and under pressure from the changing climate, land use, population and agricultural intensification, despite their value as a unique climate adaptation plan.
- Sri Lanka’s dry zone has more than 14,000 small ancient village tanks with many still in good shape, supporting 246,000 hectares (608,000 acres) of paddy cultivation, about 39% of the total irrigable area, but poor maintenance has rendered many others dysfunctional.
Drying wetlands and drought threaten water supplies in Kenya’s Kiambu County
- Prolonged drought in Kenya has caused a water crisis, threatening local livelihoods and biodiversity; one of the badly affected areas is Kiambu County, a region normally known for its high agricultural productivity.
- Human activities such as dumping, encroachment and overgrazing coupled with dire effects of climate change exacerbate the degradation of wetlands, worsening the water crisis.
- Scientists say that conservation efforts must center around local communities to ensure the restoration of natural resources and combat the impacts of climate change.
Chile communities defy the desert by capturing increasingly scarce water
- The inhabitants of a rural community on the expanding frontier of Chile’s Atacama Desert are able to harvest around 500,000 liters (132,000 gallons) of water per year, thanks to fog nets installed 17 years ago.
- This water has allowed them to revive their mountain region’s vegetation and launch new businesses to improve their quality of life and adapt to drought.
- Other initiatives in the region, aimed at making the most use of the less frequent rains, help retain water for livestock and prevent soil erosion and mudslides.
- But these initiatives are pilot projects, with no funding or political support to sustain them over the long term, which the community says are what are needed the most.
In Brazil, scientists fight an uphill battle to restore the disappearing Cerrado savanna
- Countries around the world have made ambitious targets to restore native ecosystems as an important nature-based solution, with Brazil committing to restoring 12 million hectares (30 million acres) of native vegetation by 2030.
- While restoration in places like the Amazon has attracted significant funding and resources, non-forested biomes like Brazil’s Cerrado savanna are struggling to attract the same resources, even as it faces some of the highest deforestation rates in years.
- Researchers working on Cerrado restoration are trying to change this, fighting an uphill battle to generate knowledge, strengthen expertise, and scale up restoration.
- But without more resources and focus on national and international policies, they warn that restoration efforts in the Cerrado won’t come close to reaching their targets.
At the U.N. Water Conference, food security needs to take center stage (commentary)
- This week at the United Nations Water Conference, the growing level of global food insecurity from a lack of water should be addressed.
- “We urgently need a worldwide evaluation of water-related food risks that offers immediate and practical solutions,” a new op-ed argues.
- This post is a commentary. The views expressed are those of the authors, not necessarily of Mongabay.
A freshwater giant is a boon to Bolivian fishers, but an unknown for native species
- Paiche or arapaima (Arapaima gigas) was introduced in Bolivia in 1976 by accident from Peru, and though initially rejected as an exotic species, is today prized by local fishers as a boon to the economy.
- There’s no research on the potential damage caused to riverine ecosystems in the Bolivian Amazon region due to the arrival of paiche, but native fish species have disappeared in some areas where the freshwater giants thrive.
- The Bolivian government has not classified paiche as an invasive species, with some official studies recommending controlling rather than eradicating its population.
- Paiche fishing has also been encouraged as an economic boon to rural communities, where the species accounts for up to 70% of fishers’ catch.
‘During droughts, pivot to agroecology’: Q&A with soil expert at the World Agroforestry Centre
- As the unabating drought in Kenya persists, pastoralists in the region are struggling as millions of their livestock perish and vast swaths of crops die. About 4.4 million people in the country are food insecure.
- International food agencies are calling it a dire humanitarian situation and highlight the vital need to build communities’ resilience to adapt and cope with drought.
- Mongabay speaks with David Leilei, a Kenyan soil biologist at the World Agroforestry Centre, on the agroecological techniques and strategies pastoralists and the government can use to restore healthy soils to promote productive farming.
- Mary Njenga, a research scientist at the World Agroforestry Centre who works with 1,200 households in northern Kenya, also speaks with Mongabay on climate-resilient strategies.
Herders turn to fishing in the desert amid severe drought, putting pressure on fish population
- As Northern Kenya’s unabating drought continues, a growing wave of pastoralists are finding it challenging to keep their livestock alive and are switching to fishing in Lake Turkana, the world’s largest desert lake.
- However, environmentalists, fishing authorities, and some fishers worry that potential overfishing and increased pressures on fish populations will cause a collapse in fish stocks and the lake’s ecosystem.
- Authorities are also concerned about the rampant use of illegal fishing gear, such as thin mesh nets that catch undersized fish in shallow breeding zones, and an illegal tilapia smuggling network draining the lake by the tons.
- Though no studies have yet been done to assess fish populations, some environmentalists and fishers are calling for better enforcement of regulations to keep livelihoods afloat.
Forest modeling misses the water for the carbon: Q&A with Antonio Nobre & Anastassia Makarieva
- An expanded understanding of forests’ role in moisture transport and heat regulation raises the stakes on the health of the Amazon Rainforest and the need to stop cutting trees.
- The biotic pump theory, conceived by scientists Anastassia Makarieva and the late Victor Gorshkov, suggests that forests’ impact on hydrology and cooling exceeds the role of carbon embodied in trees.
- In an interview with Mongabay, Makarieva and Brazilian scientist Antonio Nobre explain how the theory makes the case for a more urgent approach by Brazilian President Luiz Inácio Lula da Silva to protect the Amazon.
Reciprocal Water Agreements protect millions of hectares of Bolivian forest
- In return for committing to protect their water producing forests, farming families living in upper watersheds receive incentives to help them develop sustainable production initiatives and to connect their homes to drinking water.
- These incentives are mainly funded by the municipality and from water service providers via a monthly payment made by service users.
- The model has expanded rapidly in Bolivia and is beginning to be replicated in Colombia, Peru, Ecuador and Mexico.
Locals fight to save ‘a piece of the sea’ in Venezuela’s Andes
- Urao is the only brackish continental lagoon in Latin America, significant for its minerals and the livelihoods it supports, but threatened by encroaching development in the Venezuelan state of Mérida.
- Fundalaguna, an Indigenous- and community-led NGO, has since 2016 worked to restore the shrinking lagoon by getting it designated as a Ramsar wetland, which would bring some measure of international protection.
- As part of its advocacy, the NGO holds eco talks at local schools to educate young people about the importance of saving the lagoon.
- At the same time, reforestation efforts and two very rainy years have saved the lagoon for the moment and brought back fish and migratory birds, but advocates say further hydrological works are needed to bring Urao back to its original state.
In Brazil’s Amazon, land grabbers scramble to claim disputed Indigenous reserve
- The Apyterewa Indigenous Territory has been under federal protection since 2007, but in recent years has become one of the most deforested reserves in Brazil, as loggers, ranchers and miners have invaded and razed swaths of forest.
- As President Jair Bolsonaro prepares to leave office, land grabbers are rushing to “deforest while there is still time,” advocates say, with forest clearing in Apyterewa on track to hit new highs this year.
- The surge in invasions has aggravated a decades-long tussle for land between Indigenous people and settlers, who first started trickling into Apyterewa in the 1980s and have since built villages, schools and churches within the reserve.
- The Parakanã people say the outsiders, new and old, are polluting their water sources, depleting forest resources, and threatening their traditional way of life.
Shadows of oil in Peru: Shipibo people denounce damage, contamination left by company
- Community members guided a team of journalists to the creeks and land of Canaán de Cachiyacu and Nuevo Sucre, in the district of Contamana in Peru’s Loreto region, to demonstrate how they have been affected by the various spills attributed to the Maple Gas oil company for over 25 years.
- Shipibo community members say that due to contaminated water, they still suffer from illnesses and their farms no longer produce crops. The contract established that the company must comply with environmental protection laws, but Perupetro confirmed that it simply abandoned its operations.
- Mongabay Latam traveled to two Indigenous communities on the banks of the Ucayali River and listened to the concerns of their residents regarding the serious environmental impact that they claim was caused by the operations in Block 31-B and Block 31-E.
Threatened cloud forests key to billions of dollars worth of hydropower: Report
- Payments for the provision of water by cloud forests for hydropower could produce income for countries and bolster the case for the forests’ protection, a new report reveals.
- These fog-laden forests occur on tropical mountains, with about 90% found in just 25 countries.
- Cloud forests are threatened by climate change, agricultural expansion, logging and charcoal production, and studies have shown that the quality and quantity of water that these forests generate is tied to keeping them healthy.
Indigenous youths lured by the illegal mines destroying their Amazon homeland
- An increasing number of young Indigenous people in Brazil’s Yanomami Indigenous Territory are leaving their communities behind and turning to illegal gold mining, lured by the promise of small fortunes and a new lifestyle.
- Work in the mining camps ranges from digging and removing tree roots to operating as boat pilots ferrying gold, supplies and miners to and from the camps; recruits receive nearly $1,000 per boat trip.
- The structures, traditions and health of Indigenous societies are torn apart by the proximity of the gold miners, and the outflow of the young generation further fuels this vicious cycle, say Indigenous leaders.
- Amid the COVID-19 pandemic and a lack of authorities monitoring the area, illegal mining in the region has increased drastically, with 20,000 miners now operating illegally in the territory.
About 72% of gold miners poisoned with mercury at artisanal mining sites in Cameroon
- A recent study reveals that 71.7% of miners at artisanal gold mining sites in Cameroon show mercury levels at concentrations above the limit recommended by the World Health Organization (WHO).
- Mercury use in artisanal mining has nevertheless been banned by the Cameroonian government since 2019 as hundreds of deaths occur yearly at mining sites.
- These fatalities result from gold mining’s uncontrolled development in Cameroon, where companies are continuously in conflict with communities and where national mining legislation has yet to come into force.
Will shipping noise nudge Africa’s only penguin toward extinction?
- The African penguin (Spheniscus demersus) is expected to go extinct in the wild in just over a decade, largely due to a lack of sardines, their main food.
- A colony in South Africa’s busy Algoa Bay is suffering a population crash that researchers say coincides with the introduction of ship-to-ship refueling services that have made the bay one of the noisiest in the world.
- They say theirs is the first study showing a correlation between underwater noise pollution and a seabird collapse.
- Current studies are investigating whether the ship noise is interfering with the penguins’ foraging behavior and their ability to find fish.
Ahead of polls, Nepal’s political parties, voters take heed of climate impacts
- Climate change will be high on the agenda for voters and political parties alike when Nepal holds its general elections on Nov. 20.
- A recent spate of disasters, from a dengue fever outbreak to flooding, have highlighted the country’s vulnerability to climate change.
- Both the ruling party and the main opposition have for the first time addressed climate change and the related issues of climate change, environment and disaster management in their campaign platforms.
- On the frontline of the impacts, however, citizens are skeptical of getting the help they need, while local authorities say any lofty plans will be undermined by a lack of funds
Sulawesi nickel plant coats nearby homes in toxic dust
- The Bantaeng Industrial Estate is a 3,000-hectare ore processing zone in Indonesia’s South Sulawesi province.
- President Joko Widodo has banned exports of raw mineral ores to compel companies to construct smelters to produce value-added nickel.
- But South Sulawesi communities living alongside the smelters report health impacts from pollution generated on site. Relocation plans have yet to be enacted.
Dam construction ignites Indigenous youth movement in southern Chile
- Dam construction on the Bío Bío watershed has plagued Indigenous Mapuche-Pehuenche communities in south-central Chile for decades, with many families having to relocate due to flooding of ancestral lands.
- The 90-megawatt Rucalhue hydropower plant, located near the town of Santa Bárbara, is the latest project causing controversy among local communities, who say they’re sick of battling infrastructure projects that disrespect their culture and traditions.
- Young people have been particularly outspoken against the project, staging sit-ins at the work site, sending petitions to government agencies, and helping organize a local plebiscite.
- Hydropower plants, while less polluting than many other forms of energy generation, still require the clearing of trees and the disrupting of river flows, which can have a significant impact on surrounding ecosystems.
Breeding success raises hopes for future of endangered African penguin
- Two African penguin chicks have hatched at a nature reserve in South Africa where conservationists have been working for years to entice the endangered birds to breed.
- The colony was abandoned more than 10 years ago after a caracal killed a number of penguins.
- The recent hatching comes at a time when survival prospects for Africa’s only resident penguin species look grim, due mainly to declining food stocks.
- But encouraging new colonies at sites close to abundant food sources could help to bring the species back from the brink.
Mercury rising: Why Bolivia remains South America’s hub for the toxic trade
- Bolivia is one of the few countries in South America yet to ban the import of the toxic chemical mercury, facilitating its use in illegal mining throughout the region.
- An October U.N. report highlighted Bolivia’s high rate of mercury imports and the need to regulate the distribution and use of the chemical, which has polluted entire watersheds in the country and poisoned animals and Indigenous communities alike.
- Some Bolivian government officials have called for a ban on the import of mercury and better controls on mining operations, many of which run without permits or government oversight.
Avocado farming is threatening Colombia’s natural water factory
- To satisfy the world’s ever-increasing appetite for the popular fruit, Colombia is risking the páramo, one of its key ecosystems.
- These rare environments provide fresh water to tens of millions of people — the majority of the Colombian population.
- The country is now second to Mexico as the world’s top avocado producer, with a significant uptick in production in the last year, resulting in socioeconomic and environmental impacts for communities downstream.
East Africa should promote renewable energy, not oil pipelines (commentary)
- The East African Crude Oil Pipeline (EACOP) is a planned 1,443 km pipeline that is expected to be built between oil fields in western Uganda to the port of Tanga in Tanzania.
- Despite likely negative effects on wildlife, forests, rivers, and the climate, EACOP proponents say the project will benefit the regions’ people: do these arguments hold water? A new op-ed says no.
- “Traditionally, and as recognized by President Museveni, Africans have lived in harmony with nature. They should continue to do so by championing renewable energy over risky projects such as the EACOP,” the writer argues.
- This post is a commentary. The views expressed are those of the author, not necessarily Mongabay.
For water quality, even a sliver of riverbank forest is better than none
- Costa Rica currently has laws in place to protect riparian zones along waterways, but they are unevenly enforced.
- Implementing these laws, even at the bare minimum of maintaining a 10-meter (33-foot) strip of riverbank vegetation, could lead to benefits for water quality and people, according to a new modeling study.
- The study shows that a small increase in forest cover around waterways can reduce nutrient and sediment runoff, especially on steeper lands and near farms and cities.
- Increases in water quality from riparian zones would improve drinking water for vulnerable populations in Costa Rica.
Science that saves free-flowing rivers & rich biodiversity
- Rapid biological surveys are a well-known way to establish the richness of an ecosystem and advocate for its conservation.
- A corps of scientists and conservationists has used such surveys to prove that the rush to build thousands of new hydroelectric dams in southern Europe threatens to drown a rich heritage, with impressive results.
- A proposal to dam one of the last free-flowing rivers in Europe was halted on the basis of one such survey, in addition to much conventional activism, and the group has since turned its focus to other threatened rivers in the region.
- "It might be the highest density of trout species on Earth," podcast guest Ulrich Eichelmann says of these rivers, which also host a wealth of bugs, bats, birds and beauty — plus a deep cultural heritage.
On the roof of the world, water is life. Or a sign of it, thanks to eDNA
- A first-of-its-kind expedition in 2019 attempted to map the biodiversity on Mount Everest by using environmental DNA, or eDNA.
- With eDNA, the team was able to detect species that would have been hard to observe visually.
- The findings aim to serve as baseline data for future expeditions that study how climate change is reshaping life on the world’s highest peak.
“Largest of its kind” dam in Cameroon faces backlash from unimpressed fishmongers
- Cameroon is constructing a new 420-megawatt capacity hydroelectric dam in Batchenga, aiming to reduce the country’s significant energy deficit by 30%.
- The massive dam project is impacting several villages where fishing is an essential part of the local economy. Several professional bodies, including fishmongers, fishermen and restaurant owners, have lost their livelihoods due to the dam’s construction.
- Fishmongers in one nearby village, Ndji, are becoming increasingly desperate for proper compensation as the amounts paid by the Nachtigal Hydro Power Company is not enough to make ends meet, they say.
- Civil society organizations are also accusing Nachtigal of seriously violating environmental standards during dam construction, despite the company continuously receiving environmental compliance certificates by the government.
Putting a price on water: Can commodification resolve a world water crisis?
- In 2018, a trader listed water on the Chicago Mercantile Exchange and then in 2020 introduced a futures market so consumers can factor the cost of water into their investment plans. After a slow start, traders expect the market to grow more strongly in 2023.
- Some analysts see this as a positive step, allowing market adjustments to provide consumers with the cheapest and most efficient way of buying water. Others disagree, saying that water, like air, should not be commodified as it is a fundamental human right and must be available to all.
- Critics fear that creating a water market is a first step toward a future in which just a few companies will be able to charge market rents for what should be a free natural resource. Huge questions remain over water allocations for industry, agribusiness and smallholders, cities, and traditional and Indigenous peoples.
- The clash between these economic and socioenvironmental worldviews isn’t just occurring internationally. The conflict over water regulation is evident in many nations, including Brazil, which lays claim to the world’s biggest supply of freshwater, and Chile, currently suffering from its most severe drought ever.
Haiti: An island nation whose environmental troubles only begin with water
- As Haiti plunges into the worst social unrest the nation has seen in years, shortages abound. One of these is water. But in Haiti, water scarcity has deeper roots, that connect to virtually every other aspect of the environment. Haiti’s ecosystems today, say some, are under stress due to regional and global transgressions of the nine planetary boundaries.
- The planetary boundary framework originated in 2009 to define required limits on human activities to prevent collapse of vital Earth operating systems. They include biodiversity loss, freshwater, air pollution, climate change, high phosphorus and nitrogen levels, ocean acidity, land use changes, ozone layer decay, and contamination by human-made chemicals.
- Scientists defining the global freshwater boundary warn that tampering with the water cycle can affect the other boundaries. Haiti, as a small isolated island nation, suggests a laboratory case-study of these many interconnections, and offers a graphic example of the grim results for humanity and wildlife when freshwater systems are deeply compromised.
- Haiti today is plagued by an extreme socioeconomic and environmental crisis. As it fights climate change, freshwater problems, deforestation and pollution, it may also be viewed as a bleak bellwether for other nations as our planetary crisis deepens. But scientists warn that research on applying planetary boundary criteria on a regional level remains limited.
Guatemalans strongly reject mining project in local referendum
- Nearly 88% of participating residents voted against metallic mining in a municipal referendum in Asunción Mita, in southeastern Guatemala.
- Locals fear the Cerro Blanco gold mining project would pollute soil and water sources, affecting the health of residents and crops.
- There is also strong opposition in nearby El Salvador to the mine as it is located near a tributary of the Lempa River that provides water for millions of Salvadorans.
- Cerro Blanco owner Bluestone Resources, the Guatemalan Ministry of Energy and Mines and a local pro-mining group contest the legality of the referendum.
Humans are dosing Earth’s waterways with medicines. It isn’t healthy.
- Medicines, chemical formulations that alleviate much human suffering, can also be significant pollutants, with active ingredients often excreted from the human body and entering waterways. However, the intensity of this contamination and of its impacts has not been well researched.
- A study published in June analyzed samples from 1,000 sites along waterways in more than 100 nations, looking for 61 active pharmaceutical ingredients (APIs). Their results suggest that concentrations of at least one API breached safe levels for aquatic life at nearly 40% of sites tested globally.
- Some pharmaceuticals are endocrine disruptors (EDCs), which mimic hormones and interfere harmfully with the endocrine system in various organisms, while other drugs are linked to antimicrobial resistance (AMR), considered one of the biggest threats to human health and well-being today.
- Despite growing awareness among scientists, there is no systematic reporting of waterway pollution by medicines, or impacts on ecological health. Currently, many human-excreted pharmaceuticals enter directly into waterways, or pass through existing wastewater treatment facilities. Fixing the problem will be very expensive.
Latest water-sharing deal between Bangladesh, India is ‘drop in the ocean’
- Bangladesh and India share 54 rivers that flow down from the Himalayas to the Bay of Bengal, chief among them the Ganges and the Brahmaputra.
- Managing the flow of water both upstream and down is crucial for agriculture, navigation, inland fisheries, and keeping saltwater intrusion at bay in Bangladesh, but is undermined by a lack of water-sharing agreements.
- The Bangladeshi and Indian prime ministers recently signed an agreement on sharing water from the Kushiara River for irrigation, but experts say this is nothing special in the grand scheme of things.
- They’ve called on the governments of both countries to push for securing long-term treaties on water sharing from major rivers like the Ganges and the Teesta, which in the latter case has been hobbled by local politics in India.
On the frontlines of drought, communities in Mexico strive to save every drop of water
- Sixteen Indigenous Zapotec communities in Mexico have created over 579 water infrastructure projects, including absorption wells, small dams and water pans, to conserve water in the Oaxaca Valley – a region impacted by recurrent droughts.
- Significant success in harvesting water has been realized, however, farmers still struggle to have enough water due to lack of rain – making water conservation efforts largely fall to dust.
- Last year, the Mexican government recognized their efforts and gave communities a concession to manage water resources locally. Communities are still waiting to know when they will officially receive the concession.
- Just a few women hold leadership positions in these communities, including Josefina, Esperanza and María. They have been involved in water conservation projects since a severe drought hit the region 17 years ago and hope to enhance gender equality in the region.
Poverty-fueled deforestation threatens Kenya’s largest water catchment
- Mau Forest is East Africa’s largest native montane forest and Kenya’s largest water catchment.
- Olpusimoru Forest Reserve is one of Mau Forest’s protected areas, but its forest cover has been greatly reduced by logging, fuelwood collection and other poverty-driven human pressures.
- Beginning in 2018, thousands of families that had established themselves inside the forest reserve’s boundaries were evicted by the Ministry of Environment and Forestry, part of a wider push that saw more than 30,000 people evicted from the broader Mau Forest Complex.
- Despite government intervention and civil society initiatives to assuage poverty in the region, signs of fresh logging, charcoal burning and overgrazing are evident in Olpusimoru Forest Reserve.
As their land and water turns saline, Kenyan communities take on salt firms
- Between 1977 and the 1990s, the Kenyan government allocated thousands of hectares of land to salt mining companies along the country’s north coast.
- People had been living on that land for generations, despite its being officially gazetted as public land by the government.
- Following the allocation of land, local people have complained of harassment and violent evictions by the salt companies, as well as soil and waters rendered too salty to farm, drink, or fish.
- In 2020 groups representing these communities filed a lawsuit against the companies and government that consolidates many complaints and aims to provide recourse for loss of land and livelihoods and damage to the environment. The case is due before a judge in October.
FSC-certified paper plantation faces farmer backlash in Colombia
- Smurfit Kappa Cartón de Colombia (SKCC), a paper company with multiple plantations certified by the FSC ethical wood label, is facing backlash from Indigenous and local farmers over land disputes and environmental impacts.
- Mongabay was able to confirm three cases of plantations violating Colombia’s legal forest code. Communities living close to the company’s paper plantations say they are to blame for water shortages and a decrease in biodiversity and soil fertility.
- There is little agreement over the effects of these plantations on water availability, but many activists and academics say agroforestry or silvopasture systems can be alternative solutions to increase biodiversity and contribute to farmers’ livelihoods.
- A SKCC forestry division manager said SKCC carries out rigorous legal and background analyzes of the properties to operate according to the law and practices respect for the environment.
Drought-beset South African city taps aquifer, shirks long-term solutions: Critics
- A major coastal city located in South Africa’s Eastern Cape province is facing a total water cutoff for about 500,000 residents, almost half its population, following a prolonged drought.
- Disaster relief hydrologists have begun drilling boreholes to access groundwater so that hospitals and schools can stay open during the emergency in Nelson Mandela Bay Metropolitan Municipality.
- But critics say the city administration has failed to develop a long-term plan to support water harvesting from intermittent rains and construction of desalination plants.
- They also point out that overreliance on boreholes drilled near the sea could lead to saline water intrusion into the aquifer, contaminating groundwater and rendering borehole water undrinkable.
Lack of timely rains, fertilizer hits rice farmers in Nepal’s granary
- The annual monsoon rains have failed to arrive in Nepal as anticipated ahead of the rice-planting season, leaving farmers facing another season of loss and the country bracing for a food shortage.
- A senior government meteorologist says it’s still too early to link the lateness of the monsoon to climate change, but what’s certain is that climate change is already wreaking havoc with rainfall patterns in Nepal.
- Last year, a prolonged monsoon brought unexpected flash floods that cost farmers $93 million in damages.
- A decline in rice production this year could put Nepal’s already strained finances under even more pressure by forcing the country to import rice.
Water-stressed Bangladesh looks to recharge its fast-depleting aquifers
- Water management authorities in Bangladesh have drawn up a plan to recharge, or refill, the aquifers serving Dhaka and other areas, which are being depleted by one of the highest groundwater extraction rates in the world.
- The plan calls for injecting storm water, reclaimed water, desalinated water and potable water into the aquifers, which, in the case of Dhaka, is falling by up to 3 meters (nearly 10 feet) a year.
- The country withdraws an estimated 32 cubic kilometers (7.7 cubic miles) of groundwater annually, 90% of which is used for irrigation and the rest for domestic and industrial purposes.
- Even though four of South Asia’s largest rivers run through Bangladesh, the country struggles to provide sufficient drinking water for its inhabitants, in large part because of pollution.
Deforestation intensifies in northern Malaysia’s most important water catchment
- The Ulu Muda rainforest is one of the last large, continuous tracts of forest in the Malay Peninsula, providing vital habitat for countless species as well as water for millions of people in northern Malaysia.
- Satellite data indicate deforestation activities are intensifying in the greater Ulu Muda landscape, including in protected areas such as Ulu Muda Forest Reserve.
- Sources say the forest loss is likely due to legal logging.
- Conservationists worry that the loss of Ulu Muda rainforest will have detrimental impacts on the region’s biodiversity and water security, as well as contribute to global climate change.
‘Water always wins,’ so why are we fighting it?
- On this week’s episode of the Mongabay Newscast we examine humanity’s approach to harnessing water, and how the current “us-first” mindset is actually exacerbating our water access problems.
- Journalist and author Erica Gies joins us to discuss the concept of ‘slow’ solutions to water shortages presented in her new book "Water Always Wins: Thriving in an Age of Drought and Deluge," and how communities can work with water rather than against it.
- Gies discusses how hydrologists, engineers, and urban planners are creating 'slow' water projects with traditional hydrological knowledge, which are less invasive ways of harnessing water, in places such as Chennai, India.
On hazardous mine tailings dams, ‘safety first’ should be the rule (commentary)
- A mine tailings dam in Madagascar has failed at least twice this year, sending hazardous wastewater into a lagoon relied on by locals for drinking and subsistence fishing, and allegedly killing hundreds of fish.
- Activists say Rio Tinto refuses to accept responsibility for the fish or water pollution, and that this is not an isolated incident: tailings dams are failing with increasing frequency and severity all over the world.
- “Safety First” is a new set of guidelines toward more responsible tailings storage that prioritizes safety over cost, which companies and investors should heed, a new op-ed argues.
- This post is a commentary. The views expressed are those of the author, not necessarily Mongabay.
In Brazil’s semiarid region, agrivoltaics show promise for food, energy security
- Recent studies have shown that agrivoltaic systems, which combine solar power generation with food farming, can be a sustainable development strategy in water-stressed regions.
- A pilot project in Brazil’s semiarid northeast region consists of a series of solar panels, underneath which vegetables can be grown and fish and chickens raised, offering both food and energy security for users.
- If scaled up, agrivoltaics could also generate electricity for the whole of Brazil, according to the project’s proponents, while at the same time boosting food production and allowing for the restoration of degraded or desertified land.
- The pilot project of the system, known as Ecolume, has shown promising results, but there has been little interest among Brazilian policymakers to replicate it more widely or even promote it as a solution for food and energy production challenges.
Mennonite colony builds bridge, clears forest in Bolivian protected areas
- In 2018, a Mennonite colony purchased 14,400 hectares (35,500 acres) of land in the Bolivian department of Santa Cruz. Colonists have since built a bridge and developed a network of roads, and are in the process of clearing vast swaths of forest.
- The construction of the bridge appears to have been done without authorization from the government, and without an environmental impact assessment.
- Portions of the property lie within two protected areas: Kaa-Iya del Gran Chaco National Park and Integrated Management Natural Area, and the Bañados de Izozogy el río Parapetí wetland of international importance.
- Members of a local Indigenous community voiced support for the clearing activities, saying that the new roads and bridge will help connect them to medical facilities. However, scientists and conservationists are concerned about the impact of deforestation on water sources, wildlife and isolated Indigenous groups.
Nickel, Tesla and two decades of environmental activism: Q&A with leader Raphaël Mapou
- Nickel mining in New Caledonia, a French overseas territory in the south Pacific, is receiving international attention after the electrical vehicle giant Tesla recently invested in its largest mine, Goro.
- The mine has been plagued by environmental and social issues for the last decade. It is related to five chemical spills and Indigenous Kanak struggles for sovereignty over its resources.
- Raphaël Mapou is a Kanak leader who established the environmental organization Rhéébù Nùù in 2002 as a means to address concerns about the effects of mining at Goro.
- In an interview with Mongabay, Mapou talks about the legacy of Rhéébù Nùù and if a change of ownership at Goro, combined with Tesla’s investment, can deliver positive outcomes for surrounding communities.
All eyes on Tesla as it invests in a troubled nickel mine
- American manufacturing giant Tesla invested in New Caledonia’s Goro mine in 2021, raising local expectations that international scrutiny and the mine’s new owners could help the plant overcome past environmental mismanagement issues and social woes.
- Since 2010, there have been five recorded acid leaks at the Goro mine into nearby bays and reefs. The mine is also related to Indigenous Kanak struggles for sovereignty over its resources and violent protests in 2020.
- The mine was bought by Prony Resources, whose shares are largely owned by New Caledonian stakeholders, including local communities. Kanaks now see themselves as stakeholders and watchdogs in the mine’s production.
- Local organizations and researchers plan to keep a close eye on the environmental impacts of mining in New Caledonia, especially as Prony Resources proposes a new waste management process and China lays out its interests in the region.
Beyond boundaries: Earth’s water cycle is being bent to breaking point
- The hydrological cycle is a fundamental natural process for keeping Earth’s operating system intact. Humanity and civilization are intimately dependent on the water cycle, but we have manipulated it vastly and destructively, to suit our needs.
- We don’t yet know the full global implications of human modifications to the water cycle. We do know such changes could lead to huge shifts in Earth systems, threatening life as it exists. Researchers are asking where and how they can measure change to determine if the water cycle is being pushed to the breaking point.
- Recent research has indicated that modifications to aspects of the water cycle are now causing Earth system destabilization at a scale that modern civilization might not have ever faced. That is already playing out in extreme weather events and long-term slow-onset climate alterations, with repercussions we don’t yet understand.
- There are no easy or simple solutions. To increase our chances of remaining in a “safe living space,” we need to reverse damage to the global hydrological cycle with large-scale interventions, including reductions in water use, and reversals of deforestation, land degradation, soil erosion, air pollution and climate change.
Giant stingray caught in Cambodia is world’s largest freshwater fish
- The largest freshwater fish ever recorded was captured last week in Cambodia’s stretch of the Mekong River: a giant freshwater stingray measuring 4 meters (13 feet) from snout to tail and weighing 300 kilograms (661 pounds).
- The discovery occurred in a stretch of the Mekong known for its diversity of freshwater habitats that support crucial fish-spawning grounds and migration corridors and provide refuges for other mega fish species and threatened species, such as Irrawaddy dolphins and giant softshell turtles.
- Local fishers collaborating with researchers to document the area’s underwater life alerted a monitoring team who measured the ray, fitted it with an acoustic tag to learn more about its behavior, and facilitated its release back into the wild.
- Experts say the find emphasizes what’s at stake in the Mekong, a river that’s facing a slew of development threats, including major hydropower dams that have altered the river’s natural flow. “It is a signal to us to protect our rivers and lakes,” they say.
‘Lost’ Amazonian cities hint at how to build urban landscapes without harming nature
- Archaeologists have discovered the remains of a Pre-Columbian urban settlement that spans more than 4,500 square kilometers (1,737 square miles) in Bolivia’s Llanos de Mojos region, in the Amazon rainforest.
- This is the latest proof that large, complex urban societies existed in the Amazon before the arrival of the Spanish, challenging the idea that the rainforest was always a pristine, untouched wilderness.
- Some experts say we could learn from these Indigenous urban planning strategies, which, with a sophisticated land and water management system, show us how cities and the rainforest once co-existed without degrading the environment.
Indigenous agroforestry dying of thirst amid a sea of avocados in Mexico
- A rich tradition of cultivating and collecting medicinal plants in Mexico’s Michoacán state is at risk, as the Indigenous community behind it loses access to water.
- Avocado farms–mostly supplying the U.S. market–dominate water resources in the town of Angahuan, forcing Indigenous P’urhépecha healers to buy clean water by the gallon from shops to keep their medicinal plants alive.
- These healers, known as curanderas, have for generations grown a wide variety of such plants in agroforestry gardens that also combine fruits and vegetables, timber trees, and flowers.
- The P’urhépecha healers are resisting the impacts of avocado farms by planting trees in the hills to build up water resources while launching a natural pharmacy business in town, efforts for which the collective has already won an award from the state government.
Chinese pond heron spotted in Nepal for first time
- A Chinese pond heron (Ardeola bacchus) has been spotted for the first time in Nepal, bringing the total number of bird species known to occur in the country to 891.
- Photographers Raju Tamang and Prem Bomjan snapped a picture of the bird in Chitwan National Park, which is better known for its Bengal tigers and greater one-horned rhinos.
- Of the total 891 species, 650 have been found in Chitwan, which hosts important bird habitats, ranging from grasslands to hills to wetlands.
‘Water grab’: Big farm deals leave small farmers out to dry, study shows
- Large agricultural investment projects are often promoted as a way to increase food production and food security, but a recent analysis indicates that such projects often threaten water resources that local farmers and Indigenous populations depend on.
- While such investments can increase crop yields through the expansion of irrigation, the majority of the 160 projects studied were found to be likely to intensify water shortages through both the adoption of water-intensive crops and the expansion of irrigated cultivation.
- In effect, the researchers say, such deals can amount to “water grabs,” creating a crisis for local farmers who now find themselves competing with big investors for limited water resources.
Riders of the lost waves: Surfing, and saving, Brazil’s pororocas
- Surfers and volunteers are mapping out tidal bores — spectacular waves that travel dozens of kilometers upriver from Brazil’s Atlantic coast — in an effort to preserve the phenomenon and build a tourism industry around it.
- The best-known pororocas in Brazil are in the states of Amapá, Maranhão and Pará, and once included the Araguari River, site of the 2006 world record for the longest distance surfed (nearly 12 kilometers, or 7.5 miles).
- But the Araguari pororoca disappeared in 2014 when the river’s mouth silted over, the result of development upriver that included livestock ranching and dam building.
- Enthusiasts of the phenomenon now want to develop a Pororoca Park that they say will boost tourism on the Amazon coast, providing income for the Indigenous and traditional communities where many of the remaining pororoca sites are found.
Nepal’s Supreme Court axes plans to build controversial new airport
- Around 2.4 million trees, both big and small, had to be cut to construct the two-runway airport.
- The decision forces the government to look elsewhere in the country for possible locations to build the second international aviation hub.
In the Mekong’s murky depths, giants abound, new expedition finds
- An underwater expedition into the deepest pools in the Mekong River has confirmed the presence of giant freshwater fish, fish migration routes, and high volumes of discarded fishing gear and plastic waste.
- The international team of underwater explorers, local fish biologists and fishermen used deep-sea camera technology to document the ecological value of the unique area in northeastern Cambodia, which is characterized by 80-meter-deep (260-foot) pools, flooded forests and braided river channels.
- But just as researchers reveal the value of its biodiversity, food security and fisheries livelihoods, the area faces a new threat: earlier this year, feasibility surveys began for a hydropower dam planned for directly upstream of the deep-pool habitats.
- According to the expedition team, construction of the Stung Treng dam would have “devastating ecological effects and could seriously threaten local food security in an area of the world already impacted by changing climate.”
Better deep-bore wells aim to stop Indonesia’s groundwater waste
- Farmers in Pasuruan have long dug deep wells for irrigation, relying on the region’s volcanic aquifer to keep supplying plentiful water.
- But the wells are crude structures that lack a shutoff valve, meaning they discharge water nonstop.
- Researchers have developed an improved well system that can be shut off when not needed, but its cost is a potential downside for local farmers.
Freshwater planetary boundary “considerably” transgressed: New research
- Earth’s operating systems have stayed in relative balance for thousands of years, allowing the flourishing of civilization. However, humanity’s actions have resulted in the transgressing of multiple planetary boundaries, resulting in destabilization of those vital operating systems.
- This week scientists announced that humanity has transgressed the freshwater planetary boundary. Other boundaries already crossed are climate change, biosphere integrity, biogeochemical cycles (nitrogen and phosphorous pollution), land-system change, and novel entities (pollution by synthetic substances).
- In the past, the freshwater boundary was defined only by “blue water” — a measure of humanity’s use of lakes, rivers and groundwater. But scientists have now extended that definition to include “green water” — rainfall, evaporation and soil moisture.
- Scientists say soil moisture conditions are changing from boreal forests to the tropics, with abnormally dry and wet soils now common, risking biome changes. The Amazon, for example, is becoming far dryer, which could result in it reaching a rainforest-to-savanna tipping point, releasing large amounts of stored carbon.
In Mexico, a race to save the last wetlands of San Cristóbal de las Casas
- The mountain wetlands of La Kisst and María Eugenia are protected areas in the state of Chiapas, and have been listed as Ramsar sites of international importance. But that hasn’t been enough to guarantee their conservation.
- For more than a decade, local organizations have spoken out against the degradation of the wetlands, which provide around 70% of the water used in the city of San Cristóbal de las Casas.
- The National Commission on Human Rights (CNDH) said not all officials have worked to guarantee wetland conservation.
- It has called for the creation of a program to recover ecosystems and investigate those responsible for environmental crimes.
The world’s dams: Doing major harm but a manageable problem?
- Dam construction is one of the oldest, most preferred tools to manage freshwater for various uses. The practice reached a peak internationally in the 1960s and ’70s, but in recent years dam construction has faced increasing global criticism as the hefty environmental price paid for their benefits piles up.
- The flows of most major waterways have been impacted by dams globally. Only 37% of rivers longer than 1,000 km (620 mi) remain free-flowing, and just 23% flow uninterrupted to the sea. Natural flows will be altered for 93% of river volume worldwide by 2030, if all planned and ongoing hydropower construction goes ahead.
- This global fragmentation of rivers has led to severe impacts. Dams have contributed to an 84% average decline in freshwater wildlife population sizes since 1970. More than a quarter of Earth’s land-to-ocean sediment flux is trapped behind dams. Dams also impact Earth’s climate in complex ways via modification of the carbon cycle.
- But dams are needed for energy, agriculture and drinking water, and are an inevitable part of our future. Lessons on how to balance their benefits against the environmental harm they do are already available to us: removing some existing dams, for example, and not building others.
Protecting water by conserving forests puts communities in Mexico to the test
- Almost 15 years ago, the inhabitants of eight towns in southern Mexico’s Costa Chica decided to conserve an area that provides them with water by setting aside five square kilometers of their land to create an ecological reserve.
- Previously, sewage from the largest municipality in the area was discharged into the rivers that communities used for washing, bathing and drinking.
- Conflicts initially broke out between communities over sharing water and contributions to the protection of the reserve, though the project has sensitized people to conservation and increased the amount of water in the spring.
- However, according to forestry experts, Mexico’s protected natural areas have exceeded the institution’s capacity and available resources, meaning the communities that manage the conservation of the reserve receive little institutional support.
On a Honduran island, a community effort grows to protect its precious reefs
- On the tourism-reliant island of Roatán in Honduras, a homegrown environmental organization has allied with local communities to ensure the natural beauty that draws visitors remains safe.
- Roatán sits along the Mesoamerican Reef, and is home to rich corals and lush mangroves, which face threats from the tourism boom.
- The Bay Islands Conservation Association (BICA) takes a three-pronged approach to its work, focusing on science, institutional support for the authorities, and community work.
- The group’s success over the years is unusual in Honduras, which routinely ranks among the most dangerous countries for environmental activists.
Indigenous communities transform a Mexican desert landscape into forest
- In the Mexican state of Oaxaca, 22 communities have taken on the challenge of reviving soils depleted by centuries of overgrazing.
- Over the last two decades, they’ve managed to restore at least 20,000 hectares (49,000 acres), turning many sites into burgeoning forests.
- The task is especially challenging because the communities are starting from “less than zero” — having to find ways to restore their soil before they can even think about planting trees.
- The success of the initiative means the communities can now look forward to more options for forest-based livelihood, such as agroforestry or even selling carbon credits.
Cambodian project aims to revive flagging fish populations in Tonle Sap Lake
- Struggling freshwater fish populations in the Mekong River catchment received a boost earlier this month when a team of scientists and fisheries specialists released 1,500 captive-reared juvenile fish into Tonle Sap Lake in Cambodia.
- Experts say the release is the first step in rejuvenating the Mekong’s depleted fish populations and fisheries, which have been suffering in recent years due to overfishing, drought, habitat destruction, and the impacts of upstream dams on the Mekong River’s natural flow.
- The fish, including critically endangered Mekong giant catfish and giant barb, and endangered striped river catfish, were released into a series of fish sanctuaries and community conservation areas that protect crucial fish nursery habitat in Tonle Sap Lake, the world’s most productive inland fishery.
- Long-term survival of the Mekong’s threatened fish species will also depend on protection of migration corridors and upstream spawning grounds, and on maintenance of free-flowing and connected watercourses, say experts.
Pharmaceutical water pollution detected deep in the Brazilian Amazon
- Major rivers in the Amazon Basin of Brazil are contaminated with a wide range of pharmaceuticals as well as with sewage and wastewater, largely coming from urban centers in the region, according to recent research.
- Water samples taken along the Amazon, Negro, Tapajós and Tocantins rivers, and small urban tributaries that pass through the region’s cities, including Manaus, Santarém, Belém and Macapá contained 40 pharmaceuticals out of 43 in concentrations that have the potential to affect 50-80% of the local aquatic species.
- Experts explain that a major cause of freshwater contamination is the Amazon Basin’s rapidly growing population along with the government’s failure to provide adequate sanitation infrastructure — even though that has long been promised. Most of the region’s sewage is untreated, a solvable problem if properly funded.
Microplastics plus organic pollutants equals 10 times the toxicity, study finds
- A new study has found that interactions between microplastics and organic pollutants in aquatic environments can increase the toxicity of microplastics by a factor of 10.
- The researchers found that some “weathered” microplastics tended to absorb and release more contaminants than pristine microplastics, posing a threat to human health if these microplastics are ingested.
- Nations this week agreed to negotiate a global treaty that addresses the entire life cycle of plastics in an effort to suppress the harm it does to the environment and human health.
From humble roots, a restoration plan in Brazil aims for 1.5m hectares of forest
- A program to restore forest cover in a watershed area that serves São Paulo and other urban centers has restored 5,000 hectares (12,400 acres) since 2016.
- The Conservador da Mantiqueira program includes 425 municipalities in the Mantiqueira Mountains in the states of São Paulo, Rio de Janeiro and Minas Gerais.
- The program was inspired by the smaller Conservador das Águas project in the municipality of Extrema, Minas Gerais state, which has planted more than 2 million native trees since it started in 2005, and pioneered the use of payment for ecosystem services (PES) in Brazil.
- The Mantiqueira Mountains watershed, part of the Atlantic Forest, is the source of the largest rivers supplying water to southeastern Brazil’s major cities.
In Nepal, a messy breakup with hybrid seeds is good news for organic farming
- Some farmers in Nepal are slowly returning to organic farming methods using native crop varieties, after more than a decade of hybrid seeds being available in the market.
- Critics say hybrids require more intensive use of chemical fertilizers and pesticides, and produce fruit and vegetables with less flavor than native or openly pollinated varieties.
- The government is also supporting the push for organic, including through subsidies for farmers, but acknowledges it’s difficult to change minds.
- Many farmers continue to prefer hybrids, despite the associated problems, because of their higher yields, which mean more income.
Tiny plastic particles accumulating in river headwaters: Study
- Researchers modeled the journey of microplastics released in wastewater treatment plant effluent into rivers of different sizes and flow speeds, focusing on the smallest microplastic fragments — less than 100 microns across, or the width of a single human hair.
- The study found that in slow-flowing stream headwaters — often located in remote, biodiverse regions — microplastics accumulated quicker and stayed longer than in faster flowing stretches of river.
- Microplastic accumulation in sediments could be the ‘missing plastic’ not found in comparisons of stream pollution levels with those found in oceans. Trapped particles may be released during storms and flood events, causing a lag between environmental contamination and release to the sea.
- A few hours in stream sediments can start to change plastics chemically, and microbes can grow on their surfaces. Most toxicity studies of microplastics use virgin plastics, so these environmentally transformed plastics pose an unknown risk to biodiversity and health.
Malaysian officials dampen prospects for giant, secret carbon deal in Sabah
- The attorney general of the Malaysian state of Sabah has said that a contentious deal for the right to sell credits for carbon and other natural capital will not come into force unless certain provisions are met.
- Mongabay first reported that the 100-year agreement, which involves the protection of some 2 million hectares (4.9 million acres) from activities such as logging, was signed in October 2021 between the state and a Singapore-based firm called Hoch Standard.
- Several leaders in the state, including the attorney general, have called for more due diligence on the companies involved in the transaction.
- Civil society representatives say that a technical review of the agreement is necessary to vet claims about its financial value to the state and its feasibility.
Gulf of Thailand oil pipeline leak threatens reef-rich marine park
- An oil spill in the Gulf of Thailand that began in late January threatens to impact coral reefs, seagrass beds and local livelihoods in a nearby marine park.
- The spill, reported late on Jan. 25, originated from an underwater pipeline owned and operated by Thailand-based Star Petroleum Refining PLC, which said between 20,000 and 50,000 liters (5,300-13,200 gallons) of oil leaked into the ocean.
- Cleanup efforts are underway to deal with the crude oil slick at sea and along beaches on the mainland where parts of the slick have washed up.
- More than 200 oil spills have occurred in Thailand’s waters over the last century; environmental groups have called on Thailand’s government to transition the country away from fossil fuels, and on the oil and gas industry to better implement preventative measures to avoid future disasters.
Polluting with impunity: Palm oil companies flout regulations in Ecuador
- Community residents and researchers alike decry what they say is dangerous pollution leaching into soil and waterways from oil palm plantations and palm oil extraction mills in Ecuador.
- In July 2020, Ecuador’s government passed a law to strengthen and develop the production, commercialization, extraction, export and industrialization of palm oil and its derivatives.
- The law also prohibits oil palm plantations from being established within zones where communities’ water sources are located, and requires the existence of native vegetation buffers between plantations and water bodies.
- But critics say the regulatory portion of the law has been largely toothless and that the government has turned a blind eye to the social and environmental costs of the country’s rapid plantation expansion.
Community in Ecuador punished for trying to stop alleged palm oil pollution
- A legal loophole allowed palm oil companies in Ecuador to establish plantations on ancestral land that belongs to small communities.
- Community residents say that agricultural chemicals and waste from plantations and palm oil processing mills is polluting the water sources on which they depend.
- In an effort to stop the contamination of their water and the degradation of their land, residents of the community of Barranquilla spent three months occupying the access road to plantations surrounding their village in 2020.
- In retaliation, the company that owns and operates the plantations, Energy & Palma, sued four members of the community for lost profits; in Sep. 2021, courts ruled in the company’s favor and ordered the four to pay $151,000 to the company.
Standing Rock withdraws from ongoing environmental assessment of Dakota Access Pipeline
- The Standing Rock Sioux Tribe has withdrawn as a cooperating agency from the U.S Federal government’s ongoing environmental assessment of the Dakota Access Pipeline (DAPL) operations, citing lack of transparency by the U.S Army Corps of Engineers and the pipeline operators, Energy Transfer.
- Standing Rock tribal leaders have raised concerns about the oil spill emergency response plans made available to them and believe that Energy transfer has understated how big the potential of an oil spill might be.
- Janet Alkire, the newly elected Standing Rock Sioux tribal chairperson, has called on the Army Corps to address the issues they have highlighted in the emergency response plans or to shut down the Dakota Access pipeline immediately to safeguard the lives of tribal members.
- According to U.S. Army Corps of Engineers, concerns raised by the Standing Rock Sioux Tribe will be considered as it issues the draft Environmental Impact Statement and the organization would have preferred if the tribe remained involved as a cooperating agency.
In Kathmandu, a struggle for water amid worsening floods
- In Kathmandu, residents face the dual challenges of freshwater aquifers running dry, and increasingly unpredictable monsoons causing flash floods.
- The combination of climate change and a rapidly growing urban population is straining an already overwhelmed municipal water system, forcing many residents to have to buy water by the tank at high prices.
- An ambitious project to pipe water to the city from a nearby river was shut down within months of its long-delayed start — a victim of the monsoon floods that destroyed a dam and water treatment plant.
- Another solution being explored is rainwater harvesting, which proponents say should be complemented by restoration of Kathmandu’s green areas and restrictions on drawing groundwater.
China’s building spree in Nepal casts shadow over Himalayan ecosystem
- China’s role in Nepal has intensified in the period since the 2015 earthquake, mostly in the form of investments in rebuilding projects. In 2019 alone, China initiated a series of projects, including factories and hydropower plants, worth $2.4 billion in Nepal.
- Many of the infrastructure projects run through sensitive environments, including national parks, and the construction of hydropower plants has been criticized by environmental organizations and local communities for destroying river ecosystems.
- For example, work on the Rasuwagadhi hydroelectric project, part of China’s Belt and Road Initiative, resumed in 2016, despite protests from locals who blamed the dam for mass fish deaths.
Sinkholes emerge in rural Kenya after series of floods, droughts
- In recent years, a number of sinkholes have emerged in Baringo county, a geologically active region in western Kenya’s Great Rift Valley.
- According to geologists, their appearance can be linked both to the worsening impacts of climate change through floods and droughts, and local communities drilling boreholes along precarious fault lines to access more water.
- According to members of the community, the sinkholes have yet to spur the county or the government into action, with food aid currently provided by local human rights organizations.
- Increases in floods are driving human-wildlife conflict for space, and pastoralists are having difficulty adapting to environmental changes.
As its glaciers melt, Nepal is forced into an adaptation not of its choosing
- Climate change is causing the glaciers in Nepal’s Himalayan region to melt at an alarming rate, threatening fragile ecosystems, vulnerable communities, and billions of people downstream who rely on the rivers fed by the ice pack.
- If global greenhouse gas emissions continue on a business-as-usual trajectory and average global temperatures rise by more than 4°C (7.2°F) by 2100, the Himalayan region could lose up to two-thirds of its glaciers, a study shows.
- For farming communities, this means water shortages, less feed for their livestock, and increased risks of natural disasters such as landslides and glacial lake flash floods.
- The Himalayas are, at present, heating up at rates up to 0.7°C (1.3°F) higher than the global average, and poor communities are already feeling the impacts.
As climate-driven drought slams farms in U.S. West, water solutions loom
- Drought in the U.S. West has been deepening for two decades, with no end in sight. Unfortunately for farmers, water use policies established in the early 20th century (a time of more plentiful rainfall), have left regulators struggling with their hands tied as they confront climate change challenges — especially intensifying drought.
- However, there is hope, as officials, communities and farmers strive to find innovative ways to save and more fairly share water. In Kansas and California, for example, new legislation has been passed to stave off dangerous groundwater declines threatening these states’ vital agricultural economies.
- Experts say that while an overhaul of the water allocation system in the West is needed, along with a coherent national water policy, extreme measures could be disruptive. But there are opportunities to realize incremental solutions now. Key among them is bridging a gap between federal water programs and farmers.
- A major concern is the trend toward single crop industrial agribusiness in semi-arid regions and the growing of water-intensive crops for export, such as corn and rice, which severely depletes groundwater. Ultimately, 20th century U.S. farm policies will need to yield to flexible 21st century policies that deal with unfolding climate change.
Indigenous leader sues over Borneo natural capital deal
- An Indigenous leader in Sabah is suing the Malaysian state on the island of Borneo over an agreement signing away the rights to monetize the natural capital coming from the state’s forests to a foreign company.
- Civil society and Indigenous organizations say local communities were not consulted or asked to provide input prior to the agreement’s signing on Oct. 28.
- Further questions have arisen about whether the company, Hoch Standard, that secured the rights under the agreement has the required experience or expertise necessary to implement the terms of the agreement.
First Nations unite to fight industrial exploitation of Australia’s Martuwarra
- The Fitzroy River in the Kimberley region of Western Australia, one of the country’s most ecologically and culturally significant waterways, is facing proposals of further agriculture and mining development, including irrigation and fracking.
- In response, First Nations communities in the region have developed different methods to promote the conservation of the river, including curating cultural festivals, funding awareness campaigns, and working with digital technologies.
- First Nations land rights are held along the length of the Fitzroy River, the first time this has occurred across an entire catchment area in Australia.
- The catchment is the last stronghold of the world’s most “evolutionarily distinct and globally endangered” species, the freshwater sawfish (Pristis pristis) and is home to the threatened northern river shark (Glyphis garricki).
Is colonial history repeating itself with Sabah forest carbon deal? (commentary)
- To the surprise of Indigenous and local communities, a huge forest carbon conservation agreement was recently signed in the Malaysian state of Sabah on the island of Borneo.
- Granting rights to foreign entities on more than two million hectares of the state’s tropical forests for the next 100-200 years, civil society groups have called for more transparency.
- “Is history repeating itself? Are we not yet free or healed from our colonial and wartime histories?” wonders a Sabahan civil society leader who authored this opinion piece calling for more information, more time, and a say.
- This post is a commentary. The views expressed are those of the author, not necessarily of Mongabay.
Details emerge around closed-door carbon deal in Malaysian Borneo
- Leaders in Sabah have begun to reveal information about a nature conservation agreement signed in the Malaysian state of Sabah on the island of Borneo for the rights to carbon and other natural capital.
- The deal allegedly covers rights to more than 2 million hectares (4.9 million acres) of the state’s tropical forests for the next 100-200 years.
- Indigenous and civil society groups have called for more transparency.
- In response to the public reaction to news of the agreement, its primary proponent, Deputy Chief Minister Jeffrey Kitingan, held a public meeting but has declined to make the agreement public yet.
An unlikely safari in Brazil is helping save the Pantanal’s jaguars
- A pioneer in wildlife safaris in Brazil, the Onçafari Project combines jaguar sightseeing with conservation of the species and its reintroduction into nature.
- Thanks to the strategy of getting jaguars habituated to safari vehicles, the Pantanal has become the best place in Brazil to spot the feline; the number of tourists at the project’s host farm has tripled in a decade.
- The presence of tourists has changed farmers’ mentality, from previously seeing jaguars as a pest to kill, to now even working as Onçafari tour guides.
- In 2015, Onçafari recorded the world’s first successful case of reintroduction of captive jaguars into nature; the two females have since given birth to five offspring and even four grandcubs.
Struggle endures for Philippine community pitted against gold miner
- Australian-Canadian mining firm OceanaGold was recently granted a renewal of its permit to mine gold and copper in the northern Philippines.
- The mine has faced years of opposition from area residents, mostly Indigenous people, who say it has scarred their land and threatens the water systems they depend on.
- In 2019, when the company’s previous mining permit expired, protesters mounted barricades to block activity at the mine.
- This year, restrictions put in place to curb the spread of COVID-19 have hampered their ability to organize.
From flood to drought, Brazil’s Acre state swings between weather extremes
- Extreme weather conditions, from massive flooding to severe water shortages, have rocked cities and small communities alike in the heart of the Brazilian Amazon this year, a trend experts attribute to climate change and human actions.
- The Acre River, which crosses the state of same name in the western Brazilian Amazon, is experiencing its second-worst drought in recorded history, with water levels close to record lows.
- The water shortage comes just months after the same region experienced widespread flooding as the Acre River overflowed its banks and forced hundreds of thousands of people to flee their homes.
- Brazil as a whole is facing its worst dry spell in nearly a century, which is affecting water supplies for people, agriculture and electricity generation, and is part of a global pattern of increased water stress.
Poisoned city: The story of Brazil’s forgotten environmental disaster
- Hundreds of tons of carcinogenic agrochemicals, including DDT, were abandoned by the Brazilian government at a factory near an orphanage on the outskirts or Rio de Janeiro in the 1960s.
- The factory had produced the pesticides as part of the government’s push to eradicate malaria-carrying mosquitoes.
- After it shut down, the residents, unaware of the dangers of the chemicals, continued to use them, even applying the dust directly to their children’s hair to kill head lice.
- More than half a century later, residents continue to suffer from the impact on their health, with 73% of those tested having high levels of contamination in their bodies.
Oil spills plague Venezuelan coast, but cleanup efforts are lacking: Report
- There have been 53 oil spills in Venezuela this year through September, most of them concentrated on the Caribbean coast where massive government oil refineries operate with little environmental oversight.
- The Venezuelan government rarely publishes records of oil spills or other environmental conflicts, making it difficult to track oil spills and coordinate appropriate responses.
- The oil spills are doing incalculable damage to local ecosystems, which include mangroves and the estuary known as Lake Maracaibo.
Nitrogen: The environmental crisis you haven’t heard of yet
- The creation of synthetic fertilizers in the early 20th century was a turning point in human history, enabling an increase in crop yields and causing a population boom.
- But the overuse of nitrogen and phosphorus from those fertilizers is causing an environmental crisis, as algae blooms and oceanic “dead zones” grow in scale and frequency.
- Of the nine “planetary boundaries” that scientists say we must not cross in order to sustain human life, the boundary associated with nitrogen and phosphorus waste has been far surpassed, putting Earth’s operating system at risk.
- Global policymakers are beginning to slowly recognize the scale of the problem, as climate change threatens to make it worse. Absent major reforms to agribusiness practices, scientists are aiming to convince the world to reduce waste.
Not just sea life: Migratory fish, birds and mammals also fall foul of plastic
- A new report from the U.N. Environment Programme and the Convention on the Conservation of Migratory Species of Wild Animals confirms that plastic pollution poses a major threat to land and freshwater migratory species.
- Mammals, birds and fish are affected through various means, including entanglement, ingestion of plastics, accumulation of microplastics in the food chain, and using plastics in nesting material.
- The report highlights that global capacity to manage plastic pollution is not keeping pace with projected growth in the plastics market.
- The authors call for measures that will ultimately drive change upstream to reduce the volume of plastics entering the marketplace.
Rio Tinto-owned mine is polluting Malagasy water with uranium and lead, NGOs say
- Some sites near a Rio Tinto-owned mine in Madagascar have recorded uranium and lead levels 52 and 40 times in excess of WHO safe drinking water standards, a recent analysis found.
- Around 15,000 people in Madagascar’s Anosy region depend on these water sources, including for drinking, a coalition of NGOs in the U.K. and Madagascar, pointed out, calling on the company to provide safe drinking water to the communities.
- Mine operator QIT Madagascar Minerals (QMM), which is 80% owned by Rio Tinto, extracts ilmenite at the mine, a process that generates wastewater rich in minerals like uranium and lead, according to a report commissioned by the Andrew Lees Trust UK.
- QMM in its response to the NGOs indicated that the high concentrations were naturally occurring and denied that it was polluting the water.
Nature takes a beating after chemical explosion in South Africa civil unrest
- Unknown quantities of toxic agricultural chemicals spilled into an estuary on the Indian Ocean following an arson attack on a warehouse during civil unrest and looting in South Africa in July.
- The fire burned for 10 days, exposing thousands of people to clouds of poisonous fumes and soot, with poor communication of the health risks to affected communities.
- Thousands of fish and other aquatic organisms were killed by a torrent of turquoise effluent that flowed from warehouse, which held as many as 1,600 different types of chemicals.
- The incident has exposed significant weaknesses in the regulation of hazardous installations, along with major flaws in emergency and pollution control response by South African authorities.
As populations grow, how will thirsty cities survive their drier futures?
- The world’s rapidly expanding cities are on a collision course with climate change, presenting unprecedented challenges to municipal and national governments as they work to continue providing residents with access to safe and sufficient water.
- Increasingly, calls are made to rethink the way we develop urban watersheds and the way we live in them — with water sourcing, transport, use and reuse planning key to the process. One approach, water-sensitive urban design (WSUD) entails a complete reimagining of the role and use of water in urban areas.
- WSUD embraces the water cycle, and considers the entire watershed where cities are located. It uses green infrastructure such as permeable pavements, green roofs and rain gardens, to greatly reduce stormwater runoff. Conscious design allows water to be recycled and reused repeatedly for various purposes. Waste is greatly reduced.
- Some cities are already changing their development pathways to be more resilient to inevitable future climate extremes, with Singapore and Cape Town leading the way. Future water stress can be overcome, but work needs to start now before extreme weather events, including mega droughts and floods, hit.
Cambodian dam a ‘disaster’ for local communities, rights group says
- Rights activists allege that a Chinese-financed hydroelectric project in northeastern Cambodia has been a human rights “disaster” after it displaced nearly 5,000 Indigenous and ethnic minority people.
- In a recent report, advocacy group Human Rights Watch says communities were largely coerced into accepting inadequate compensation and provided with substandard resettlement arrangements.
- The scheme also had wide-ranging environmental impacts, affecting fishery yields across the wider Mekong Basin and flooding vast areas of forest.
- The report highlights the humanitarian and environmental shortcomings of China’s Belt and Road Initiative, which is advancing many similar projects across Africa and Asia.
In Chile, a prickly coalition tries to bring a salt flat back to life
- Indigenous communities, environmental activists and a mining company have agreed on a set of measures to try to save the Salar de Punta Negra salt flat in northern Chile.
- Communities say the extraction of groundwater by copper miner Minera Escondida has drained the salt lake and caused irreparable environmental harm.
- Under a court-mediated settlement, all sides have agreed to a series of scientific studies to help identify the cause of the problem and options for addressing it.
- Not everyone is happy about the agreement, however, with some criticizing the meager budget allocation for carrying out the studies compared to the much larger funding for publishing the results.
On the Colombian plains, a leader stands up for her people against land theft
- Ana Villa has fearlessly confronted agribusiness multinationals and armed groups that have tried to take over the land where rural communities and Indigenous people live in the Colombian plains.
- She risks her life fighting for the rights of vulnerable communities in the municipality of Cumaribo, a region that serves as the intermediate zone between the savanna and the Amazon rainforest in eastern Colombia’s Vichada department.
- The communities’ support has empowered her to continue her fight in a dangerous region for environmental defenders.
A world of hurt: 2021 climate disasters raise alarm over food security
- Human-driven climate change is fueling weather extremes — from record drought to massive floods — that are hammering key agricultural regions around the world.
- From the grain heartland of Argentina to the tomato belt of California to the pork hub of China, extreme weather events have driven down output and driven up global commodity prices.
- Shortages of water and food have, in turn, prompted political and social strife in 2021, including food protests in Iran and hunger in Madagascar, and threaten to bring escalating misery, civil unrest and war in coming years.
- Experts warn the problem will only intensify, even in regions currently unaffected by, or thriving from the high prices caused by scarcity. Global transformational change is urgently needed in agricultural production and consumption patterns, say experts.
Lessons from Brazil’s São Paulo droughts (commentary)
- São Paulo is increasingly facing severe droughts, as is the case in 2021. In 2014 the city came close to having its reservoirs run dry. Brazil’s agriculture and hydropower also depend on reliable rains.
- Anthropogenic climate change is increasing the fluctuations in ocean surface water temperatures, and the frequency is increasing of the combination of warm water in the Atlantic and cold water in the Pacific off the coasts of South America, a combination that leads to droughts in São Paulo.
- The trends in ocean temperatures are expected to worsen these droughts, but what could make them truly catastrophic is the prospect of this variation being combined with the impact of deforestation depriving São Paulo of the water that is recycled by the Amazon forest and transported to southeastern Brazil by the “flying rivers.” The lessons are clear: control global warming and stop deforestation.
- This post is a commentary. The views expressed are those of the author, not necessarily Mongabay.
Cerrado desertification: Savanna could collapse within 30 years, says study
- Deforestation is amplifying climate change effects in the Brazilian Cerrado savanna biome, making it much hotter and drier. Researchers observed monthly increases of 2.24°C (4.03°F) in average maximum temperatures between 1961 and 2019. If this trend persists, temperature could be 6°C (10.8°F) higher in 2050 than in 1961.
- Cerrado air moisture is decreasing partly due to the removal of trees, which bring water up from as much as 15 meters (nearly 50 feet) underground to carry on photosynthesis during the dry season. Replacement of native vegetation by crops also reduces the absorption of sunlight by wild plants and leads to an increase in temperature.
- Even dew, the only source of water for smaller plants and many insects during the dry season, is being reduced due to deforestation and deepening drought. The demise of pollinators that rely on dew may prompt a cascading effect adversely impacting the biome’s biodiversity, which could collapse in the next 30 years.
- The Cerrado is often called Brazil’s “water tank,” as it is the source of eight of 12 Brazilian river basins. Its looming biome collapse and deepening drought mean less water for rural and urban populations and for agriculture. Low flows in rivers will also affect hydropower, likely causing energy shortages.
Study puts 2050 deadline on tipping point for Mekong Delta salinity
- The increasing salinity in Mekong Delta is currently being driven by the building of dams upstream and sand mining downstream, but climate change will likely be the predominant factor by 2050, a new study shows.
- The Mekong Delta is a key farming region, and already more frequent and extensive saltwater intrusion is killing off large swaths of crops with greater frequency.
- The study’s authors say regional stakeholders need to address the anthropogenic drivers of saltwater intrusion in the delta now, before climate change makes it a global problem.
- The study also has implications for other delta systems across Asia, which face similar pressures, both anthropogenic and climate change-driven.
Amazon and Cerrado deforestation, warming spark record drought in urban Brazil
- Southern and central Brazil are in the midst of the worst drought in nearly 100 years, with agribusiness exports of coffee and sugar, and the production of hydroelectric power, at grave risk.
- According to researchers, the drought, now in its second year, likely has two main causes: climate change, which tends to make continental interiors both hotter and drier, and the deforestation of the Amazon rainforest and Cerrado savanna biomes.
- Deforestation has caused the loss of almost half of the Cerrado’s native vegetation, which helps hold vast amounts of water underground, maintaining aquifers that supply the nation’s rivers with water. In the Amazon, rainforest loss is preventing billions of tons of water vapor from reaching the atmosphere.
- President Jair Bolsonaro acknowledges neither climate change nor deforestation as sources of the drought, but attributes it instead to the country and himself being “unlucky.” The administration’s drought response so far is to reactivate fossil-fuel power plants, which pollute heavily and are costly to operate.
Global demand for manganese puts Kayapó Indigenous land under pressure
- InfoAmazonia’s Amazônia Minada project has found an unusual rise in demand to mine for manganese last year in Brazil, one of the world’s top producers of the metal.
- Previously, only 1% of mining bids on Indigenous lands were for manganese; in 2020, it was with 15% of all requests, second only to gold.
- Some of the richest manganese deposits in the world are in southeast Pará state, overlapping with the territories of the Kayapó Indigenous people, which have been targeted the most by mining applications in general.
- Demand from Asia, particularly China, has increased the price of manganese, driving illegal mining; 300,000 tons of the ore were seized last year in Brazil, including from a company bidding to mine on Indigenous land.
Rights groups demand end to Cambodia’s persecution of green activists
- A court in Cambodia has charged three activists from the environmental NGO Mother Nature Cambodia after they documented waste dumping in a river near the Royal Palace.
- It’s the latest instance of authorities cracking down on environmental activists in the country, after three other Mother Nature Cambodia staff were convicted in May for planning a peaceful protest against the backfilling of a lake.
- Local and international rights groups have condemned the spate of arrests and called on the international and donor community to bring pressure to bear on the government.
- There’s already been some pushback, with the U.S. government ending its funding of a forest conservation program, and the U.S. ambassador calling on Cambodian authorities to “be responsive to its citizens, not to silence them.”
Amazon dams: No clean water, fish dying, then the pandemic came
- Villagers living near the Teles Pires and São Manoel dams in Brazil’s Mato Grosso state — including the Apiaká, Kayabí and Munduruku peoples — attest to poor water quality, lack of potable water, increased malaria and rashes since the dams were built on their river. They also say there has been little response from the dam companies.
- Indigenous peoples say the Brazilian hydroelectric projects have altered river ecology along with thousands of years of cultural practice, especially their fishing livelihood. Migratory fish and other game fish have been greatly diminished, so residents must now resort to fishing at night.
- Once the COVID-19 pandemic arrived in the region, lack of clean water for bathing became even more urgent, while disappearing fish in daily diets made it harder to get food or isolate in riverside villages. Only under judicial order did dam companies recently improve water supply infrastructure.
- Experts trace these adverse impacts back to the dams’ planning stages: with the construction companies skipping legally mandated steps, not consulting Indigenous peoples as required, and failing to calculate cumulative impacts of multiple dam projects. Villagers are now monitoring impacts — and some are studying the law.
After two collapses, a third Vale dam at ‘imminent risk of rupture’
- Vale, the Brazilian mining company responsible for two deadly dam collapses since 2015, has another dam that’s at “imminent risk of rupture,” a government audit warns.
- The Xingu dam at Vale’s Alegria mine in Mariana municipality, Minas Gerais state, has been retired since 1998, but excess water in the mining waste that it’s holding back threatens to liquefy the embankment and spark a potentially disastrous collapse.
- Liquefaction also caused the collapse of a Vale tailings dam in 2019 in Brumadinho municipality, also in Minas Gerais, that killed nearly 300 people; the 2015 collapse of another Vale dam, in Mariana in 2015, caused extensive pollution and is considered Brazil’s worst environmental disaster to date.
- Vale has denied the risk of a collapse at the Xingu dam and says it continues to monitor the structure ahead of its decommissioning; regulators, however, say the company still hasn’t carried out requested measures to improve the structure’s safety, and have ordered an evacuation of the immediate vicinity.
Scientists call for solving climate and biodiversity crises together
- A new report from United Nations’ Intergovernmental Panel on Climate Change (IPCC) and the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) highlights the importance of confronting climate change and biodiversity loss together.
- Global climate change and the unprecedented loss of species currently underway result from a similar suite of human-driven causes, the report’s authors write.
- As a result, solutions that take both issues into account have the best chance of success, they conclude.
As the world’s biggest users of water, business must act to save it (commentary)
- Water is a problem that has historically been overlooked, but the conversation around water is growing, and companies no longer have the excuse to turn a blind eye.
- The World Bank has found that failure to tackle the current water crisis by implementing better water management practices could cause 6% regional GDP losses by 2050.
- Investors who want to consider water could make decisions on companies based on how those companies address the value of water throughout their operations by, for example, reporting on and managing their water-related risks.
- This post is a commentary. The views expressed are those of the authors, not necessarily Mongabay.
Hold the scuba: These lizards can breathe underwater
- Researchers recently discovered that several species of semi-aquatic anole lizards can breathe underwater — or rebreathe — for up to 18 minutes.
- They observed that anoles have hydrophobic skin that allows a thin layer of air to form around their bodies when they dive underwater, which they believe aids their rebreathing process.
- When the anoles exhale underwater, a bubble of air forms over their snout and then goes back into their nostrils when they inhale.
- The researchers believe that anoles evolved to rebreathe underwater to avoid predators, although more research is needed to confirm this.
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