This Week in Biodiversity News – 1st May 2023

Research

An abundance of urban honeybees adversely impacts wild bee populations. By comparing bee population data collected from sites around the island of Montreal in 2013 to data collected at the same sites in 2020, a new study argues that the rapid growth in urban honeybee-keeping in recent years may be negatively impacting nearby wild bee populations. The researchers believe that small bees with limited foraging ranges may be particularly at risk. As honeybees are not native to the region, they are in competition with the almost 180 other species for resources.

New research has found that Juan Fernandez fur seals can tolerate high levels of metallic pollutants such as cadmium without suffering any ill effects. Scientists believe this ability could aid medical research, with researchers finding high levels of silicon in their bones which may be offsetting the impacts of this cadmium.

Extinction risk

The habitat for Asian elephants has shrunk by almost two-thirds. Around 3.3 million sq km of habitat has been lost since 1700, according to a new study. China has lost 94% of its suitable elephant habitat, while India has lost 86% and Bangladesh 72%. Thailand, Vietnam and the Indonesian island of Sumatra have lost half of their suitable habitat. The study noted a trend of converting landscapes to more heavily human-dominated spaces but did not look into specific reasons for the habitat loss in each country.

Asian elephants by Mike Prince via Flickr

The red list, published in the Journal of Bryology, has revealed Britain’s extinction-threatened mosses and liverworts. The study found that 19% of bryophyte species are at risk, with at least four having already become extinct in Great Britain. After assessing all 1,097 species (1,019 with sufficient information available), 191 are threatened with extinction, 59 critically endangered, 52 endangered and 80 vulnerable. Of these, 73% are mosses and 27% are liverworts.

Climate change

A report has found that the UK is failing to honour its net zero farming pledges. The projected emissions drop for agriculture and land use are 58% below the target of the original net zero plan. This gap is comparable to the emissions of the entire UK building sector. Additionally, the total projected emissions benefits from tree planting, from now until 2037, are 85% lower than previously claimed, with the planting rates currently half of what are needed to be in line with net zero.

Spain is bracing for a record April temperature of 39°C. The government has warned people to take precautions as they face droughts and temperatures 7-11°C above average for this time of year. The country has been in drought since January last year. Last year, Spain experienced a series of heat waves, which were accompanied by forest fires that burned hundreds of thousands of hectares.

Wildlife crime

The illegal killings of birds of prey has led the Peak District national park to end an agreement between grouse moor managers and bird conservationists. The partnership, which was set up in 2011, sought to restore bird of prey populations across the park. Due to the continued illegal persecution targeting some of these species, the park is now looking for alternative ways to ensure birds of prey have a future in the area.

Buzzard by caroline legg via Flickr
Policy

The Welsh Government has announced £11m for conservation projects that help Wales’ endangered wildlife. Nine new large and 17 medium projects will benefit from the last round of this Nature Networks funding package, helping to strengthen the resilience of Wales’ seas, forests and grasslands. One species to benefit is the Atlantic wild salmon, which experts say could disappear from Welsh rivers within the next two decades.

Brazil’s government has recognised six Indigenous lands. Out of 733 Indigenous territories, 496 are now recognised by the state, with the remaining 237 in different stages of the demarcation procedure. The current government is aiming to demarcate the highest number of Indigenous lands possible, not only because it is their right, but also to reach zero deforestation by 2030. Between 1990 and 2020, only 1% of native vegetation area was lost in lands demarcated or waiting demarcation. In comparision, private areas lost 20.6%.

New discoveries
Grey-headed lapwing by Sai Adikarla via Flickr

A grey-headed lapwing has been spotted in Northumberland, UK. The species, which is normally found in India, China and Japan was spotted in England this week. It is thought to be the first sighting of the wader in the UK, with only five recorded sightings of the bird in Europe and western Asia in recent years.

This Week in Biodiversity News – 17th April 2023

Conservation

Artificial nests raise hopes that golden eagles will be able to breed in southern Scotland. Two eyries were placed high in trees on a private estate near where three young eagles have been spotted. More than 17 privately owned estates support the South of Scotland Golden Eagle project and a series of translocations have increased the area’s population from a few pairs to 38. This is the highest number recorded for three centuries.

Golden Eagle by Richard Bartz via Wikimedia Commons
Extinction risk

Hong Kong Bird Watching Society has reported an alarming decline in the black-faced spoonbill population. The local population has fallen below 300 for the first time in eight years, despite global numbers reaching a record high at 6,603. The society director Yu Yat-tung stated that more time is needed to find out why the population has dwindled.

New data shows that 48% of UK bird species declined between 2015 and 2020. Woodland birds were shown to be faring the worst, with a 12% decline. The Environment Act passed into law in 2021, requiring a halt in species decline by 2030 but campaigners believe radical changes to government policy are needed if this target is going to be met.

The number of critically endangered fish species in Australia has doubled. Nine new species are now thought to be on the brink of extinction with calls for urgent action to control invasive freshwater species. Invasive trout have caused the ranges of many of these fish to be reduced to extremely small areas, with many only having one population left.

Climate change

The UK’s insulation scheme would take 300 years to meet government targets to reduce fuel poverty, according to critics. The Great British Insulation Scheme aims to insulate 300,000 homes a year over the next three years but does not go far enough to reach the 19 million homes that need better insulation. Home insulation grants are thought to be a crucial part of the government’s plan to have a net-zero economy by 2050.

Global ocean surface temperatures are at the highest since records began. The average temperature is at around 21.1C since the start of April, with the previous highest being 21C in 2016. This rise in temperature will likely lead to more extreme weather and marine storms, as well as polar ice caps melting and coral bleaching.

Coral bleaching in Hawaii by Caitlin Seaview Survey via Wikimedia Commons
Wildlife crime

Roughly 1,000 pounds of illegally caught shark was seized in Texas. A recent study shows that humans are to blame for the 70% decline in sharks and rays, and that overfishing must be stopped or they could go extinct. Texas banned the trade of shark fins in 2015 but the state has long been a hot spot for shark fishing and trade.

Policy

The slowing of deforestation following a Brazilian forest policy review was less effective on private lands than in all conservation areas, according to a new study. The last policy review in 2012 prevented the restoration of 14.6 million hectares of agricultural land, which had a carbon sequestration potential of 2.4 gigatonnes.

This Week in Biodiversity News – 5th April 2023

Conservation

Ospreys are being reintroduced to Ireland, more than 200 years after they were declared extinct. The species has not bred in Ireland since the 1700s but, after years of lobbying, the National Parks and Wildlife Service has agreed to reintroduce Osprey this year. A report from last year showed that 25% of Irish birds are in severe decline, with 37% more showing moderate decline. There are now calls to reintroduce more birds that are now extinct in Ireland.

Osprey by Sunny via Flickr

A family of beavers has been released on an estate in Staffordshire to help boost biodiversity. The individuals have been placed in one of the largest enclosures in the UK on the 725-acre estate. Beavers were hunted to extinction in England, and it is thought that this is the first time the species has swum in Staffordshire for more than 400 years.

Extinction risk

People are being warned to leave capercailies alone, as this endangered bird stops breeding when disturbed. This species, whose Scottish population consists of only 542 individuals, is on the brink of extinction. It is a criminal offence to disturb capercallie while they are lekking (where males gather to display and fight for the attention of females), nesting or raising young. A birdwatcher was even arrested and charged last year for disturbing them.

Climate change

The hot, dry summer of 2022 has had a major impact on some UK butterfly species. The new study was conducted by Butterfly Conservation, the UK Centre for Ecology & Hydrology, British Trust for Ornithology and Joint Nature Conservation Committee. It showed that species such as the green-veined white, small white, small tortoiseshell, peacock and brimstone experienced greatly reduced numbers following the widespread drought. This is thought to be due to insufficient food for the caterpillars as food plants withered and died in the drought conditions.

Brimstone by hedera.baltica via Flickr

The net zero strategy shows that the UK will miss its 2030 emissions cuts targets. According to the government, its policies will only achieve 92% of cuts required, but experts think that is a ‘very generous reading’. The UK has a legally binding requirement to reach net zero emissions by 2050, and it commited under the Paris agreement to cut emissions by 68% by 2030 (compared with 1990 levels). The new strategy is a mix of wins and losses: it requires car manufacturers to ensure 22% of their car sales and 10% of van sales must be of electric vehicles by 2024, but does not lift the ban on onshore windfarms and contains little reference to agriculture.

Policy

A new multi-million pound grant scheme has been launched by Natural England to help rare and threatened species, such as water voles, curlews and natterjack toads. The Species Recovery Programme Capital Grant Scheme will provide projects with £18 million over two years, delivering targeted conservation action through the creation and improvement of specific wildlife habitats, conservation translocation, research and creating solutions to address species decline.

Curlew by Ralf Hüsges via Flickr
New discoveries

Scientists have found the deepest fish ever recorded at 8,300 metres in the Izu-Ogasawara trench near Japan. A team made up of researchers from Western Australia and Tokyo captured footage of the animal, an unknown snailfish species belonging to the genus Pseudoliparis. Two other snailfish, Pseudoliparis belyaevi, were also filmed at a depth of 8,022m. At this depth, the pressure is 800 times greater than at the surface; snailfish are adapted to live at these high pressures by not having swim bladders and they have a gelatinous layer instead of scales.

A newly described leafless orchid in Sri Lanka has been named. The species was found in a lowland wet zone forest and has been named Gastrodia pushparaga, after a precious yellow sapphire commonly extracted from the same district. This is the third Gestrodia species found in Sri Lanka, the other two being discovered in 1906 and 2020.

This Week in Biodiversity News – 20th March 2023

Conservation

An invasive snail is helping an endangered bird in Florida. The snail kite is bouncing back from the threat of extinction, due to the abundance of a new food source. Their original food source, a local apple snail, suffered severe declines due to droughts in the early 2000s. This new non-native island apple snail is five times bigger than the original species; continued monitoring of the snail kite has shown that their bills are getting bigger to accommodate this larger food source.

Snail kite by Andy Morffew via Flickr

The Yangtze finless porpoise population has increased for the first time. The latest census conducted by the Chinese Ministry of Agriculture and Rural Affairs shows that the population has increased by over 23 percent in the past five years, from 1,012 to 1,249. This is seen as evidence that the conservation effort for the world’s only freshwater porpoise is effective.

Wiltshire Wildlife Trust has purchased Great Wood, an ancient woodland in North Wiltshire. The 71 hectare site will be transformed into a nature reserve, a move that will protect the area from being sold off to multiple landowners or commercially managed. Only 3% of Wiltshire is ancient woodland, with only 8% covered by woodland.

Extinction risk

Humans are altering the diet of the Tasmanian devil. Human-modified landscapes may be narrowing the diet of this species and accelerating their decline, according to a new study. Devils living in human-impacted areas, such as cleared land, fed on mainly medium-sized mammals. However, in undisturbed habitats, their diet was broader, including smaller animals such as birds.

Tasmanian Devil by Steven Penton via Flickr
Climate change

There is a drought risk to multiple English regions after a dry February. England had its driest February for 30 years, with some rivers at their lowest on record. Scientists are warning that South West England and East Anglia are at risk of drought unless ‘unseasonably sustained rainfall’ occurs in the coming months.

Global fresh water demand will outstrip supply by 40% by 2030, according to experts. The new report calls for governments to stop subsidising the extraction and overuse of water, and for industries from mining to manufacturing to overhaul any wasteful practices. The report has set out seven key recommendations, including scaling up investment in water management and pricing water properly.

Scientists have delivered the ‘final warning’ on the climate crisis. The final part of the sixth assessment report by the Intergovernmental Panel on Climate Change (IPCC) was set out on Monday. This comprehensive review of the knowledge of the climate crisis took eight years to compile and has one clear message: act now, or it will be too late. The report, called the synthesis report, will most likely be the last assessment while the world has a chance of limiting global temperature rises to 1.5°C.

Policy

Ecological emergency has been declared by councillors in South Tyneside, UK. This is part of efforts to boost the biodiversity in the borough, while also safeguarding the natural environment. This declaration has set out 11 pledges which will increase ‘eco-literacy’, develop ‘member champions’ for biodiversity and ensure that council strategic decisions and policies will consider and maximise nature recovery.

This Week in Biodiversity News – 6th March 2023

Conservation

Australia plans to make an area the size of Germany into a marine park in the Southern Ocean. The area around the Macquarie Island will strengthen the protections currently in place, helping to manage the important ecosystem for millions of seabirds, seals and penguins. The proposal will be open for public consultation, with the plan allowing for the continuation of the small Patagonian toothfish fishery. The expansion of the marine park will increase the amount of protected area in Australia’s oceans to 48.2%.

A historic ocean treaty has been agreed upon after a decade of talks. The High Seas Treaty will protect 30% of international waters by 2030. Currently, only 1.2% of these waters are protected, yet all countries have a right to fish, ship and do research in international waters. The new treaty will establish marine protected areas in international waters limiting how much fishing can take place, as well as restrictions on shipping lane routes and activities such as deep-sea mining.

Climate change

Rising sea temperatures have caused sea urchin populations to plummet in West Australia. A number of molluscs and sea urchins on Rottnest Island have seen declines in numbers of up to 90% between 2007 and 2021. Researchers from Curtin University believe rising sea temperatures are to blame. Rader Reef and Cape Vlamingh are designated as sanctuary zones, with the highest level of protection from human activity, but this still isn’t enough to protect against the catastrophic decline in biodiversity.

Rottnest Island by brettanomyces via Flickr
Extinction risk

A newly described snake is being threatened by mining in Ecuador and Panama. The DiCaprio’s snake is one of five new species of snail-eating snakes from the upper Amazon Rainforest in Ecuador and the Choco-Darien forests of Panama. Both areas have seen an increase in illegal gold mining along rivers and streams during the COVID-19 pandemic which, along with deforestation, is threatening a number of species in these habitats.

Researchers have found 26 Australian species that have recovered from the brink of extinction. They reviewed all the animals that have been listed as threatened under Australia’s Environment Protection and Biodiversity Conservation Act between 2000 and 2022 and discovered that 15 mammals, eight birds, four frogs and one fish no longer met the criteria to be listed as threatened under the Act. This number includes three that had been legitimately delisted during this time. The researchers attributed this recovery to targeted management. However, far more species have become threatened than recovered over the past 20 years.

Policy

The Irish government has announced new measures to tackle pollution, biodiversity loss and climate impacts on Ireland’s seas. The programme of measures will consist of a broad range of actions including expanding Ireland’s Marine Protected Areas to cover 30% of their marine area by 2030, updating guidance on reducing underwater noise pollution and providing environmental guidance for offshore renewable energy.

Canada’s environment minister is planning to use a rare emergency order to protect the last of an endangered owl species. The species is in an area in British Columbia where old-growth forest has been slated for further clearcutting. The northen spotted owl faces serious threats to its population, as only one wild-born northern spotted owl remains, with two others, born as part of a breeding programme, recently released into the wild. Before industrial logging, there were nearly 1,000 northern spotted owls in British Columbia.

Northern spotted owl by Kyle Sullivan via Bureau of Land Management Oregon and Washington via Flickr
New discoveries

A species of ‘ethereal fairy lantern’ has been rediscovered in Japan after being thought extinct for 30 years. The flowering plant in the genus Thismia lives entirely underground except for its lantern-like flowers, rising above the soil during the wet season. Resembling mushrooms, one such species was originally discovered from a single specimen in 1992, but after scientists could not locate another and its habitat was destroyed, it was presumed extinct. A new individual has now been located 30 kilometres away from the original.

This Week in Biodiversity News – 13th February 2023

Climate change

Climate breakdown could cause British apples to die out, to be replaced by varieties from New Zealand and Japan. British apples are struggling as there is not enough time for the trees to lie dormant in winter and conserve energy for growing fruit. Traditional apple trees need about 1,000 hours below 6°C but above freezing. The Met Office announced in January that 2022 had been the sixth warmest year on record.

Cox’s Orange Pippin by David Wright via Flickr
Habitat destruction

Half of the wetlands in Europe, the continental US and China have been lost in the past 300 years, according to a new study. Researchers found that some areas, including the UK, Ireland and Germany, have lost more than 75%. In total, an area the size of India has disappeared globally. More than 60% of these losses were driven by drainage for growing crops on uplands. Other reasons included the conversion to paddy fields, the creation of urban areas and peat extraction.

According to a report by The Wildlife Trusts, HS2 Ltd is “undervaluing” the amount of damage it is doing to the environment while overvaluing the benefits of its compensation measures. Phase 1, covering 140 miles between London and the West Midlands, will cause 7.9 times more nature loss than accounted for, with Phase 2a causing around 3.6 times more. The report found watercourses, ponds and trees that have been missed out from the data produced by the firm, along with problems with how nature is being valued. Well-established, tree-lined and species-rich hedgerows were given lower nature value than the new hedgerows that HS2 Ltd is going to plant.

Erosion of beaches along the south-east coast of Australia is having a significant effect on local biodiversity. Some beaches in the area are becoming increasingly vulnerable to coastal erosion caused by successive years of La Niña events. A study monitoring the shoreline between Noosa’s Main Beach and Coolum found that the shoreline has retreated by about 20 metres, while the sand dunes have receded between 7 and 10m and have been vertically eroded by 2–3m.

Extinction Risk

Sea turtles are under threat from warming seas and hotter beaches, according to new research. Australian scientists have suggested that marine turtles are unlikely to be able to change their nesting behaviour enough to mitigate the effects of higher sea surface temperatures. As the sex ratio of turtle hatchlings is determined by the temperature of the nests, warmer beaches will yield more females, impacting population dynamics. Higher temperatures have also been linked to lower hatchling success rates.

Sea turtles by Dawn Childs/USGS via NPS Climate Change Response via Flickr

More than 33% of America’s biodiversity is at risk of disappearing, including 40% of animals and 34% of plants. A new report by NatureServe found that 41% of American ecosystems are at risk of collapse, with California, Texas and southeastern states the most threatened. The main threats include habitat degradation and land conversion, invasive species, damming and polluting of rivers, and climate change.

The lynx is facing extinction in France, as the population is down to 150 adults at most. DNA tests have shown that the cats’ genetic diversity is so low that they will become locally extinct within the next 30 years unless there is urgent intervention. The species is under pressure from habitat loss, inbreeding, poaching and traffic collisions. The tests have shown that the population has a level of diversity equivalent to only 38 animals, and there are now calls to either introduce more lynxes from healthier groups or replace poached lynxes and exchange orphaned lynx cubs being cared for at wildlife rescue centres in various regions.

Pollution

Emissions of the five most harmful air pollutants dropped in 2018 across the European Union, including nitrogen oxides and ammonia. The new European Environment Agency report for 1990-2018 showed an overall trend of steady but slow progress by EU member states in reducing emissions of the main air pollutants present in Europe. The five most harmful air pollutants dropped between 1.6-6.7% between 2017 and 2018.

Policy

Costa Rica has announced an all-out ban on hammerhead shark fishing. Including smooth hammerhead, scalloped hammerhead and great hammerhead, this executive decree prohibits the capture, transportation, storage or sale of hammerhead sharks or their byproducts. Experts are saying this should have occurred in 2013 when hammerhead sharks were listed under CITES, as the animals were hunted for their fins and populations have declined by around 90% since then.

Scalloped Hammerhead Shark by Kris-Mikael Krister via Flickr
New discoveries

A new silent frog species has been described, found in Tanzania’s Ukaguru Mountains. Researchers discovered this species during an expedition in search of another species, the Churamiti maridadi tree toad. While frogs usually use sound to attract a mate, the males of this new species have tiny spines on their throats. Nearly 25% of all vertebrates in the Ukaguru Mountains are found nowhere else, meaning conservation of the area is essential.

Camphibian NEWTCAM Project, in partnership with LIST (updated)

NHBS is working with the Luxembourg Institute of Science and Technology (LIST), as part of the Camphibian Project, to help develop a novel approach that will improve amphibian monitoring using NEWTCAM, an underwater camera device. The Camphibian Project continues to improve and test the NEWTCAM to assess its value for biodiversity monitoring.

The problem

Amphibian species are facing global decline, due to a range of factors including climate change, habitat loss, infectious disease, and environmental contamination. As an important species group showing steep declines worldwide, amphibians are frequently used as biodiversity indicators, but our ability to document changes in amphibian population sizes and community structures is limited. Current methods for surveying and monitoring newts, such as eDNA, bottle trapping, netting and torching, are either unable to produce accurate population size estimates or very invasive, frequently risking the health of individuals. Furthermore, these methods can be weather dependant, as certain conditions, such as heavy rain or temperatures above or below optimal levels lead to surveys being called off. Reliable survey and monitoring methods are essential for assessing changes in populations and ecological communities, data which feed into environmental research and policy support.

The concept

The automation of field observations has been improved in recent years with the development of camera traps, but to date there has been no viable aquatic camera trap. The NEWTCAM (originally developed as the Newtrap) is an open underwater tunnel with an integrated camera and lighting system that automatically captures high resolution time series of standardised images of aquatic animals. The NEWTCAM can be left unattended in the water for several days because the animals are free to enter and exit the NEWTCAM and are not captured or handled in any way, greatly improving survey effort, detection rates, and reducing stress on the animals.

In common with all camera traps the NEWTCAM produces 1000s of images and/or videos. These are managed with the NEWTCAM Manager (a separate web application) which supports all the steps of image processing by:

  • Enabling the centralisation of data from multiple NEWTCAM devices, survey sites, projects, and even organisations.
  • The annotation of images and videos by species, stage, gender, and behaviour. The data can then be used as a reference image library to train a new AI algorithm or processed with an appropriate existing identification algorithm (for more information see RCNN).

In future, existing AI algorithms (e.g. for newts in North Western Europe) will be integrated into NEWTCAM Manager, enabling the analysis of data sets.

Standardisation

The NEWTCAM takes standardised images from a predetermined angle, for example the underside of a newt (or other target species), from which the species, sex, development stage, body measurements, and individual identification (if individual variation exists, such as the irregular pattern of dark spots on the underside of great crested newts) can be determined. This data can then be used to provide important information about the presence, population size and dynamics of the species or communities of interest.

Benefits when compared to traditional survey methods:
  •  Reduced disturbance to sensitive habitats because the NEWTCAM is placed in situ once, but can then record data for weeks or months.
  •  Zero handling of individuals because the NEWTCAM is an open tunnel that allows individuals to enter and exit at will.
  •  Reduced number of site visits compared to bottle trapping, netting, and torching.
  •  Easy deployment in the field meaning that more sites can be surveyed over a longer period and with a higher temporal resolution than when using standard methods.
  •  Standardised field observations – the NEWTCAM will enable the development of improved AI-based processing methods and their centralisation to produce well-formatted databases for large-scale and global change studies because the cameras produce images with the same size, resolution, background, specimen position and illumination.
  •  The potential to provide accurate population estimates through the identification of individuals (where individuating marking exist).
  •  Greater freedom to place the NEWTCAM at different sites and depths throughout the water body.
  •  Surveys can be carried out in adverse weather conditions including heat waves and heavy rain.
  •  The orientation of the NEWTCAM can be changed so that different target species can be filmed from different angles.
The Camphibian Project

The Camphibian Project – has two main aims, to improve the functionality, durability and versatility of the NEWTCAM and to assess its value as a user-friendly freshwater wildlife monitoring method.

These aims will be accomplished through a programme of technological development work at LISTs laboratories and the NHBS workshop followed by a series of field experiments conducted by LIST and early user field trials. These experiments will assess:

  • Whether NEWTCAM offers a reliable and robust approach for detecting and estimating the population size and dynamics of a wide range of amphibian species.
  • The NEWTCAMs ability to detect a range of different species and life stages in a wide variety of habitats.
  • Whether the data produced by the NEWTCAM is sufficient to produce reliable population estimates for species with individuating patterns at the larval stage.

As the NEWTCAM is developed, there will be opportunities for ecologists to test the equipment and the NEWTCAM will be displayed at conferences and events (details to be confirmed). If you would like to find out more, please sign up to our mailing list.
NHBS is providing funding alongside Fonds National de la Recherche Luxembourg, and LIST (Luxembourg Institute of Science and Technology).

NHBS is providing funding alongside Fonds National de la Recherche Luxembourg and LIST (Luxembourg Institute of Science and Technology).

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This Week in Biodiversity News – 30th January 2023

Deforestation

Human activity has degraded more than a third of the Amazon rainforest. New research has shown that up to 38% of the forest has been affected by human actions, with the four key disturbances being fire, selective logging (including illegal practices), extreme drought and edge effects (the changes that occur in areas next to deforested areas). The level of degradation is far greater than previously understood and not only has consequences for the climate crisis and biodiversity loss but also Indigenous and non-Indigenous communities.

More extreme thunderstorms resulting from climate change are likely to cause a greater number and frequency of ‘windthrow’ events in the Amazon rainforest, where trees are uprooted or damaged due to severe weather. These fallen trees then decompose on the forest floor which has a huge impact on the carbon budget and carbon dynamics of the rainforest. Scientists are now working on better models which will help them to understand how forests will fare under different emissions scenarios.

Amazon rainforest by Jay via Flickr
Pollution

England’s coast faces multiple threats from dredging, sewage and pollution. The Environment Agency has warned that dredging will likely increase around the coast, with pollution and sewage adding pressures to coastal ecosystems. In 2021, three quarters of shellfish waters around England failed to meet aspirational standards for environmental protection, with dredging and pollution coming under increased scrutiny following mass die-offs of crabs and lobsters. The findings from the EA report published last week suggest that dredging was unlikely to be the cause but this has been criticised by some scientists. There are now calls for stronger targets to cut pollution, a ban on destructive fishing in marine protected areas, and stricter penalties for sewage discharges.

The UK government has allowed ’emergency’ use of a banned bee-harming pesticide for the third year in a row, just days after the EU tightens protections against emergency deregulations. The neonicotinoid thiamethoxam is lethal to bees, and the authorisation comes just a month after the UK government advocated for a global reduction target at COP15. UK guidance states that emergency applications should not be granted more than once and the UK Expert Committee on Pesticides once again advised against allowing thiamethoxam to be used, but was again ignored by the government.

A new study has found plastic in the scat of fishing cats living near Colombo, Sri Lanka. The plastics varied in size from microplastics to larger macroplastics and were believed to have been ingested via their prey. Only six of the 276 samples taken were found to contain plastics but this is still a concern for the vulnerable species. Further research is needed to assess any potential health impacts on the species.

Shortfin Mako Shark by Mark Conlin via Wikimedia Commons
Extinction Risk

An investigation has found that endangered sharks are being sold as ‘flake’ in South Australian fish and chip shops. According to the study, less than a third of servings meet seafood labelling standards. Out of 96 fish and chip shops and 10 fresh fish retailers, only 29 servings were actually gummy shark, one of only two shark species that Australian Fish Names Standard says can be sold as flake in Australia. Three servings were narrownose smooth-hound, a critically endangered shark; two were the endangered shortfin mako; one was smooth hammerhead, considered vulnerable; 19 were the critically endangered school shark; and 15 servings were whiskery shark.

Gillnets in Bangladesh are a major threat to both the Ganga River dolphin and the Irrawaddy dolphin. Entanglement in nets, along with boat propeller strikes, killed 130 Ganga River dolphins between 2007 and 2016. Since 2002, the manufacture, marketing, import, hoarding, carrying, possession or use of any kind of gillnet is prohibited but they are still widely used by fishers due to their effectiveness at catching large numbers of fish. There are currently only 2,000 Ganga River dolphins and 6,000 Irrawaddy dolphins left in Bangladesh.

Research

A study has suggested that reaching net zero greenhouse gas emissions in England and Wales by 2050 could lead to an extra 2 million years of life. Many of the proposed policies in the UK will reduce harmful environmental factors such as air pollution, as well as encouraging healthier behaviours such as a balanced diet and exercise. These policies, if implemented, would result in significant reductions in mortality across English and Welsh populations. Retrofitting homes with insulation, reducing red meat consumption, replacing car journeys with walking or cycling, and reducing air pollution could also lead to people living with fewer health conditions.

Dwarf eelgrass by Duartefrade via Wikimedia Commons
Conservation

Seagrass restoration trails have begun in Cornwall. The first round of planting for the project, taking place in the River Fal, has been completed, and is the first attempt by Cornwall Wildlife Trust to restore seagrass meadows. A group of volunteers spent more than 120 hours collecting over 4,000 seeds last summer and planting them. It is hoped that this project will expand to an area 10 times the size used in the first round of trails.

This Week in Biodiversity News – 16th January 2023

Pollution

Global NGOs are joining forces to accelerate the campaign to end plastic pollution. The World Economic Forum’s Global Plastic Action Partnership (GPAP), the Ellen MacArthur Foundation’s Plastics Initiative and waste charity WRAP are planning to work together to deliver a circular economy for plastics. This supports international negotiations to deliver a new Plastics Treaty, which began last November and aims to crack down on plastic waste by mid-2025.

Citizen science

Buglife, a conservation charity, is appealing for the public’s help to find a rare beetle in the woodlands of Devon and Cornwall. The blue ground beetle (Carabus intricatus) has only been seen at 15 sites across the south-west of England and south Wales. The species was identified at two new sites on Dartmoor in 2022 but the charity would like people to help find out if it is living in more locations. Buglife is asking for people to take pictures if they think they have spotted the beetle, and to send them to the Dartmoor Blue Ground Beetle project online.

The blue ground beetle by Berard DUPONT via Flickr
Research

A chemical that is used in the production of toilet paper and ‘forever chemicals’ has been found in the bodies of orcas. A team of scientists have analysed tissue samples from six southern resident orcas and six Bigg’s whales that were stranded along the coast of British Columbia from 2006 to 2018. The team, made up of scientists from The Institute for the Ocean and Fisheries, British Columbia Ministry of Agriculture and Food, and Fisheries and Oceans Canada, found that the chemical accounted for 46% of the total pollutants identified. This toxic substance can interact with the nervous system and influence cognitive function.

A new study has suggested that more than three million years of evolutionary history has been lost in Madagascar due to extinctions. Urgent conservation action is needed to prevent another wave of extinctions as, if all currently threatened mammals also go extinct, it is predicted that it would take more than 20 million years for new species to evolve naturally to replace those lost.

The golden-crowned sifaka, a critically endangered mammal found in northeast Madagascar. Image by Alex Chiang via Flickr.
Conservation

Beavers are set to be released into Hampshire for the first time in 400 years. A pair will be released at Ewhurst Park estate near Basingstoke, which is being restored for nature and sustainable food production. Beavers were given legal protection in England in 2021, formally recognising them as native wildlife. This keystone species will help to create new wetlands on the estate, which will provide new habitats for dozens of bird and insect species.

Over 5,000 fish from endangered species have been released into the Mekong and Tonle Sap rivers in Cambodia. The ceremony was held by the Cambodian government and the Wonders of the Mekong project at the Chaktomuk River in Phnom Penh, which is connected to both of the larger rivers. The species released included Mekong giant catfish (Pangasianodon gigas), giant barbs (Catlocarpio siamensis) and striped catfish (Pangasianodon hypophthalmus). It is hoped that they will reproduce and increase the rare fish populations in both rivers.

Dartmoor ponies by Tony Hisgett via Flickr

A new herd of Dartmoor ponies have been brought in to boost the population on Thetford heathland in Norfolk. Fifteen ponies have joined the 119 others that currently live in the area and will help to deliver conservation grazing programmes across the nature reserves, including East Wretham Heath. These selective grazers will create a rich variety of different heights and species of vegetation, helping birds such as nightjars and stone curlews.

Extinction risks

The scientists who led the research into the mass die-off of crabs and lobsters along the north-east coast of England say they have not been questioned by the panel investigating the disaster. The review panel is due to send its findings to ministers this week, but they have also been excluded from examining government processes as part of its inquiry. This is raising questions about the potential limitations and reliability of the forthcoming results.

Queensland, Australia, has been urged to end its shark nets and drum lines programme, as scientists call these lethal methods “ineffective” and inhumane. In 2019, Humane Society International won a legal challenge to stop the use of lethal drum lines in the Great Barrier Reef park, but as of 1st December 2022, the Queensland government has only spent $505,000 on replacing the old drum lines with ‘Smart’ catch-and-alert ones. Last year, 15 humpback whales were caught in shark nets, as Queensland does not remove them during whale migration season.

This Week in Biodiversity News – 2nd January 2023

Climate change

UK wildlife was ‘devastated’ by extreme weather in the UK. The National Trust’s annual audit revealed that 2022 was a dire year for animals, including amphibians, mammals, birds and insects. Due to strong storms, heatwaves and cold snaps, many species and habitats were effected. The wildfires during the hot summer destroyed many heathland areas in Cornwall, Devon and Dorset, impacting rare species such as sand lizards and smooth snakes. This potential ‘new norm’ of extreme weather is creating major challenges for UK biodiversity.

2022 will be the warmest year on record in the UK, according to the Met Office. Provisional figures hint that the annual average temperature from last year will exceed the previous record set in 2014. The 10 warmest years on record have all occurred since 2003, with temperature trends showing that the UK is hotter since we began burning fossil fuels and releasing greenhouse gases into the atmosphere. This new record is showing that climate change is having a real impact.

Unseasonably warm weather is expected this January, with at least eight countries across Europe experiencing record high temperatures. The warmest January day on record was recorded in Poland, Denmark, the Czech Republic, the Netherlands, Belarus, Lithuania and Latvia. The Czech Republic saw temperatures of 19.6°C, compared with the usual average of 3°C.

Extinction risks
Polar bear by Martin Lopatka via Flickr

Polar bears are vanishing from the ‘polar bear capital of the world’ in Canada. The western Hudson Bay is considered a stronghold for this species but government research is showing that there has been a dramatic decline in numbers. Every five years, researchers count the number of bears in the area and extrapolate population trends, with the last count in 2021 estimating 618 bears, down from 842 five years earlier. The reveal showed significant declines in adult females and subadult bears between 2011 and 2021, possibly due to displacements to neighbouring regions or hunting. The bears’ sea-ice habitat has also been disappearing, with the far north of the world warming up to four times faster than the rest of the planet.

New discoveries

A pink coloured variant of the Monotropastrum humile plant, native to East and Southeast Asia, has been discovered to actually be a new species. A 20-year study determined how exactly these plants different, with specimens collected throughout Japan, Taiwan and Vietnam. Originially, there was thought to be only one species in this genus in the world, so this new discovery has deepened our understanding of the plants in the Monotropastrum genus. As this newly recognised species is rare and therefore presumably endangered, the information from this study will hopefully be used to inform conservation efforts.

Research

Researchers have found a ‘shark graveyard’ at the bottom of the ocean in one of Australia’s newest marine parks. Fossilised teeth dating back to an ancient ancestor of the megalodon were found in samples taken from this site, along with 750 teeth representing a number of other predatory species. These were a mix of modern and ancient sharks and will help scientists better understand both past and present life in the ocean.

Conservation
Eastern Quoll by sontag1 via Flickr

Eastern quolls have been released into the Australian bush in New South Wales, over sixty years after they were declared extinct on the mainland. The 10 individuals were released into a NSW nature reserve, bolstering an insurance population of quolls. The Barrington population is the largest on the mainland and was established through the Tasmanian Quoll Program. Special fences have been erected to keep out cats, foxes and pigs, as feral invasive predators are thought to have been the cause of the initial population decimation.