location: Amazon River

location: Amazon River

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Ancient giant river dolphin species found in the Peruvian Amazon
- Paleontologists discovered a fossilized skull of a newly described species of giant freshwater dolphin in the Peruvian Amazon, which lived around 16 million years ago and is considered the largest-known river dolphin ever found.
- The ancient creature, measuring 3-3.5 meters (9.8-11.5 feet), was surprisingly related to South Asian river dolphins rather than the local, living Amazon river pink dolphin and shared highly developed facial crests used for echolocation.
- The discovery comes at a time when the six existing species of modern river dolphins face unprecedented threats, with their combined populations decreasing by 73% since the 1980s due to unsustainable fishing practices, climate change, pollution, illegal mining and infrastructure development.
- Conservation efforts are underway, including the signing of the Global Declaration for River Dolphins by nine countries and successful initiatives in China and Indonesia, highlighting the importance of protecting these critical species that serve as indicators of river ecosystem health.

Amazon catfish must be protected by the Convention on Migratory Species COP-14 (commentary)
- The latest Convention on Migratory Species of Wild Animals (also known as the Bonn Convention) meeting (COP-14) is taking place in Uzbekistan this month, and the government of Brazil has proposed protections for two catfish species with extraordinary migrations, the dorado and piramutaba (manitoa).
- The dorado’s migratory journey for instance spans a distance of 11,000+ kilometers round trip, from the Andes to the mouth of the Amazon River, and along the way it connects multiple ecosystems and feeds local and Indigenous fishing communities, but is under increasing threat.
- “During COP-14, the dorado and piramutaba will take a prominent place thanks to the Brazilian Government’s proposal to include them in CMS Appendix II…It is essential that the governments at the meeting adopt Brazil’s proposal,” a new op-ed argues.
- This article is a commentary. The views expressed are those of the author, not necessarily Mongabay.

Amazonia in flames: Unlearned lessons from the 2023 Manaus smoke crisis (commentary)
- In 2023 the city of Manaus, in central Amazonia, found itself covered in dense smoke from burning rainforest, with levels of toxic PM 2.5 particulates even higher than those experienced that year during the pollution crisis in New Delhi, India.
- The governor of Brazil’s state of Amazonas, where Manaus is located, blamed the neighboring state of Pará for the smoke, a politically convenient theory we show to be false.
- The fires responsible for the smoke were south of Manaus in an area of Amazonas impacted by the notorious BR-319 highway, where a proposed “reconstruction” project would have disastrous environmental consequences by opening vast areas of rainforest to the entry of deforesters.The BR-319 highway project is a top priority for politicians in Amazonas, who take pains not to admit to the project’s impacts. The project’s environmental license is not yet approved, and the Manaus smoke crisis should serve as a warning as to how serious those impacts would be.
- This text is a commentary and does not necessarily reflect the views of Mongabay.

Mega oil and gas auction in the Brazilian Amazon may threaten Indigenous lands
- One day after the COP28 climate summit closed in Dubai, where Brazil’s president reinforced the need to slash greenhouse gas emissions, the country’s National Oil, Gas and Biofuels Agency (ANP) put up 602 oil and gas exploration blocks for auction, including 21 in the Amazon River Basin.
- The blocks violate state environmental guidelines and overlap with protected areas and Indigenous and Quilombola territories, according to an analysis by the Arayara International Institute.
- In the latest round of bidding, the agency sold 192 blocks out of the 602 on offer, including to well-known companies such as Chevron, Petrobras, BP and Shell. The precise locations of these purchased oil blocks is not yet clear.
- The ANP maintains that these auctions are important to avoid drops in production and provide cheap energy for the country and its clean energy transition.

AI unlocks secrets of Amazon river dolphins’ behavior, no tagging required
- Freshwater dolphins in the Amazon Basin navigate through flooded forests during the wet season using their flexible bodies and echolocation clicks.
- Researchers have combined advanced acoustic monitoring and AI to study the habits of endangered pink river dolphins (boto) and tucuxi in seasonally flooded habitats.
- They used hydrophones to record sounds in various habitats and employed convolutional neural networks (CNN) to classify the sounds as either echolocation clicks, boat engine noises, or rain — with high accuracy.
- Understanding the dolphins’ movements and behaviors can aid conservation efforts to protect these endangered species, as they face various threats such as fishing entanglement, dam construction, mining, agriculture and cattle ranching.

Fishing, dams and dredging close in on Peru’s river dolphins, study shows
- Amazon river dolphins in Peru are facing increasing threats from human activity, including fishing, proposed construction of dams, and dredging operations
- A study tracked the movements of dolphins in relation to fishing areas, dams and dredging sites, and found that 89% of their home range is subject to fishing activity.
- The research team observed that the dolphins in the study were, on average, located roughly 252 kilometers (157 miles) from the nearest proposed dam and 125 km (78 mi) from the closest proposed dredging site.
- The construction of the Amazon Waterway, aimed at improving navigability along waterways in Peru, involves dredging sites across four main rivers in the basin and could lead to ship collisions with dolphins, increased underwater noise, and habitat degradation.

‘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.

Dams on Brazil’s Jamanxim River: The advancing assault on the environment and Indigenous peoples in the Tapajós basin (commentary)
- Brazil’s electrical authorities have given the go-ahead for studies to prepare for building three large Amazonian dams that would flood Indigenous lands and protected areas for biodiversity.
- The decision shows that Brazil’s presidential administration is confident that the National Congress will approve the bill submitted by President Bolsonaro to open Indigenous lands to hydroelectric dams, and probably also allow dams to continue to be built without consulting impacted Indigenous peoples.
- The decision also shows that Brazil’s electrical authorities continue to ignore inconvenient information on climate change, the financial viability of Amazonian dams and their many social and environmental impacts, as well as the country’s better energy options.
- This text is translated and expanded from the author’s column on the Amazônia Real website. The views expressed are those of the author, not necessarily of Mongabay.

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.

Amazon to Alps: Swiss gold imports from Brazil tread a legal minefield
- The Brazilian Amazon is experiencing a new and potentially catastrophic gold rush driven by increased international demand for the precious metal.
- Over the past year, an estimated $1.2 billion worth of gold has been exported from Brazil to Switzerland, making it the second-largest export market for the country’s gold, after Canada. About a fifth of this gold comes from the Amazon, according to official figures.
- The scale of Brazil’s gold exports to Switzerland has raised concerns among environmental and transparency advocates that a significant quantity of illicit gold from the Amazon may be entering global supply chains.

You can’t see them to count them, but Amazonian manatees seem to be recovering
- Following intense commercial hunting from the 1930s to the 1950s, scientists and community members are seeing signs that the manatee population in the Amazon is growing.
- A study carried out in the Piagaçu-Purus Sustainable Development Reserve in the state of Amazonas shows large manatee populations nearby human communities, apparently co-existing in peace.
- Threats still remain in the form of poaching and accidental capture; calves that are orphaned or injured in these incidents are taken to rehabilitation centers, but these are low on funding and overcrowded.
- Monitoring of manatees returned to nature from these rehabilitation centers shows their work is paying off: one female being tracked since her return was later found to be pregnant.

New transport infrastructure is opening the Amazon to global commerce
- Tim Killeen provides an update on the state of the Amazon in his new book “A Perfect Storm in the Amazon Wilderness – Success and Failure in the Fight to save an Ecosystem of Critical Importance to the Planet.”
- The book provides an overview of the topics most relevant to the conservation of the Amazon’s biodiversity, ecosystem services and Indigenous cultures, as well as a description of the conventional and sustainable development models vying for space within the regional economy.
- Mongabay will publish excerpts from the Killeen’s book, which will be released by The White Horse Press in serial format over the course of the next year. In this second installment, we provide a section from Chapter Two: “Global Competition Drives Bulk Transport Systems”.
- This post is an except from a book. The views expressed are those of the author, not necessarily Mongabay.

Lessons from the 2021 Amazon flood (commentary)
- In June 2021, the annual flood season in the western and central Amazon reached record levels, and dramatic scenes of inundated homes, crops and city streets captured attention beyond Amazonia. This event provides lessons that must be learned.
- The high flood waters are explained by climatological forces that are expected to strengthen with projected global warming. Damaging floods represent just one of the predicted impacts in Amazônia under a warming climate.
- The administration of Brazilian President Jair Bolsonaro must change its current denialist positions on global warming and its policies that encourage deforestation. The Amazon forest must be maintained for many reasons in addition to its role in avoiding climate change.
- This post is a commentary. The views expressed are those of the author, not necessarily Mongabay.

Brazil’s Belo Monte Dam: Struggle for the Volta Grande enters a new phase (Commentary)
- A June 17th judicial decision suspends the permission granted on February 8th by Brazil’s environmental agency to allow even more water to be diverted from the Xingu River.
- Even without the additional diversion of water, the 130-km “Volta Grande” stretch receives insufficient water for its unique ecosystems and for its indigenous and traditional river-dwelling inhabitants.
- The new decision is at high risk of being overturned by means of Brazil’s “security suspension” laws that allow any ruling that would “damage” the economy to be reversed.
- The new decision could also be neutralized by the Bolsonaro government after technical studies are completed in December. It could also be overridden by a new interministerial group that is about to be decreed. The views expressed are those of the author, not necessarily Mongabay.

An Amazonian arapaima washed up in a Florida river. It didn’t swim there
- In February, Florida officials identified the body of an arapaima (Arapaima gigas) that had washed ashore from the Caloosahatchee River.
- An expert said the arapaima, a fish species endemic to the Amazon lowlands, had likely come from the pet trade.
- Live arapaimas are mainly brought into the U.S. for aquaculture, although a small number are also imported for the pet trade, another expert said.
- While arapaimas are not currently considered to be an invasive species, there are concerns they could become problematic in the future if enough end up in Florida’s waterways.

Brazil’s BR-319: Politicians capitalize on the Manaus oxygen crisis to promote a disastrous highway (Commentary)
- Brazil’s proposed reconstruction of the formerly abandoned BR-319 highway is notorious for its potential impact on Amazonian deforestation and indigenous peoples.
- The highway would connect Manaus, in the center of the Amazon, to the “arc of deforestation” in the southern part of the region, opening vast areas of forest to invasion.
- The current oxygen crisis in Manaus has been a windfall for politicians promoting the highway project, using the false argument that BR-319 is needed to supply oxygen to the city.
- This text is translated and expanded from the first author’s column on the Amazônia Real website. The views expressed are those of the authors, not necessarily Mongabay.

Traditional and Indigenous peoples ‘denounce’ planned Amazon railway
- The Ferrovia Paraense (FEPASA) railway if fully completed would run 1,312 kilometers (815 miles) from Santana do Araguaia in southern Pará, along the state’s eastern border, to the port city of Barcarena on the Amazon River. It could carry 80 million tons of mining ores and agribusiness commodities annually.
- In 2019, Pará state signed a memorandum of understanding with the China Communication Construction Company for a R$7 billion (US$1.4 billion) investment to fund the building of 492 kilometers (305 miles) of the railway, from Marabá to Barcarena. Construction is currently expected to start in 2021.
- But that plan could be delayed by resistance from Indigenous and traditional communities who say they’ve yet to be consulted on the project, as required by international law. FEPASA and Ferrogrão (Grainrail) will integrate Pará into Brazil’s vast rail network, greatly aiding export of Amazon commodities to China.
- A letter from the Amazon communities to Pará’s government accused it and its allies of “forcing on us a development model that does not represent us, that is imposing railways,… expelling people from their lands, ending our food security, destroying our people, destroying our cultures,… and killing our forests.”

Historical analysis: The Amazon’s mineral wealth — curse or blessing?
- Mining of gold and other precious metals in the Amazon fueled the Spanish and Portuguese colonial empires, while bringing misery and death to unknown hundreds of thousands of Indigenous people and African slaves, forced to work the mines.
- Modern industrial mining came to the Brazilian Amazon in the late 1940s as transnational firms began digging up and processing manganese, iron, bauxite, zinc, and other ores. Like the earlier iterations of mining, transnational firms, investors, and nations profited hugely, while local people saw little benefit.
- Brazil offered massive subsidies and tax incentives to attract transnational mining companies, and built giant public works projects, including mega-dams, transmission lines, and roads to provide energy and other services to the mines. Though the government offered little to disrupted traditional communities.
- All this came with extraordinary socio-environmental costs, as Brazilian Amazon deforestation soared, land and waterways were polluted, and Indigenous and riverine peoples were deprived of their traditional ways of life and lands, and suffered major public health repercussions. This mining trend continues today.

Multiplying Amazon river ports open new Brazil-to-China commodities routes
- Nearly 100 major industrial river ports have been built on the Brazilian Amazon’s major rivers over the past two decades. Many of the projects have been internationally financed and built by commodities companies with little government oversight.
- These ports have transformed the region, opening it to agribusiness and the export of commodities, especially soy, to China and the rest of the world. However, this boom in port infrastructure often came at the expense of the environment and traditional riverine communities.
- Today, more than 40 additional major river ports are planned in the Amazon biome on the Tapajós, Tocantins, Madeira and other rivers, projects again being pursued largely without taking cumulative socioenvironmental impacts into account.
- “What resources do these soy men bring to our city?” asked Manoel Munduruku, an Indigenous leader. “They only bring destruction.”

Why the health of the Amazon River matters to us all: An interview with Michael Goulding
- Like the rainforest which takes its name, the Amazon is the largest and most biodiverse river on the planet. The river and its tributaries are a critical thoroughfare for an area the size of the continental United States and function as a key source of food and livelihoods for millions of people. Yet despite its vastness and importance, the mighty Amazon is looking increasingly vulnerable due to human activities.
- Few people understand more about the Amazon’s ecology and the wider role it plays across the South American continent than Michael Goulding, an aquatic ecologist at the Wildlife Conservation Society (WCS) who has worked in the region since the 1970s studying issues ranging from the impact of hydroelectric dams to the epic migration of goliath catfishes. Goulding has written and co-authored some of the most definitive books and papers on the river, its resident species, and its ecological function.
- In recognition of his lifetime of advancing conservation efforts in the Amazon, the Field Museum today honored Goulding with the Parker/Gentry Award. The Award — named after ornithologist Theodore A. Parker III and botanist Alwyn Gentry who were killed in a plane crash during an aerial survey of an Ecuadorian cloud forest in 1993 — is given each year to “an outstanding individual, team or organization in the field of conservation biology whose efforts have had a significant impact on preserving the world’s natural heritage and whose actions and approach can serve as a model to others.”
- In a September 2020 interview ahead of the prize ceremony, Goulding spoke with Mongabay about his research and the current state of the Amazon.

Fishing for change: Local management of Amazon’s largest fish also empowers women
- High market demand led to declining numbers and a ban on arapaima fishing in the late 1990s, though illegal poaching for the black market continued.
- According to a recent paper, the co-management system that has helped these fish recover also provides new opportunities for women in fishing communities.
- Women working in co-management have newly independent incomes and receive previously unknown respect for their roles, though further work is needed to cement these gains.

Amazon poor go hungry as Brazil slashes social safety net, cuts forests: Study
- Living along the rivers of the Amazon rainforest, many imagine, would make for a sustainable diet packed full of freshwater fish. But a recent study finds this is not the case. A combination of interacting factors is now causing many poor families in riverine communities to go hungry.
- Researchers found that Amazon fish catch rates are naturally 73% lower in the highwater season. In the past, this lull was supplemented by hunting. But Brazilian deforestation, increased under former Pres. Michel Temer and now under Pres. Jair Bolsonaro, has replaced biodiverse forests with soy and other kinds of plantations.
- Add to this Bolsonaro’s and Temer’s rapid deconstruction of internationally-lauded social welfare programs, implemented by Presidents Lula and Rousseff and their Workers’ Party, which fed many riverine families when fish catches dropped.
- Figure in climate change too: its deep droughts harm forest and river diversity, while extreme floods keep stream levels high and fish catches low, and for longer. Now, COVID-19 has come to the Amazon, with food shopping trips made from rural riverine settlements to cities now requiring a serious element of risk.

Past and future tropical dams devastating to fish the world over: Study
- Most research on the ecological impacts of tropical dams does so one dam project at a time. But a new landmark study attempts to connect the dots globally by analyzing tropical dam impacts on freshwater river fish around the world.
- The research assembled data on the geographic range of 10,000 fish species, and checked those tropical species against the location of 40,000 existing dams and 3,700 dams that are either being built or planned for the near future.
- Scientists found that biodiversity hotspots including the Amazon, Congo, Salween and Mekong watersheds are likely to be hard hit, with river fragmentation potentially averaging between 25% and 40% due to hydropower expansion underway in the tropics.
- Dams harm fish ecology via river fragmentation, species migration prevention, reservoir and downstream deoxygenation, seasonal flow disruption, and blockage of nurturing sediments. Drastic sudden fish losses due to dams can also destroy the commercial and subsistence livelihoods of indigenous and traditional peoples.

Amazon’s giant South American river turtle holding its own, but risks abound
- The arrau, or giant South American River turtle (Podocnemis expansa), inhabits the Amazon and Orinoco rivers and their tributaries. A recent six nation survey assessed the health of populations across the region in Brazil, Colombia, Venezuela, Ecuador, Bolivia, and Peru.
- The species numbered in the tens of millions in the 19th century. Much reduced today, P. expansa is doing fairly well in river systems with conservation programs (the Tapajós, Guaporés, Foz do Amazonas, and Purus) and not so well in others (the Javaés and Baixo Rio Branco, and the Trombetas, even though it has monitoring).
- The study registered more than 147,000 females protected or monitored by 89 conservation initiatives and programs between 2012 and 2014. Out of that total, two thirds were in Brazil (109,400), followed by Bolivia (30,000), Peru (4,100), Colombia (2,400), Venezuela (1,000) and Ecuador (6).
- The greatest historical threat to the arrau stems from eggs and meat being popular delicacies, which has led to trafficking. Hydroelectric dams and large-scale mining operations also put the animals at risk — this includes mining noise impairing turtle communication. Climate change could be the biggest threat in the 21st century.

New species of orange-red praying mantis mimics a wasp
- From the Peruvian Amazon, researchers have described a new-to-science species of bright orange-red praying mantis that conspicuously mimics a wasp.
- The mantis mimics not only the bright coloration of many wasps, but also a wasp’s short, jerky movements. Such conspicuous mimicry of wasps is rare among mantises, which usually tend to resemble leaves or tree trunks, the researchers say in a new study.
- The researchers have named the praying mantis Vespamantoida wherleyi.

Six new catfish species, facial tentacles and all, described in Amazon
- Researchers have described six new species of catfish from the Amazon and Orinoco river basins in South America.
- All six species belong to the genus Ancistrus, and have tentacles sprouting from their faces, spines sticking out from their heads, and armor-like bony plates covering their bodies.
- The newly described fish were once plentiful but are now scarce, the researchers say, largely due to habitat destruction from agricultural expansion, deforestation and gold mining.

New study discovers 81 lost human settlements in the Amazon rainforest
- By looking at satellite images of a previously unexplored part of the Amazon in the Brazilian state of Mato Grosso, a team of archaeologists has identified 81 pre-Columbian human settlements.
- The team also found that the settlements weren’t near major rivers, but closer to smaller streams and creeks, challenging a commonly held belief that pre-Columbian people tended to live close to fertile floodplains of large rivers, leaving the rest of the forest relatively untouched.
- The researchers’ computer model predicted that the southern rim of the Amazon likely supported up to 1 million people in pre-Columbian times, a population that’s much larger than previous estimates.

Andes dams twice as numerous as thought are fragmenting the Amazon
- A new study identified 142 dams currently in operation or under construction in the Andes headwaters of the Amazon, twice the number previously estimated. An additional 160 are in the planning stages.
- If proposed Andes dams go ahead, sediment transport to the Amazon floodplains could cease, blocking freshwater fish migratory routes, disrupting flow and flood regimes, and threatening food security for downstream communities, impacting up to 30 million people.
- Most dams to date are on the tributary networks of Andean river main stems. But new dams are planned for five out of eight major Andean Amazon main stems, bringing connectivity reductions on the Marañón, Ucayali and Beni rivers of more than 50 percent; and on the Madre de Dios and Mamoré rivers of over 35 percent.
- Researchers conclude that proposed dams should be required to complete cumulative effects assessments at a basin-wide scale, and account for synergistic impacts of existing dams, utilizing the UN Watercourses Convention as a legal basis for international cooperation for sustainable water management between Amazon nations.

Extreme seasonal changes in Amazon river levels threaten forest conservation by indigenous people
- The Amazon has experienced intense floods and droughts for the past 10 years, a likely effect of climate change.
- Surveys taken of animals between 2009 and 2015 showed terrestrial mammal populations dropped by 95 percent during intense floods, whereas aquatic animals suffered dramatic declines during an extreme drought.
- Scientists fear these seasonal extremes will drive the Cocama people of Peru out of the forest, depriving it of its primary conservationists.

Amazonian manatee migration at risk from disruption by proposed dams
- Amazonian manatees (Trichechus inunguis) spend the high-water season feeding in flooded forests, but migrate to deeper permanent water bodies to see out the dry season.
- Researchers have found that as the dry season approaches, manatees time their migration out of the floodplain to avoid bottlenecks that would block their route, and doom them.
- But, the scientists warn, those bottlenecks will become far more common, and less predictable, if the hundreds of hydropower dams planned for the Amazon go forward.
- The dams, and the bottleneck problem they create, “generates profound concern for the conservation of manatees,” the scientists write.

Andes dams could threaten food security for millions in Amazon basin
- More than 275 hydroelectric projects are planned for the Amazon basin, the majority of which could be constructed in the Andes whose rivers supply over 90 percent of the basin’s sediments and over half its nutrients.
- A new study projects huge environmental costs for six of these dams, which together will retain 900 million tons of river sediment annually, reducing supplies of phosphorus and nitrogen, and threatening fish populations and soil quality downstream.
- Accumulating sediments upstream of dams are projected to release 10 million tons of carbon into the atmosphere each year, significantly contributing to global warming, and would contaminate waters and the aquatic life they support with mercury.
- The construction of these dams should be reconsidered to preserve food security and the livelihoods of millions of people in the Amazon Basin.

Brazil rejects oil company’s ‘Amazon Reef’ drilling bid
- Ibama, Brazil’s environmental regulator, today rejected Total SA’s environmental impact study for proposed drilling near the mouth of the Amazon.
- The environmental agency said the French energy giant failed to provide sufficient information on potential threats to wildlife and habitat.
- Environmentalists have been fighting the project.

HydroCalculator: new, free, online tool helps citizens assess dams
- With mega-dams planned globally, especially in the Amazon and Mekong, the Conservation Strategy Fund (CSF), an NGO, has developed a new free tool for evaluating a planned dam’s economic viability, greenhouse gas emissions and more.
- The HydroCalculator estimates the net economic value of a proposed dam, with and without the cost of greenhouse gas emissions factored in, number of years required before a project generates a profit, and years until net emissions become negative.
- The tool has been used by CSF, International Rivers, and a development bank and found to be very useful. Its forecasts have been tested against the economic viability and carbon emissions of existing dams, and found accurate.
- The HydroCalculator is meant for use by communities, researchers and activists who are often closed out of the technical dam planning process. It is available free online.

The “dolphin who became man”: will the boto survive the catfish trade?
- Fernando Trujillo has spent more than 30 years studying the Amazon’s elusive river dolphin, under threat by the fishing trade.
- Twelve years ago, locals started killing river dolphins to attract a lucrative fish to the carcasses, causing the animals to become endangered.
- A new film, A River Below, explores the story of the river dolphin and how it relates to the larger tale of the millions of people who call the Amazon home.

International action a must to stop irreversible harm of Amazon dams, say experts
- A study, published in Nature and led by Edgardo Latrubesse of the University of Texas at Austin, went beyond local impacts of individual dams to assess cumulative, basin-wide impacts that planned dams are bringing to 19 major Amazon sub-basins.
- The team developed a new metric: the Dam Environmental Vulnerability Index (DEVI) which includes assessments of basin integrity (vulnerability to land use change and erosion, etc.); fluvial dynamics (influence of sediment fluxes and flood pulses); and the extent of the river affected by dams.
- A score for each sub-basin from 0-100 was assigned, with higher values indicating greater vulnerability. The Madeira, Ucayali, Marañon and Tapajós sub-basins were found to be most threatened; all had DEVI totals higher than 60.
- The researchers say that a collective, cooperative, multi-country Amazon region assessment of dams and their cumulative impacts is urgently needed to get a handle on the true magnitude of the threat to the Amazon, as well as means to a solution.

Federal prosecutor in Brazil calls for suspension of licensing to drill near Amazon Reef
- The Prosecutor made the request in a formal recommendation sent to Brazil’s Institute of the Environment and Renewable Natural Resources (better known by its acronym, IBAMA), the environmental regulator responsible for environmental licensing in the country, on May 3.
- According to a statement released by the prosecutor’s office, the prospect of oil spills and other accidents that could damage the unique marine environment were not the only motives for the request. The statement also notes that a possible international conflict could be sparked should any environmental pollutants like oil be released into the ecosystem by the drilling activities.
- Some observers have suggested that it’s possible IBAMA is reluctant to make a decision one way or the other given the most recent scandal rocking a Brazilian government that has been in turmoil for months now.

Counterintuitive: Global hydropower boom will add to climate change
- For many years new hydropower dams were assumed to be zero greenhouse gas emitters. Now with 847 large (more than 100 MW) and 2,853 smaller (more than 1 MW) hydropower projects currently planned or under construction around the world, a new global study has shown that dam reservoirs are major greenhouse gas emitters.
- The study looked at the carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) emitted from 267 reservoirs across six continents. Globally, the researchers estimate that reservoirs contribute 1.3 percent of human-made greenhouse gas emissions, comparable to those from rice paddy cultivation or biomass burning.
- Reservoir emissions are not currently counted within the UN Intergovernmental Panel on Climate Change (UN IPCC) emissions assessments, but they should be, argue the researchers. In fact, countries are currently eligible under the UN’s Clean Development Mechanism (CDM) to receive carbon credits for newly built dams.
- The study raises the question as to whether hydropower should continue to be counted as green power or be eligible for UN CDM carbon credits.

Giant catfish clocks longest ever freshwater migration
- The dorado catfish uses the massive Amazon River as its roadway, beginning its journey at the river’s headwaters.
- It spawns in the far western Amazon, then drifts thousands of miles towards the estuary in the opposite direction.
- After two to three years in the estuary, the catfish makes its way back towards the headwaters through the Amazon floodplain.

First-ever underwater photos of newly discovered Amazon Reef have surfaced
- Extending from French Guiana to Maranhão State in northern Brazil, the Amazon Reef is a 9500-square-kilometer (or nearly 3,700-square-mile) system of corals, sponges, and rhodoliths (a colorful marine algae that resembles coral) located where the Amazon River meets the Atlantic Ocean — a region currently threatened by oil exploration activities.
- When the reef was discovered in April 2016, Fabiano Thompson of Brazil’s Universidade Federal de Pernambuco, who was part of the team of scientists who made the discovery, told Mongabay that “The oceanographic conditions (biogeochemistry and microbiology) of this system are unique, not found in other places of the planet.”
- The mouth of the Amazon River basin also provides valuable habitat for a range of species, including the American manatee, the yellow-spotted Amazon river turtle, dolphins, and giant river otters, which are listed as Endangered on the IUCN’s Red List.

Pre-Columbian Amazon settlement primarily ate fish — more sustainable?
- A study of the Central Amazon’s Hatahara settlement found that, circa 750-1230 AD, 76 percent of the animals people ate were fish and just 4 percent were mammal — very different from American / European prehistoric groups who ate more meat than fish.
- Thirty-seven different fish taxa were identified in the Hatahara samples, indicating that the people of that time were exploiting a much more diverse spectrum of food species than today, perhaps making their fishing and dietary habits more sustainable.
- One mystery: just one river turtle genus (Podocnemis) dominated the reptile diet, even though a diversity of turtle taxa can be found in the region.
- While these results are intriguing, more study is needed at more locations (inland, interfluvial and wetland settlements) to arrive at a regional understanding of available animal resources and the diets of Pre-Columbian Amazon settlements over time.

Health officials in Peru: oil spill cleanup workers face ‘poisoning and burns’
- In a preliminary report on the most recent crude oil spill in Peru’s northeastern Loreto region issued on June 25, the Health Network of the Dátem del Marañón province said that contract workers and local residents involved in cleanup efforts lacked special equipment.
- According to the report from the Health Network, which is part of the government health system, pumping of crude through the pipeline was halted at 10 p.m. on June 24, when Petroperú personnel arrived at the spill site. In press releases on June 25 and June 26, the company claimed pipeline operation had been suspended since February.
- If the crude reached the stream called Barranca Caño, it could affect 725 people in the community of Barranca. • If spilled oil reached the Marañón River, it could affect many more riverside communities downstream.

Amazon oil spill puts Peruvian communities at risk
- A new oil spill from the pipeline that carries crude oil from the northern Peruvian Amazon across the Andes Mountains to the Pacific coast has raised fears of yet more pollution.
- The spill is the third major one since January along the 40-year-old pipeline, where more than 20 have occurred in the past five years, according to government figures.
- The state-run oil company Petroperú operates the pipeline.

Watch video of an electric eel attack
- In a paper published in 1807, Prussian naturalist and explorer Alexander von Humboldt claimed to have observed South American electric eels exhibiting a behavior that has not been recorded since.
- Von Humboldt hired local fisherman to collect electric eels (Electrophorus electricus) for his research, which they did by a process he dubbed “fishing with horses.”
- According to Kenneth Catania, a scientist at Vanderbilt University in Tennessee, subsequent investigators have been skeptical of Von Humboldt’s account, mostly because no similar eel behavior had been observed in the intervening 200-plus years — until now.

Chinese dam builder eyeing major Amazon mega-dam contract
- China Three Gorges is a state-owned company preparing to make a bid on the 8,040 megawatt São Luiz de Tapajós hydropower plant in the Amazon’s Tapajós Basin. The company has a track record of human rights violations.
- The seven major planned Tapajós Basin dams wouldn’t just supply electricity. They could also reduce the cost of food exports from Brazil to China via the Tapajós-Teles Pires waterway by linking remote industrial farms in Mato Grosso state with the Amazon River, the seaport of Belem, and the proposed Nicaraguan Canal, which China plans to build in order to shorten shipping distances to Asia.
- Chinese companies are increasingly involved in Brazil’s effort to rapidly expand Amazon infrastructure, including dams, transmission lines, canals, roads, and port projects to open the forested interior to exploitation. The poor social and environmental record of both China and Brazil doesn’t bode well for the region’s indigenous people, ecosystems and wildlife, say critics.

Peruvian Amazon will get wetter and experience more severe floods, threatening wildlife
- A growing body of evidence shows that climate change is having a direct hydrological impact on the Amazon.
- A new study expands on these findings by examining climate change’s direct hydrological impact at the subregional scale, specifically in the Western Amazon.
- The increased flood pulse in the Peruvian Amazon basin could impact riverine and floodplain species like the taricaya turtle.

Munduruku building new alliances to fight Tapajós Basin dams in Amazon
- The Munduruku people are utilizing lessons learned in their failed fight against the Belo Monte dam on the Xingu River to battle newly proposed Tapajós Basin hydroelectric projects. Most significantly, they’ve learned there is strength in unity.
- The indigenous group has made a major appeal to the Brazilian government in opposition to the Tapajós dams, and also presented its case to the international environmental community at the Paris Climate Summit in December, 2015.
- The Munduruku are building strong partnerships with other indigenous groups, the quilombola (Amazonian descendants of fugitive slaves), impacted riverine communities, sympathetic city-dwellers, and environmental organizations.

Scientists sound alarm over hydropower’s impacts on tropical fish biodiversity
- As many as 450 new hydroelectric dams are already planned or in construction on the Amazon, Congo, and Mekong rivers.
- Without more careful assessment and holistic planning at the river basin level, the authors of the Science article say, species extinction and basin-wide declines in fisheries will accompany these new hydropower projects.
- Past research has shown that the carbon emissions from hydroelectric dams greatly exceeds official estimates, yet hydropower is often touted as “sustainable” development.

Brazilian environmental NGOs depend heavily on corporate money
- Is it a conflict-of-interest for environmental NGOs — which, in principle, fight for the preservation of nature — to receive contributions from mining companies, which by their very nature, can cause negative impacts on the environment?
- Between 2009 and 2014 Fundo Vale invested more than $30 million in environmental projects by 25 organizations in seven Amazonian states throughout Brazil.
- Environmental NGOs in Brazil should now focus on helping prevent new disasters, since there’s a risk of other Samarco dams breaking, says one observer.

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