topic: surveys

topic: surveys

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Sliver of hope as ‘mountain chicken’ frog shows resistance to deadly disease
- A Caribbean frog species known as the mountain chicken is on the brink of extinction due to the spread of an infectious fungal disease.
- However, a recent survey found that there were still 21 of these supersized frogs on the island of Dominica.
- Some of these frogs were found to have genes resistant to the fungal disease, raising hope for the species’ survival.

New Tree Tech: Cutting-edge drones give reforestation a helping hand
- This four-part Mongabay mini-series examines the latest technological solutions to help tree-planting projects achieve scale and long-term efficiency. Using these innovative approaches could be vital for meeting international targets to repair degraded ecosystems, sequester carbon, and restore biodiversity.
- Restoring hundreds of millions of hectares of lost and degraded forest worldwide will require a gigantic effort, a challenge made doubly hard by the fact that many sites are inaccessible by road, stopping manual replanting projects in their tracks.
- Manual planting is labor-intensive and slow. Drone seeding uses the latest in robotic technology to deliver seeds directly to where they’re needed. Drones can drop seeds along a predefined route, working together in a “swarm” to complete the task with a single human supervisor overseeing the process.
- Drone-dropped seed success rates are lower than for manually planted seedlings, but biotech solutions are helping. Specially designed pods encase the seeds in a tailored mix of nutrients to help them thrive. Drones are tech-intensive, and still available mostly in industrialized countries, but could one day help reseed forests worldwide.

New Tree Tech: Data-driven reforestation methods match trees to habitats
- This four-part Mongabay mini-series examines the latest technological solutions to help tree-planting projects achieve scale and long-term efficiency. Using these innovative approaches could be vital for meeting international targets to repair degraded ecosystems, sequester carbon, and restore biodiversity.
- To create healthy, diverse ecosystems, native tree species need to be identified that will thrive at each unique site within a habitat. But with more than 70,000 tree species worldwide, gathering and analyzing the data needed to understand species’ needs, habitat preferences and limitations is no small feat.
- Environmental niche models use data on climate, soil conditions and other characteristics within a species’ range to calculate a tree’s requirements. Artificial intelligence helps sort through vast data sets to make informed predictions about the species suited to an ecosystem, now and in a warmer future.
- Biotechnology company Spades uses laboratory testing of tissue samples from plant species to quantify what growing conditions a species can tolerate and to identify its optimum growing conditions.

New Tree Tech: AI, drones, satellites and sensors give reforestation a boost
- This four-part Mongabay mini-series examines the latest technological solutions to help tree-planting projects achieve scale and long-term efficiency. Using these innovative approaches could be vital for meeting international targets to repair degraded ecosystems, sequester carbon, and restore biodiversity.
- Current forest restoration efforts fall far short of international goals, and behind the hype lies a string of failed projects and unintended environmental consequences that have left a bad taste in the mouths of many investors, politicians and conservationists. Projects are often expensive and labor-intensive.
- Applying cutting-edge technology to the problem is helping: Advanced computer modeling and machine learning can aid tree-planting initiatives in identifying a diverse set of native species best able to thrive in unique local conditions, today and in a warming future.
- Drones are revolutionizing large-scale tree planting, especially in remote and inaccessible locations. Once trees are planted, satellite-based and on-site sensors can help monitor young forests — offering long-term scrutiny and protection often missing from traditional reforestation initiatives, and at a lower cost.

Camera trap study shows conservation efforts ‘are working’ on Costa Rica’s Osa Peninsula: Video
- The largest-ever camera trap study in Central America, on Costa Rica’s Osa Peninsula, has revealed how human disturbance affects where animals live and how they’re grouped.
- Protected areas and healthy forests held a greater diversity of animals as well as larger species like tapirs, jaguars and pumas, while places with more human activity had fewer species, which tended to be smaller, more common animals like opossums and agoutis.
- The camera trap study, begun in early 2018, shows many species have recovered completely in the forest reserves around Corcovado National Park, indicating that conservation efforts over the past 30 years have been largely effective.
- Local conservation groups are now focused on creating wilderness corridors so larger species like jaguars can rebound in neighboring forests.

DNA assessment confirms Gabon as last stronghold of forest elephants
- A new survey has found that there are more than 95,000 critically endangered forest elephants in Gabon, which is considered to be the last remaining stronghold for the species.
- The researchers came to this estimate after collecting elephant dung samples across Gabon and analyzing each sample’s genetic material.
- The survey found that forest elephants were present in about 90% of the country, in both protected and nonprotected areas.
- Forest elephants have been heavily poached in Gabon in the last couple of decades, with 25,000 killed in Gabon’s Minkébé National Park alone between 2004 and 2014.

Sexual harassment rife in Vietnam’s conservation sector, survey reveals
- A survey by WildAct, a Vietnamese conservation organization, found that 82.5% of respondents have experienced some form of sexual harassment in the last two years.
- Those surveyed said that they feel most vulnerable while working in the field, and particularly when alcohol is involved.
- In response, WildAct has called for other organizations and government agencies in the sector to prohibit alcohol consumption during fieldwork.

Sharks nearby? A bottle of seawater can hold the answer, study says
- A new study has been able to identify the presence of blacktip sharks in the waters of Terra Ceia Bay in Florida through eDNA detection in water samples.
- The water samples contained more blacktip eDNA in the spring and summer months, which is when the species uses the bay as a nursery, and less eDNA in the fall, which is when the sharks start to leave the area.
- While the current technique indicates if sharks are present in the water, it isn’t sensitive enough to provide an accurate population count.

Ornithologists discover more rare hornbills than thought on Philippine island
- A new study of the endemic and rare Visayan tarictic hornbill (Penelopides panini) on Negros Island in the Philippines shows that the population of the endangered bird may be double the previous estimate of the IUCN.
- A 2001 assessment by the IUCN estimated the total number of tarictic hornbills on the islands of Negros and Panay at 1,800; this new study finds nearly 3,600 hornbills in Negros alone.
- Hornbills are among the most threatened bird species in the Philippines; a subspecies of the taritic hornbill was the first first hornbill in the country to be declared extinct, in 2013, after it disappeared from the island of Ticao.
- The study is the first to establish an existing population of tarictic hornbills for the island of Negros and the first to identify bird populations in each remaining forest area on the island.

An armada of turtles, caught on drone cam, flocks to the Great Barrier Reef
- New drone video shows thousands of endangered green turtles swimming ashore to Raine Island on the outer edges of the Great Barrier Reef.
- Researchers captured this video to help survey the nesting turtle population, and in the process demonstrated that this technique is more effective than manually counting turtles from boats. They recorded 64,000 turtles nesting on Raine Island this season.
- There’s been an increase in the number of nesting green turtles around the world, including Raine Island, likely due to conservation efforts and fishing moratoriums.
- Team members at the Raine Island Recovery Project are working to restore the island’s beaches to ensure that green turtles can continue to safely nest there.

Key cetacean site in Philippines sees drop in dolphin, whale sightings
- A recent survey has confirmed a declining trend in sightings of dolphins and whales in the Tañon Strait in the central Philippines, a waterway declared an Important Marine Mammal Area by the IUCN.
- The strait is a migratory route for at least 11 cetacean species, including the vulnerable Gray’s spinner dolphin and the endangered false killer whale, but four surveys carried out since 1999 have shown a sharp decline in population and species sightings.
- One bright spot in the latest survey was the sighting of rose-bellied dwarf spinner dolphins, only the second time that the species has ever been spotted in Philippine waters.
- The strait is one of the country’s busiest sea lanes, encountering heavy fishing and tourism activities, which researchers say may be a factor for the downward trend. They call for further collaboration to enact stringent measures on fishing and tourism activities to protect the area.

Snow leopard population overestimated in Nepal? DNA study suggests it may be
- Researchers conducted a large-scale survey of potential snow leopard habitat in Nepal to re-estimate the species’ population density using the non-invasive technique of collecting environmental DNA from scat samples combined with standard genetic analyses.
- This method enabled the researchers to sample a larger, more representative, area than many previous studies, often conducted in prime leopard habitats; they also found that they could obtain reliable DNA from scat samples.
- Previous studies on which conservation policies have been based may have over-estimated the big cat’s population. The researchers say similar studies are needed to more accurately estimate the population of snow leopards in Nepal and 11 other range countries.

Tests show multi-rotor UAVs can improve cetacean behavioral studies
- Researchers assessing the utility of small, multi-rotor unmanned aerial vehicles (UAVs) to survey and study humpback whales found that video data collected from a UAV improved upon data recorded by an expert observer from a research vessel, a standard technique.
- The observer mischaracterized certain behaviors, primarily socializing and nurturing, as other activities, such as traveling or resting, that the aerial viewpoint of the UAV captured clearly, even when the animals were below the surface.
- The whales did not show changes in behavior when the UAV approached or remained present at 30 meters above them.
- Their results suggest that small UAVs add value to cetacean behavioral research as a non-invasive research tool that can capture information that is otherwise difficult to detect from the angle and distance of a ship or shore observer.

New toolkit identifies multiple species from environmental DNA
- Researchers have developed a DNA analysis toolkit designed to speed the identification of the multiple species in a biological community by analyzing environmental DNA from a sample of water or soil.
- To confirm the presence of a species at a site, the tool compares its genetic barcode (short DNA sequence) to barcodes of known species in one of several reference databases.
- The toolkit’s advantage is its ability to quickly process many barcode sequences, at multiple analysis locations on the gene, that enable it to identify the species of the DNA sequences of many organisms at the same time.

Conservation tech prize with invasive species focus announces finalists
- The Con X Tech Prize announced its second round will fund 20 finalists, selected from 150 applications, each with $3,500 to create their first prototypes of designs that use technology to address a conservation challenge.
- Seven of the 20 teams focused their designs on reducing impacts from invasive species, while the others addressed a range of conservation issues, from wildlife trafficking to acoustic monitoring to capturing freshwater plastic waste in locally-built bamboo traps.
- Conservation X Labs (CXL), which offers the prize, says the process provides winners with very early-stage funding, a rare commodity, and recognition of external approval, each of which has potential to motivate finalists and translate into further funding.
- Finalists can also compete for a grand prize of $20,000 and product support from CXL.

Film that fish: Stereo-video speeds surveys of marine fish communities
- Researchers use underwater visual surveys to assess the sizes of fish in marine communities and their associated habitats, but diver-based data collection is time-consuming and requires expertise, and results may vary among different data collectors.
- A multinational research team recently published the first guide to help researchers using diver-operated stereo-video methods (stereo-DOVs) to standardize surveys of fish assemblages (species and their abundances) and their associated habitat.
- The video provides a permanent, shareable record of each survey transect, including the species and numbers of fish seen, while the stereo option allows researchers to measure fish using overlapping images.
- The guide provides information on appropriate equipment; designing a stereo‐DOV if needed; operating it during underwater studies; processing the video data after collection; and analyzing fish behavior, population features and habitat in the resulting video.

Sponges supply DNA for new method of monitoring aquatic biodiversity
- Tracking environmental DNA (eDNA) is fast becoming a popular method of monitoring aquatic biodiversity, but current methods are expensive and cumbersome.
- Filter-feeding sponges can act as natural sieves to collect and concentrate eDNA from seawater.
- Using sponge samples collected from the Antarctic and the Mediterranean Sea, researchers identified 31 organisms, including fish, penguins, and seals, clearly separated by location.
- Although the method is still a proof of concept, it may lead to the development of simpler, less expensive technologies for aquatic eDNA collection.

Angola pledges $60m to fund landmine clearance in national parks
- The Angolan government has announced a $60 million commitment to clear landmines in Luengue-Luiana and Mavinga national parks in the country’s southeast.
- The region is part of the Kavango-Zambezi Transfrontier Conservation Area — home to incredible natural biodiversity, but also one of the most heavily mined regions of Angola.
- International funding for landmine clearance has fallen by 80 percent over the last 10 years, and without new funding Angola will miss its target of clearing all landmines by 2025.
- The HALO Trust, a demining NGO, and the Angolan government hope that clearance of landmines will stimulate conservation in southeastern Angola and provide alternative livelihoods such as ecotourism to alleviate poverty and diversify the country’s economy away from oil.

Models, maps, and citizen scientists working to save the Great Barrier Reef
- As global warming drives more events that impact coral reefs, managing the Great Barrier Reef’s resilience demands comprehensive and detailed mapping of the reef bed.
- Available surveys and maps with geographically referenced field data have been limited and fragmented.
- A diverse research team recently demonstrated a successful approach, applying statistics to image data to build predictive models, integrate diverse datasets on reef conditions, and provide a comprehensive map of the Reef that informs reef management decisions.

‘Landscape of fearlessness’: bushbuck emboldened following top-predator decline in Mozambique
- Bushbuck in Mozambique’s Gorongosa National Park have become increasingly fearless in their foraging habits, changing from foraging exclusively in woodland areas to braving open floodplains.
- Following years of civil war, populations of large herbivores and carnivores in Gorongosa declined by over 90 percent, with some top predators completely extirpated.
- Researchers from Princeton University conducted experiments using state-of-the-art equipment to establish whether the bushbucks’ use of floodplains for foraging was due to the decline in predation threat.
- Following experimentally simulated predation events, bushbuck significantly increased their use of tree cover, indicating that the reintroduction of top predators would restore a ‘landscape of fear’.

‘Judas’ snakes lead scientists on a high-tech Easter egg hunt for pythons
- Scientists are exploring various technologies to address the spread of highly invasive Burmese pythons, which have devastated native mammal and bird populations across much of southern Florida.
- Researchers who recently captured a large pregnant Burmese python did so using the “Judas” technique: the radio-tagging of adult pythons that will approach others of the opposite sex during the breeding season, “betraying” them to the research teams.
- More recently, separate research teams have trialed the use of environmental DNA (eDNA) to determine the spatial distribution, range limits, and expansion rates of Burmese pythons in the region. They found python eDNA within a wildlife refuge, indicating that the invaded area extends further north than previously thought and that pythons are likely resident there.

Combining artificial intelligence and citizen science to improve wildlife surveys
- Migratory species play a key role in the health of the Serengeti ecosystem in East Africa, but monitoring their populations is a time- and labor-intensive task.
- Scientists studying these wildebeest populations compared expert observer counts of aerial imagery to corresponding counts by both volunteer citizen scientists and deep learning algorithms.
- Both novel methods were able to produce accurate wildebeest counts from the images with minor modifications, the algorithms doing so faster than humans.
- Use of automated object detection algorithms requires prior “training” with specific data sets, which in this case came from the volunteer counts, suggesting that the two methods are both useful and complementary.

AI and drone-based imagery improve power to survey cryptic animals
- Developing effective management strategies for threatened species like koalas requires knowing where and how many are in a target area, but surveying cryptic low-density animals can lead to variable estimates.
- A recent study has introduced a new automated method for wildlife detection using a pair of object detection machine learning algorithms to detect animals’ heat signatures in drone-derived thermal imaging.
- By understanding error rates of different survey methods and including appropriate technology, the researchers say, wildlife monitoring can become more efficient and effective.

A snapshot of camera traps reveals user frustrations and hopes
- A team of camera trapping experts surveyed researchers and conservation professionals to identify limitations to their successful use of remote cameras, assess their wish list of technological developments, and predict what next-generation camera trapping will look like.
- Their recently published study revealed that cost, theft, vulnerability of the cameras to environmental conditions, and several ongoing technical issues may be limiting the effectiveness of this popular technology in providing the utility the users seek.
- The survey respondents offered numerous predictions for next-generation camera trapping, including solar and lithium-ion power sources, a wider range of sensors, and software-driven automation.

Drones with thermal cameras help detect camouflaged species
- Scientists tested the capacity of small drones equipped with thermal cameras to survey European nightjar nests in areas where construction or logging is planned.
- Nightjars use camouflage and cryptic behavior to avoid predation, which makes them difficult to observe on the ground and avoid disturbing, as required by U.K. law. Finding a faster, more cost-effective survey method to detect their presence could help forestry and construction managers comply with regulations more efficiently.
- The scientists say that the drone-thermal camera combination would be suitable for surveying other open-country wildlife, and could be aided by automated analysis of the thermal signatures of target species.

Top camera trapping stories of 2018
- Camera traps, remotely installed cameras triggered by motion or heat of a passing person or animal, have helped research projects document the occurrence of species, photograph cryptic and nocturnal animals, or describe a vertebrate community in a given area.
- Camera trapping studies are addressing new research and management questions, including document rare events, assess population dynamics, detect poachers, and involve rural landowners in monitoring.
- And with projects generating ever-larger image data sets, they are using volunteers and, more recently, artificial intelligence to analyse the information.

10 ways conservation tech shifted into auto in 2018
- Conservation scientists are increasingly automating their research and monitoring work, to make their analyses faster and more consistent; moreover, machine learning algorithms and neural networks constantly improve as they process additional information.
- Pattern recognition detects species by their appearance or calls; quantifies changes in vegetation from satellite images; tracks movements by fishing ships on the high seas.
- Automating even part of the analysis process, such as eliminating images with no animals, substantially reduces processing time and cost.
- Automated recognition of target objects requires a reference database: the species and objects used to create the algorithm determine the universe of species and objects the system will then be able to identify.

Drone 3D models help assess risk of turtle nesting beaches to sea level rise
- In a recent study, researchers took drone-based images to map the structure of sea turtle nesting beaches in northern Cyprus to determine their susceptibility to flooding from sea level rise.
- Automated drone flights with on-board cameras can record sequences of photos of the surface below, which can be merged in a process called photogrammetry to construct three-dimensional models of the survey area.
- The fast pace of innovation and versatility of drones can improve sea turtle conservation efforts through cheaper, more efficient monitoring.

Hobby-grade drones can monitor marine animals beneath the surface
- Researchers in The Bahamas have been testing just how good drone videos can be for estimating the abundance and distribution of large marine animals found just beneath the ocean’s surface.
- They flew aerial surveys using commercial-grade drones along six tidal creeks facing high and low human impact, to count sharks, rays, and sea turtles — groups that are both threatened and difficult to monitor. The findings from multiple sites suggest that shoreline development negatively affects the abundance and distribution of various marine species.
- The study also showed that using lower-cost consumer drones equipped with video cameras could help researchers effectively and non-invasively estimate abundance of these marine megafauna in shallow waters and compare data across sites.

In pursuit of the rare bird that vanishes for half the year
- Until recently, the habits and habitats of the Bengal florican remained a mystery: males were easily seen in their seasonally flooded grassland habitat during the breeding season but effectively disappeared for half the year.
- Researchers in India and Nepal combined field surveys, satellite telemetry and remote sensing to model the distribution and assess the critically endangered bird’s movements, survival and home ranges.
- After years of not knowing the birds’ non-breeding whereabouts, the study found that Bengal floricans leave their protected, seasonally flooded breeding areas in favor of unprotected low-intensity agricultural fields and other upland grasslands during their non-breeding season.

Speed trap: Cameras help defuse human-cheetah conflict in Botswana
- Increases in human-wildlife conflict could undermine Botswana’s conservation efforts, with farmers in some areas shooting carnivores preventatively to protect their livestock.
- Camera traps have helped researchers in Botswanan farmland to monitor cheetahs and other elusive or low-density predators without habituating them to human presence, a key feature in areas where farmers believe they will kill livestock.
- Communicating with local farmers and sharing camera-trap data on cheetahs’ territorial behavior and long-distance travel can help show farmers there may be far fewer individuals than they realize — “the cheetah seen today on one farm may be the same one seen [earlier] several farms away.”

AI simplifies statewide study of leopards in south India
- A six-year study of leopards in the wildlife-rich southern Indian state of Karnataka, using grids of motion-sensor camera traps across the state, suggests the big cats are thriving in a variety of habitats and land uses.
- The researchers’ use of machine-learning algorithms significantly reduced the workload needed to identify 363 individual leopards from the sample’s 1.5 million camera-trap images. The figure indicates there are an estimated 2,500 leopards living in Karnataka.
- Although a forest department official said the state was unlikely to expand its protected forests in the foreseeable future, the researchers said such a policy was necessary for leopard conservation, stressing that the proximity of natural landscapes to agricultural fields allows leopards to use those unprotected areas.

How porpoise sounds helped researchers test acoustic devices
- A team of scientists used playbacks of recorded and artificial porpoise clicks to develop an adaptable method to assess the area in which acoustic monitoring devices can reliably detect these sounds
- Researchers need to know how far away they can expect acoustic data loggers to capture the sounds of target animals to estimate the density of those animals from the recordings.
- The cetacean data loggers could reliably detect the click signals up to nearly 200 meters (656 feet), which translated to a circular sampling area of 11 hectares (27 acres) per device.
- The data logger algorithms could correctly classify the clicks as porpoise sounds only up to 72 meters (236 feet), representing a reliable sampling areas of just 1.6 hectares (4 acres) that could be used to estimate the density of a specific species, an issue affecting researchers working with more than one echolocating species.

The Osa Camera Trap Network: Uniting people to monitor biodiversity
- The Osa Camera Trap Network monitors big cats and their prey on public and private lands across Costa Rica’s Osa Peninsula.
- Concern about connectivity for apex predators between Corcovado National Park and mainland Costa Rica has encouraged the participation of a diverse cadre of stakeholders that has broadened the scale of the project.
- Clear communication, together with a few photos of resident jaguars, have allowed the network’s 23 institutions and communities to install and maintain more than 200 cameras providing the baseline data needed for long-term monitoring of the area’s mammals.

For an Amazon tribe, phone cameras shine a light on their wildlife
- Armed with smartphone cameras, teams of indigenous Matsés people have partnered with North American herpetologists to inventory the reptiles and amphibians of their territory along the remote divide between Peru and Brazil.
- The easy-to-use cameras are robust, small enough to carry while climbing a tree or crossing a stream, store thousands of images, and can be recharged with low-cost solar panels.
- The teams have built a database of more than 2,000 photos, including several new species, and they have expanded the known distributions of other species.
- The long-term project complements rapid ecological assessments of a poorly studied region and empowers Matsés elders to pass on their knowledge of the region’s forests to both their families and the outside world.

Decoding the language of bats key to their conservation
- Uruguayan scientists have developed a new artificial intelligence algorithm and reference library of bat ultrasound pulses to enable the use of acoustic monitoring of this understudied regional fauna.
- Bats in the Southern Cone are threatened by wind turbines, but their species and sonar emissions differ from other areas, requiring the scientists to build their own acoustic library and predictive algorithms.
- The scientists are collaborating with wind farm companies and international academics to help expand the reference library and improve the algorithm’s accuracy and speed.

Tracking elephant movements reveals transboundary wildlife corridors
- Data from satellite tracking tags on 120 elephants in southern Africa have identified a suite of wildlife movement corridors across five southern African countries, suggesting the importance of cross-border coordination.
- Wide-ranging movements of elephants include dispersal from northern Botswana north into Angola and south toward the Kalahari Desert.
- Research findings have suggested that open and unimpeded movement corridors can help reduce conflict with human residents while blocked corridors can push elephants and other wildlife into new developments or villages, resulting in increased conflict.

Researchers weed out a way to identify plants using environmental DNA
- Scientists have developed genetic markers to help identify plant species using environmental DNA (eDNA), the traces of biological material (pollen, spores, skin, scales, etc.) that contains an organism’s unique genetic material. Unlike animal DNA, no universal plant DNA markers exist that can be applied across many plant species and still effectively identify specimens to the species level.
- Researchers focused on one diverse aquatic plant group, pondweeds, which function as effective indicators of water conditions and quality, to make their markers as effective as possible in identifying species from water samples.
- The team detected five of the pondweed species in samples from a research reserve in Ontario, three of which were new to the reserve, demonstrating that eDNA analysis can detect plant species in water samples, including those not known from earlier studies to be present.

Automating drone-based wildlife surveys saves time and money, study finds
- Reserve managers have begun to survey wildlife in savanna ecosystems by analyzing thousands of images captured using unmanned aerial vehicles (UAVs, or drones), a time-consuming process.
- A research team has developed machine learning models that analyze such aerial images and automatically identify those images most likely to contain animals, which, according to the authors, is usually a small fraction of the total number of images taken during a UAV survey effort.
- The new algorithms reduced the number of images that needed human verification to less than one-third of that using earlier models, and they highlight the patterns in those images that are most likely to be animals, making the technique useful for image-based surveys of large landscapes with animals in relatively few images.

Cities worldwide use photo app technology to compete in nature observation challenge
- The third-annual City Nature Challenge takes place this weekend, April 27-30, 2018, giving nature lovers in cities around the globe a chance to compete against other cities to see who can make the most observations and find the most species of local plants and animals.
- Residents and visitors from nearly 70 cities will use their smartphones and the iNaturalist app to share photos of their findings over the 4-day period; experts will verify the identifications in early May.
- Organizers hope the event will connect more people to their local urban biodiversity and uncover threatened and invasive species in new locations, to assist local resource managers.

eDNA may offer an early warning signal for deadly frog pathogen
- Scientists sampling water for the environmental DNA of fish had the unique opportunity to test the potential of using eDNA to detect the presence of a fungus deadly to frogs while the animals are still healthy.
- The Batrachochytrium dendrobatidis (Bd, or chytrid) fungus has decimated frog populations across the world and is very difficult to detect until the frogs of a newly infected population start to die.
- The research suggests that eDNA could help managers predict which lakes and other water bodies harbor the chytrid fungus and take action to protect surviving amphibian populations.

In blood-sucking leeches, scientists find a genetic snapshot of local wildlife
- Scientists have identified mammals present at sites in Asia by examining the DNA in the blood sucked by leeches.
- They found that the nearly 750 Haemadipsa (blood-sucking) leeches stored the DNA of a diversity of other species, from mice to monkeys and birds, not to mention humans and domestic animals.
- Collecting terrestrial leeches is fast, cheap, and easy (they come to you!), and they feed on a broad spectrum of mammals, enabling them to serve as cost-effective tools for determining the presence of even scarce and elusive species.

Drone photography allows scientists to measure marine mammals without a catch
- Scientists tested the accuracy of determining marine mammal size by analyzing aerial photography taken from a small drone as a less costly, less stressful alternative to manual capture and measurement.
- To be precise in their measurements of leopard seals, the researchers took overhead photographs at three different altitudes, and three scientists measured the photographs of each seal independently.
- They found that the new aerial photography method produces results comparable to standard manual methods.

Coral reef monitoring takes to the skies: drone-mounted hyperspectral cameras help scientists assess health of coral reefs
- Hyperspectral images taken from cameras on unmanned aerial vehicles (UAVs) are helping scientists survey the composition and health of coral reefs under the water.
- These images capture information from visible (light) and non-visible sections of the electromagnetic spectrum thereby offering information the human eye can’t see.
- When paired with UAVs or satellites, hyperspectral images allow researchers to survey the reef habitats–including coral, sand, and algae–over large areas as well as monitor the health of individual corals.

Drones enable fast, accurate wildlife counts, study shows
- Unmanned aerial vehicles (UAVs) have great potential for surveying wildlife, especially species that assemble in large numbers and that are easily disturbed by human presence.
- Scientists creatively combined high-tech UAVs and computer-vision algorithms with rubber ducks to assess the potential of aerial imagery to count seabirds relative to traditional survey methods.
- They found that both human and semi-automated computer counts of colony-nesting birds from UAV-derived images were more accurate and less variable than counts made by observers on the ground.
- Combining UAV-derived imagery with artificial intelligence can help scientists more accurately estimate population sizes with less variability.

From rescue to research: training detection dogs for conservation
- Conservation and research teams have used detection dogs to locate illegal wildlife products, weapons, invasive species, and, particularly, wildlife scat–a non-invasive way to collect dietary, hormonal, and genetic information contained in fecal material.
- Training detection dogs builds on their obsessive drive to play by associating a target substance with the play reward.
- Handlers are instrumental in interpreting a dog’s behavior and ensuring it searches efficiently and effectively for its targets.
- Detection dogs are a cost-effective way to collect wildlife data, though the costs of international transport may limit their use by smaller conservation groups.

Dogs, dung, and DNA: mapping multi-species corridors to conserve threatened carnivores
- Researchers enlisted dog sniffing power to locate the scat of five threatened carnivores across an increasingly fragmented Atlantic Forest landscape and identified the animals’ species through genetic analysis.
- The ability to collect and distinguish scat of jaguars, pumas, ocelots, oncillas, and bush dogs enabled the scientists to develop spatial models for species-specific movement corridors that connect the region’s protected areas.
- The researchers combined these species presence models with habitat and human factors to map and propose effective least-cost, multi-species biological corridors.

Camera trapping in the trees
- Sets of remote cameras placed in trees can detect a wide range of diurnal and nocturnal arboreal vertebrates and help assess species presence relative to environmental factors.
- This relatively cost-effective, non-invasive monitoring technology requires effort to design and set up, but it can function for months with minimal oversight or maintenance.
- Three studies suggest solutions to various challenges—including leaf-triggered photos, high humidity, and insect infestation—facing research teams interested in surveying and monitoring vertebrate communities in the canopy.

Soil research aided by citizen scientists, boots and all
- Researchers in England tested a novel approach to detect pathogens in the environment, combining citizen science and lab analysis.
- They related the presence of Campylobacter bacteria, consistently detected through boot socks worn by volunteers walking outdoors, to environmental variables and probable sources.
- Their findings highlight the potential for using field data collected by citizen scientists to assess the presence and transmission of pathogens and other particles in the environment.

Acoustic monitoring: mapping ecosystems by animal calls
- Studies that confirm the presence of particular species are needed to understand and conserve them appropriately, but such studies are often costly, time-consuming and thus few and far between.
- Researchers from the University of Puerto Rico are deploying monitoring stations in the field, which record and process animal sounds to automate the collection and classification of audio data to determine species presence and compare animal communities.
- While the technology is limited to animals that call and requires some human expertise in identifying these sounds, it can provide detailed, long-term data for monitoring animal communities and informing wildlife management strategies

EGI: Filling in the gaps in law enforcement for the online wildlife trade
- Enforcement Gaps Interface (EGI) uses a computational algorithm to mine hundreds of commercial sites for ads potentially containing illegal wildlife and wildlife products.
- EGI aims to help law enforcement agencies, retailers and nongovernmental organizations reduce and ultimately eliminate rampant online wildlife trafficking.
- EGI’s creators are further developing it to incorporate more languages and image recognition into its searches.

Searching for sawfish following the clues of environmental DNA
- Environmental DNA (eDNA) is genetic material extracted directly from environmental samples, such as soil, water and air, rather than from an evident biological source. eDNA analysis is revolutionizing species detection and genetic analyses for conservation, management and research.
- Researchers in northern Australia are using eDNA to locate and help conserve critically endangered largetooth sawfish.
- eDNA technology is rapidly evolving; it could become completely field-based and be used to determine abundance and applied to meta-genomic ecosystem surveys to predict spatial and temporal biodiversity patterns.

Leopards and landmines: Post-war carnivore research in Sri Lanka
- Researchers recently completed the first leopard study in Wilpattu National Park after its closure during the Sri Lankan Civil War.
- Camera traps and scat analysis are helping biologists learn more about the ecology, diet and distribution of leopards across Sri Lanka.
- Survey results show that the leopard population appears robust within the core of Wilpattu National Park, but further research in other parts of the country is required to better understand this endangered subspecies.

Understanding the ghost of the mountain
- Researchers are learning more about the biology, ethology and conservation status of elusive snow leopards, thanks to advances in satellite telemetry, camera traps, fecal genetics and GIS.
- New, albeit disputed, estimates suggest the snow leopard population is greater than previously thought, but the species is under accelerating threat from poaching, overhunting of prey, retaliatory killing by herders, mining, roads and climate change.
- The protection of the snow leopard, its prey and its highland habitat must remain global priorities to ensure this big cat’s long-term conservation.

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