This Week in Biodiversity News – 19th December 2022

Conservation

The province of Limburg in the Netherlands will be restoring the habitat of the critically endangered garden dormouse over the next four years. In the Netherlands, this species (Eliomys quercinus) is only found in the southern Limburg area, although it is found across other parts of Europe, including France, Spain, Portugal, Italy and areas of south eastern Europe. The species relies on contiguous hedges and bushes, avoiding open fields, with a food preference for blackberries, common hazel, elderberries, gooseberries and red currants. Habitat loss and fragmentation are thought to have been the cause of the decline in both their abundance and range.

The garden dormouse (Eliomys quercinus) by Arno Laurent via Wikipedia Commons
Extinction risks

There have been a number of news stories relating to the mass die-offs of crustaceans off the North East and Yorkshire coasts, the first of which occurred in October 2021. Fishers and campaigners are protesting against further developments on the River Tee, where they believe dredging disturbed toxic chemicals and caused the mass deaths. Both the government and Tees Valley Combined Authority rejected this claim, with Defra suggesting naturally occurring algae was the most likely cause. Defra is organising an independent panel that will reinvestigate by January, and MPs are now calling for the inquiry to be open and collaborative, ensuring independence in the process.

Policy

Campaigners call for biodegradable plastic to be included in English single-use cutlery ban. The ban, expected to be announced in the coming weeks, comes after Scotland and Wales already legislated to ban various single-use plastics, including those described as biodegradable. Many ‘bioplastics’ are environmentally damaging and won’t break down in the natural environment, despite being termed biodegradable.  

A report from the House of Lords has said that access to green space needs to be prioritised when deciding how to use land. The cross-party House of Lords land use in England commission has laid out its priorities for a land use framework. This would divide up the land in England and decide where is best for different types of agriculture, as well as carbon sequestration, nature restoration and recreation. The report, published on Tuesday last week, highlights the need for greater access to the natural world for the public, as it is ‘important for health and wellbeing, especially in urban and peri-urban locations near where people live’.  

Research

New research has found the structures and binding environments of pigments bound to a protein responsible for photosynthesis at sea. Using cryogenic electron microscopy, the team studied a marine macroalga, Sea Staghorn (Codium fragile), which uses a protein termed a ‘photosynthetic antenna’ to efficiently utilise the blue-green light that reaches the ocean floor. The mechanism by which this is achieved has not yet been fully understood but this new research is contributing to a better understanding.

Sea Staghorn (Codium fragile) by Jerry Kirkhart via Flickr

A breakthrough in nuclear fusion energy has been announced by US scientists. Physicists have been pursuing the technology for decades as it promises a potential source of near-limitless clean energy. The fusion experiment, which took place at the National Ignition Facility in California produced more energy than was put in, but experts say there is still some way to go before fusion powers homes. Nuclear fusion works by taking pairs of light atoms and forcing them together, which releases a lot of energy. This process, while giving off small amounts of short-lived radioactive waste, produces no greenhouse gas emissions and therefore would not contribute to climate change.  

Pollination loss removes healthy food from global diets. New research led by Harvard T.H. Chan School of Public Health has found that this increases chronic diseases causing excess deaths. Inadequate pollination, due to reduced biodiversity, has led to a 3-5% loss of fruit, vegetable and nut production, linked to an estimated 427,000 excess deaths annually from lost healthy food consumption and associated diseases, including heart disease, stroke, diabetes and certain cancers.

COP15

Eels are facing a population collapse after the annual fishing negotiations for key EU waters ended in quotas higher than those scientists have recommended. Conservation groups and scientists recently called for all EU eel fisheries to be closed to allow populations space to recover. However, the European Commission only agreed to extend the closure of eel fisheries at sea from the current three-month closure to six months. This will cover juvenile eel migrations and mature eels swimming between the sea and rivers. This decision came as the UN COP15 biodiversity summit, which ended on Monday 19th December, attempted to bring countries together to agree on targets to ensure the survival of species and stem the collapse of ecosystems across the world. A number of conservationists and scientists believe this decision is at odds with EU leaders’ proclaimed ambitions to protect biodiversity at COP15. 

Countries have agreed to protect 30% of land and sea, decrease environmentally harmful subsidies and increase financing for nature restoration and protection. This goal is set to be achieved by the end of the decade, with initial responses from green groups being broadly positive. A new biodiversity fund will be formed, to sit within the UN’s existing Global Environment Facility, pooling together development aid, private sector money, philanthropic donations and funds raised through the use of digital sequence information of genetic resources. Additionally, rich countries have committed to increasing international aid for biodiversity to $20bn annually by 2025, then to $30bn by 2030.

Climate Challenges: COP27: A brief summary of key outcomes

The UN Climate Conference COP27 took place in Sharm el-Sheikh, Egypt, from 6th to 18th November. Bringing together over 45,000 people from around the world, the list of delegates included indigenous peoples, local communities, civil society and world leaders, with the aim of delivering solidarity between countries and following through on commitments made in the landmark Paris Agreement.

In this post we’ll take a brief look at some of the outcomes of the conference.

Breakthrough agreement on “Loss and Damage” fund

In negotiations that went up to and beyond the official closing date of the conference, an agreement was finally made to establish a “loss and damage” fund to help those nations most at risk due to the climate crisis. Although many of the details to do with the fund have yet to be ironed out, the money is expected to go to the most vulnerable countries to assist with problems arising from droughts, flooding and other situations caused by climate change.

Commitment to limiting global temperature rise

Although the final agreement of COP27 stated “the urgent need for deep, rapid and sustained reductions in global greenhouse gas emissions” and a renewed commitment to limit global warming to 1.5°C above pre-industrial levels as stated in the Paris Agreement, there were widespread concerns that there have been no concrete plans to cut fossil fuel emissions since COP26.

The global transformation to a low carbon economy has been estimated to require investments of USD 4–6 trillion per year. This amount would require a complete transformation of financial systems, and concerns were raised that developed countries are not yet showing signs of working together to achieve this.

World Leaders Summit

The World Leaders Summit took place over two days and involved 112 world leaders in six round table discussions. Under the general title “Together for Implementation”, these discussions were intended to break down the steps required to translate commitments into concrete and achievable action. Topics covered by these discussions included:

  • Just transition
  • Innovative finance
  • Investing in the future of energy
  • Food security
  • Water security
  • Climate change and the sustainability of vulnerable communities
The voice of youth at COP27

Children and young people were given much greater prominence at COP27, with governments being encouraged to listen to their thoughts and opinions, and incorporate their ideas in solutions and policies.

The first ever Pavilion for Children and Youth featured a lively programme of discussions, panel events, creative workshops, talks and networking, and provided a dedicated space where the voices of young activists could be heard.

Also new at COP27 was the youth-led climate forum which brought together policymakers with young representatives from the Conference of the Youth (COY17), who presented the Global Youth Statement and highlighted the topics that they wanted raising during COP27 discussions.

Other key outcomes

• The second technical dialogue of the Global Stocktake took place. The Global Stocktake aims to assess collective progress on the implementation of the Paris Agreement. The UN Secretary-General will convene a ‘climate ambition summit’ in 2023, ahead of the conclusion of the stocktake at COP28 next year.

• The Forest and Climate Leaders’ Partnership was launched, which aims to half forest loss and degradation by 2030 by uniting action by governments, business and other community leaders.

• A USD 3.1 billion plan was announced by the UN Secretary-General which would ensure that everyone on the planet is covered by early warning systems by 2027. This is particularly important for the most vulnerable communities who often have no idea that hazardous weather is on its way until it is too late.

• A 12-month masterplan was drawn up to help make cleaner energies more accessible. Involving 25 collaborative actions to be delivered in time for COP28, the plan aims to speed up decarbonisation within five key areas: power, road transport, steel, hydrogen and agriculture.


For information about last year’s COP26, check out our series of blogs on its importance, the first week update and a round up of all the major outcomes from that event and how they could affect our efforts to combat climate change, if countries and businessess stay committed. We also have a series of blogs that look at some of the toughest global climate challenges that we are currently facing.

However, climate change isn’t the only challenge the natural world is facing. Despite world-wide and on-going efforts, biodiversity is deteriorating on a global scale, with the decline projected to worsen if nothing changes. COP15, the UN Biodiversity Conference, is currently underway (7th to 19th December 2022) and aims to agree a new set of goals for nature over the next decade through the Convention on Biological Diversity post-2020 framework process. For more information on this, please check out the dedicated UN webpage.

This Week in Biodiversity News – 5th December 2022

Conservation

More than 20,000 bison, in 65 herds, are now owned by 82 Native American tribes across the US. Once roaming North America’s Great Plains in the tens of millions, bison were slaughtered to near extinction by European settlers. Previously, conservation efforts for this species have excluded Native Americans but now this cultural connection is being rekindled, increasing food security, reclaiming sovereignty and improving land management.

Bison by Sheila Sund via Flickr

More than 50 shark species are to be given protection from over-exploitation. Nearly 200 countries voted to add them to the list of species protected under global trade rules. This includes tiger sharks, blacktip sharks, the bonnethead and blue sharks. The two shark families, requiem sharks and hammerhead sharks, that these species belong to make up over 50% of the trade in shark fins for soup, with many species threatened with extinction. By listing them on CITES, trading products that contain these species will be much harder. 

The largest-ever dam demolition will restore hundreds of miles of historical salmon habitat. Four ageing dams are set to be destroyed along the Klamath River in California and Oregon, a win for the Native American tribes and environmentalists that have been fighting for this for years. This $500 million proposal was approved in November and the project is slated to began next year, with the biggest removals taking place in 2024.

Cranes fledge young on the Suffolk coast for the first time. The RSPB recorded two successfully raised chicks at Snape Wetlands Nature Reserve by a pair of cranes. Only around 65 pairs breed in Britain each year. This is a great sign for the relatively new reserve: the original 82ha graslland was converted to wetland and reedbed between 2008-2014. The RSPB has said it will continue to manage the wetlands to encourage more cranes to breed at the site.  

Common crane by Charlie Jackson via Flickr
New discoveries

A new seaweed species has been discovered more than 100 metres below the surface of the Antarctic Ocean. The red algae, Palmaria decipiens, was found by a team that included researchers from the University of Aberdeen using a remotely operated vehicle. The project, funded by the UK Natural Environment Research Council, set out to clarify the maximum depths that seaweed could grow in Antarctica. Samples were collected for further examination and DNA sequencing was then used to confirm the type of seaweed.  

Extinction risk

The Mount Ballow mountain frog, only discovered earlier this year, is already facing extinction, despite living in a World Heritage rainforest. Scientists have warned that the species could become extinct by 2055 due to the impacts of climate change reducing the availability of suitable habitats. These frogs are currently stranded on an ‘island in the sky’ due to habitat loss within the upland mountain rainforests of the Gondwana Rainforests of Australia, and occupy a very narrow niche. 91% of this ecological niche would be lost under a worst-case scenario of three degrees warming, according to lead author Liam Bolitho. 

Calls for a ban on eel fishing from an intergovernmental scientific organisation are challenging the UK and EU to step up on the extinction crisis. Juvenile populations of this snake-like fish have crashed by between 95-99% since 1980. The Internation Council for Exploration of the Sea (ICES) now advise that fisheries catch no European eel in 2023. With the UN Biological Conference currently taking place, now is the time for European countries to make the right commitments.

European Eel by Bernard Dupont via Flickr
Climate Change

A survey has found that 80% of Scots fear climate change impacts on Scotland’s nature. The research, conducted for charities network Scottish Environment LINK, also found that pollution and ocean warming are also major fears. Just over 1,000 Scots were interviewed between 31st October and 6th November. Nearly a third of those polled stated thay were “very concerned” about the impact of climate change on Scotland, with 50% saying they were “quite concerned”. Just 14% put that they were “not that concerned”, and only 3% stated they were “not at all concerned”.

Policy

A number of MPs are backing the bill to ban trophy hunting overseas, in hopes to protect many endangered animals that are being hunted to the brink of extinction. Support currently includes the MPs for East Yorkshire, North Devon and Milton Keynes. The bill, which has cross party support, would ban British hunters from bringing ‘trophies’ of endangered and vulnerable animals into Britain. The bill has passed its second reading and it is now preparing for the committee stage of its progress through Parliament, which is expected to take place in the New Year.  

Research

Tissue loss, decay and death, along with widespread coral bleaching, were reported across the northern coastline of New Zealand last year, impacting hundreds of thousands of specimens. Latest research shows that the most severe impacts on sponges occurred in areas where a prolonged marine heatwave was most intense. These organisms serve a number of important ecological functions, including filtering large quantities of water and moving carbon from the water column to the seafloor. A major loss in coral species would change the community structure of the ecosystem within that habitat, having widespread impacts on a variety of species.

This Week in Biodiversity News – 14th November 2022

Conservation

Between 2003 and 2019, almost a quarter of Sweden’s remaining unprotected old-growth forest was logged. These rare and ecologically valuable forests are rich in biodiversity and are some of the last remaining areas where we can see how northern landscapes may have looked before humans began altering them. If logging continues at the same rate, all of these old-growth forests will be lost within the next 50 years.

Pollinators, such as bumblebees, are much less likely to land on flowers that have been sprayed with fertilisers and pesticides, as they can detect changes in the electric field around the flower. It was previously thought that the chemicals may affect the insects’ vision and sense of smell, but recent research has now proven that this is not the case. Spraying the plants with chemicals significantly reduces the amount of feeding that the bees undertake.

New discoveries

A tiny species of clam has been found at Naples Point, in southern California, that has never before been encountered in the wild. Prior to this discovery, our only knowledge of this species was from fossil records, and it was presumed to be extinct. This diminutive mollusc, described in 1937 from fossil remains as Bornia cooki, has a shell which is only 10mm wide and a bright, white-striped foot which is used for burrowing.

Climate change

A new review, published in Ecological Monographs, has warned that the effects of climate change on insects is likely to ‘drastically reduce our ability to build a sustainable future based on healthy-functional ecosystems’. Compiled by a team of 70 scientists from 19 countries, the report describes both the short- and long-term prognosis for insects as bleak, and stresses that urgent action at both a personal and policy level is required.

A new analysis from the groups Global Witness, Corporate Europe Observatory and Corporate Accountability reported that 636 fossil fuel lobbyists are registered to attend the COP27 climate talks – a figure that is up 25% from last year. This shows a worrying rise in the influence of the fossil fuel industry at these critical climate talks.

There is increasing concern that the Arctic ocean is becoming warmer and saltier due to climate change. Referred to by oceanographers as ‘spicy’ water, these increases in temperature and salinity are a problem, as they create a layer of water that tends to sit on the surface and not mix with the cooler, less salty (or ‘minty’) water below. This then impacts the formation and maintenance of sea ice.

Citizen science

Keen citizen scientists in the UK are being asked to contribute to a huge study looking at changes in mammal activity in response to climate change. The MammalWeb network, which was founded in 2013 at Durham University, will utilise images from camera traps deployed by members of the public around the country to build a comprehensive picture of the UK’s mammal populations. In doing so they hope to gain better insights into the policies and interventions that are needed the most to conserve these populations.

Research

A new technique developed at the Université de Montréal (UdeM) and the University of Minnesota will allow scientists to gain insights into how species of plant that have been preserved as dried specimens in herbaria interacted with their environment when they were living. By learning more about traits such as leaf structure, chemical composition and water content, it is hoped that more information can be gained about how plant communities have changed over time, and how we might help them to thrive in the future.

 

This Week in Biodiversity News – 31st October 2022

Climate Change

100 universities in the UK have pledged to divest from fossil fuels, equating to 65% of the country’s higher education sector. The Fossil Free campaign, led by students, has been active since 2013, with the first institution, the University of Glasgow, announcing its divestment in 2014. Coventry University has become the 100th. Together, the endowments now unavailable for fossil fuel companies are worth more than £17.6bn.

Key UN reports published recently are warning that the world is close to an irreversible climate breakdown. The reports state that global greenhouse gas emissions must fall by about half by 2030 to meet the internationally agreed target of limiting heating to 1.5C or below, but they are still rising. This news comes ahead of the announcement that profits from the world’s seven biggest oil firms increased to nearly £150bn so far this year.

Conservation

The threatened Barberry carpet moth has seen a boom in numbers in a forest in Dorset, with the population trebling in four years. Experts found 50 larvae in Blandford Forest during their most recent survey, compared to just 14 in 2018. The moth was almost extinct in the 1980s, limited to just a single location in the UK. This drop was thought to be due to Barberry bushes being removed by farmers. Both Forestry England and Butterfly Conservation began planting Barberry plants in woodlands and along the edges of farmland in 2007 to try to repopulate the species.

The Center for Biological Diversity is suing National Oceanic and Atmospheric Administration (NOAA) Fisheries in the US, as it says the organisation is not protecting endangered Pacific humpback whales from entanglements in drift gillnets. The lawsuit claims that, in the past two fishing seasons, about 12 humpbacks were caught in the California-based drift gillnet fishery, violating the Endangered Species Act. Several other lawsuits have been launched in recent weeks to protect wildlife, including one for the lesser prairie chicken and another for the streaked horned lark.

30% of forests in Sierra Nevada, USA, disappeared between 2011 and 2020. The historic droughts and wildfires that plagued California for more than a decade have severely impacted woodlands. More than half of mature forest habitats and 85% of high-density mature forests have either been destroyed or transformed into low-density forests. These areas usually contain high levels of biodiversity, with a range of different types of trees, but the increasing loss of these mature forests is threatening this biodiversity.

New discoveries

Six new rain frog species have been discovered in Ecuador. Scientists discovered all six species on the eastern slopes of the Ecuadorian Andes, in two national parks, within a 20km-radius of deforested areas. There are more than 550 different Pristimantis frog species across Central and South America. All six have been recommended to be added to the IUCN’s red list of threatened species.

A new species of mammal has been found in mainland Britain for the first time. The greater white-toothed shrew, usually found across western parts of Europe as well as the Channel Islands of Guernsey and Alderney, was spotted in Sunderland in 2021. The dead specimen was examined using a DNA test to confirm its species. There is other evidence that this species has been here for a while, with remains found in owl pellets in Ireland in 2007 and photos dating from at least 2015. Research is currently underway to discover how these shrews may have arrived.

Research

A new study has found that bees ‘count’ from left to right. There is a much-debated theory that this direction is inherent to all animals, including humans. However, as the opposite direction has been found in people from cultures that use an Arabic script, it has been suggested that there is a cultural element involved. The study, published in Proceedings of the National Academy of Sciences journal, found that after being trained to associate numbers with a sucrose reward, honey bees ordered numbers in increasing size from left to right.

A bar-tailed godwit has set a world record with a 13,560km continuous flight from Alaska to southern Australia, taking 11 days and one hour. The satellite tag recorded the flight of the five-month-old juvenile bar-tailed godwit, which was over 500km longer than the previous record. Juveniles migrate separately from adults, who make the journey up to six weeks earlier, as the juveniles use the extra time to fatten up for the long migration. Bar-jailed godwits can shrink their internal organs to make more space for these extra fat stores.

Hybrid songbirds are found more often in human-altered environments than in natural areas. A new study, published in Global Change Biology, found that hybrids of the black-capped and mountain chickadee, two common North American songbirds, were more likely to be found where humans had altered the landscape in some way. The study looked at observational data from the citizen science site eBird, as well as DNA samples from 196 black-capped and 213 mountain chickadees at 81 sites in North America. While they found a positive, significant correlation between hybrids and areas where humans have disturbed their habitat in some form, the study did not determine why these hybrids were more common in these areas.

Policy

The UK government has delayed its publication of clean water and biodiversity targets, breaching its Environment Act. The targets, which will underpin the country’s nature recovery were meant to be released on 31 October, ahead of the COP27 UN climate talks in November. The delay in publication means the delegation will not have targets to present to other countries. This is stated to be due to the “significant public response” to Defra’s consultation on nature recovery, with no date set as to when the targets will be published. This adds further concern to a number of environmentalists, as the government is currently reviewing over 500 pieces of environmental legislation by the end of next year under the retained EU law bill. If, by the end of this period, any bill has not been amended or retained by parliament, it will fall. Many critics are suggesting that it is unlikely the government will be able to review the thousands of EU laws required within this time.

Pollution

An analysis has found that scrapping nature-friendly farming payment schemes could worsen river pollution in England by up to 20%. Recent sources suggested that the previous government was looking to remove nature restoration from the upcoming scheme intended to replace the EU’s area-based payment scheme for farmers. 86% of rivers in England were deemed to not be in a ‘good ecological condition’, with agriculture being the reason why 40% of water bodies in England failed to meet this status, according to the Environment Agency.

Living Planet Report 2022

WWF’s 2022 Living Planet Report on Youtube.com
What is the Living Planet Report?

The Living Planet Report, compiled by WWF in association with the Zoological Society of London, is the most comprehensive study ever undertaken on the changes in global biodiversity and planet health. Using datasets from almost 32,000 populations of 5,230 species across the planet, the document details how global wildlife populations have changed since 1970, and how these vary between continents and species groups. Utilising recent developments in mapping analysis techniques means that the speed and scale of biodiversity change can now be seen much more clearly and on a finer scale than ever before, allowing us to pinpoint the areas that are suffering most and where nature is contributing most to our lives.

As well as documenting the data, the Living Planet Report aims to show that positive change is still possible, and that the key drivers of biodiversity loss and habitat destruction need to be addressed with great urgency. The final chapter of the document, ‘Building a nature-positive society’, discusses how there is no one-size-fits all solution to the biodiversity crisis, and that transformational change will be required across all areas – production, consumption, finance and economics – before we start to see a beneficial effect on nature.

Key points from the 2022 Living Planet Report

• Changes in the Living Planet Index, which tracks trends in population abundance of mammals, fish, reptiles, birds and amphibians, has revealed that populations have declined by an average of 69% between 1970 and 2018.
• Freshwater populations have been hit the hardest, showing an average decrease of 83% over this period.
• Latin America and the Caribbean showed the biggest decline in species abundance (-94%), followed by Africa (-66%). This is in comparison to a relatively moderate -18% recorded in Europe.
• Land-use change is still the most significant driver of biodiversity loss. Unless we make serious efforts to control the impacts of climate change, however, this is likely to become the most dominant cause within the next few decades.

Looking forward

“We know that the health of our planet is declining, and we know why. We also know that we have the knowledge and means to address climate change and biodiversity loss”.

In the final chapter of the Living Planet Report, we are reminded of the recognition by the UN in July 2022 that it is a human right to live in a clean, healthy and sustainable environment. With this in mind, it is clear that the current climate and biodiversity crises are also human rights crises, and our world’s most vulnerable people, wildlife and places are already bearing the brunt of these.

It is also clear that the changes required to ‘bend the curve’ of biodiversity loss will need to be nothing short of transformational and system-wide. They will need to impact all aspects of the way we live, including our means of production and consumption, the technology we use, the things we finance, and our entire economic systems.

Within the report, Costa Rica is lauded as an inspirational environmental giant due to the changes made to its constitution in 1994. Since then, 30% of the country has been designated as national parks, 99% of its electricity comes from renewable sources and reforestation has doubled the amount of forest cover from 25% in 1994 to 50% today. Looking to examples such as these as inspiration for what can occur with large-scale systemic change is key to realising the dream of a healthy environment for all.

The ultimate message provided by the Living Planet Report is that, while there is still time to act, urgency is required. Solutions will need to be applied globally by governments, businesses, local communities and Indigenous Peoples with the aim of reversing biodiversity loss by 2030, and achieving complete recovery by 2050. The UN Convention on Biological Diversity’s COP15 is a huge opportunity for world leaders to commit to rapid and effective action in order to secure a nature-positive, equitable future for everyone.

This Week in Biodiversity News – 17th October 2022

Climate Change

Climate change could force primates such as monkeys and lemurs from the trees to the forest floor. A new study from San Diego Zoo Wildlife Alliance suggests that in warmer temperatures, tree-dwelling primates could begin spending more time on the ground searching for shade and water. Spending more time on the forest floor could increase interactions between these species and humans, as well as domestic animals, increasing the chances of conflict, disturbance and disease transmission. This change in behaviour may also have an impact on other species, as the primates’ diets may become more generalised, changing predator/prey relationships and potentially impacting dispersal strategies.

Extinction Risk

More than a third of hoverfly species in Europe are at risk of extinction, according to the International Union for Conservation of Nature (IUCN). This assessment, requested and funded by the European Commission, found that intensive agriculture, harmful pesticides, unsustainable commercial forestry, urban development and climate change have been identified as the main threats to hoverflies. 314 out of 890 hoverfly species in Europe are Vulnerable, Endangered or Critically Endangered.

Almost 70% of animal populations have been wiped out since 1970, according to the biennial Living Planet Report. The leading scientific assessment, run by the World Wildlife Fund (WWF) and Zoological Society of London, shows that the abundance of birds, fish, amphibians and reptiles declined, on average, by more than two thirds between 1970 and 2018. The 89 authors are now urging world leaders to reach an ambitious agreement at the upcoming COP15 biodiversity summit and to cut carbon emissions to limit global heating to below 1.5 degrees within this decade.

Alaska has canceled its fall and winter snow crab harvesting seasons after the population declined across the Bering Sea. The cause of the collapse is currently being researched but it is thought that increased predation, combined with stresses from warming waters, may be to blame. Populations of several species, including the snow crab, have also been shifting away from the coast and northwards for the last four decades, impacting Alaskan fisheries and local communities.

New discoveries

A new fish has been discovered in the Atacama Trench off the west coast of South America. The small blue snailfish was spotted by a team of scientists using free-falling landers to sample deep-sea creatures using cameras and traps with bait. The deep-sea species was seen from about 6,000-7,600m deep and, using DNA barcoding and a 3D x-ray technique called microcomputed tomography, the team was able to determine where the species fit within the snailfish family. They were surprised to learn that this new species appears to be a seperate coloniser of the Atacama Trench, as it belongs in the genus Paraliparis, with other species in this genus rarely being found deeper than 2,000m.

Research

A new study has found that wild bees are active in woodland tree-tops, a habitat now thought to play a more significant role in bee conservation than previously thought. Researchers from the University of East Anglia studied bee communities across 15 woodland sites in a farmed landscape in Norfolk in late spring, examining levels of bee activity in four habitats: the canopy and understory of both woodland interiors and exposed woodland edges. They found a diverse community of wild bees utilising the woodland canopy, particularly near flowering sycamore trees. This has implications for bee conservation policies, as nectar producing trees such as sycamores may represent a significant food source for certain bee species.

Catch and release fishing may be having physiological and behavioural impacts on sharks. The practice, an important component of both ecotourism industries and scientific research worldwide, was the subject of a recent study published in Conservation Physiology. Researchers used ‘biologging’ and blood chemistry to explore the impacts of these interactions on two species: the blue shark (Prionace glauca) and the tiger shark (Galeocerdo cuvier). The research shows that short-term capture lead to a significant and rapid increase in body temperature in both species, lasting for between 10-40 minutes post-release. Further research is now needed into the potential longer term effects on the welfare of sharks that are caught using catch and release methods.

Policy

Experts call for legal rights and protections to be granted to non-human entities such as animals, trees and rivers to help tackle climate breakdown and biodiversity loss. A report entitled Law in the Emerging Bio Age states that legal frameworks may have a key part to play in governing human interactions with the environment and biotechnology.

Pollution

Chicken farms may explain the declining health of the River Wye, according to samples taken by citizen scientists. The Wye Salmon Association, with support from the Countryside Charity CPRE, tested soil samples along public footpaths near a tributary of the River Wye in Herefordshire and found that the highest levels of phosphorus were found in soils close to intensive poultry units. High phosphorus levels in river systems have a number of ecological impacts, including eutrophiciation, where excess nutrients cause increased algal and plant growth, which can reduce oxygen levels in the water. Toxic algal blooms can occur, as well as changes in habitat availability, where increased plant growth has covered previously bare gravel or sediment river beds. Campaigners are now calling for stronger regulations around the spreading of manure to limit phosphorus levels in soil.

A new study has revealed the ‘staggering’ scale of lost fishing gear currently drifting in the oceans. These include 25 million pots and traps, 14 billion hooks, and enough nets that, if tied together, could stretch around the world 18 times. Published in Science Advances, this report by researchers from CSIRO and the University of Tasmania used interviews with 451 commercial fishers from seven different countries to ask about what was being lost. They then matched the date from these interviews with data on global commercial fishing to estimate the total annual losses world wide. Ghost nets, as these lost nets are called, are lethal for many forms of marine life, potentially continuing to trap wildlife for years after they’re lost.

Conservation

A rare woodpecker has been spotted in Dorset, despite thoughts that it had died out locally. The lesser spotted woodpecker, whose population has fallen by 83% since 1970, was spotted at Hollis Mead Organic Dairy Farm in Corscombe. There are only thought to be 12 breeding pairs in Dorset according to the Dorset Wildlife Trust. The farm’s managing director believes that the organic approach his farm is taking, including not using insecticides or pesticides as well as leaving the woodland unmanaged, is beneficial for biodiversity.

This Week in Biodiversity News – 3rd October 2022

Climate Change

As global temperatures rise due to climate change, blue lakes in North America and Europe are likely to turn from blue to green-brown. This is mainly due to changes in algal blooms and sediments which are affected by temperature and precipitation. As well as the purely aesthetic impacts on local culture and recreation, there are important implications for water quality, particularly for lakes that are used as drinking water sources.

Termites by Aleksey Gnilenkov via Flickr.

An international study looking at the future role of termites in ecosystems has determined that their role could be much larger in a warming environment. These wood-consuming insects are important for breaking down wood and contributing to the earth’s carbon cycle, but their activities are currently concentrated mainly in the tropics. With an increase in global temperatures, they are likely to expand their ranges much further north and south.

On September 18th 2022, the Arctic reached its annual minimum extent, covering an area of 1.8 million square miles. This is approximately 598,000 square miles below the 1981-2010 average minimum. Since measuring began in 1978, the amount of summer ice in the Arctic has declined significantly and 2022 was tied with 2017 and 2018 for 10th lowest in 44 years of observations.

Research

Growing hedges and perennial flower strips around intensively-farmed orchards has proven to be effective in providing wild bees with continuous forage over the growing season. The study, which was conducted by researchers at the University of Freiburg, found that the variation in flowering times of the hedgerows and flower strips meant that bee diversity and abundance were both improved.

Researchers from Hokkaido University have been using the fundamentals of chaos theory to study the behaviour of electronically tagged narwhals. In doing so, they have detected interesting patterns in what was previously assumed to be completely irregular diving and resting behaviours. It is hoped that this novel technique might be useful in assessing challenges to narwhals relating to climate change and loss of sea ice.

Blue Tit by Geoff Henson via Flickr.

A study looking at the impacts of the Covid-19 lockdowns on the natural world, and recently published in Proceedings of the Royal Society B, has found that different bird species were affected in different ways. Many that were previously frequent visitors to parks and gardens were found to visit them less, as these spaces were increasingly occupied by people and their pets. Scavengers, however, such as gulls and corvids, were more likely to benefit from the change in human behaviour, feeding on the increased food waste that was left behind.

Conservation

A new Welsh Agriculture Bill was laid before the Senedd last week which would see Welsh farmers being paid to help to protect nature and fight climate change. Currently, farmers receive a share of public funding based largely on the amount of land they have. In the future, payments could depend on conservation work such as planting trees, restoring peat bogs and other essential habitats as well as utilising more sustainable farming methods.

A new study has shown that red kite chicks born during droughts, such as that of 2022 in England and Wales, often show permanent developmental damage which can make them smaller, more vulnerable to disease and less capable of hunting as adults. Although widely considered a conservation success story, this new research has led to concerns about the future of red kites in a continually warming environment.

Red Kite by Stefan Berndtsson via Flickr.

An updated Wildlife Comeback Report, commissioned by Rewilding Europe and published on 27th September, highlights the species that have made a comeback in Europe over the last four to five decades, and explores the situations that have allowed this to become possible. The report hopes to show that, given measures such as effective legal protection, improvement and connection of habitats, and dedicated species recovery and introductions, wildlife can both return and thrive.

The Sussex Bat Group and Vincent Wildlife Trust are working together in an urgent attempt to save a colony of endangered greater horseshoe bats discovered in West Sussex. The barn in which they live is in urgent need of repair – work which needs to be undertaken during the winter while the bats are hibernating in nearby caves. An appeal to raise £200,000 has been launched to cover the cost of the work.

New regulations introduced in the Republic of Ireland mean that basking sharks are now provided with special protection. As a result, it is now an offence to hunt or injure a basking shark, as well as interfere with or destroy its breeding or resting places. One of the largest species of shark, the basking shark is globally-threatened and faces a high risk of extinction.

On Saturday 1st October, new laws came into force which mean that beavers are now officially recognised as a native species in England and a European protected species. Studies have shown that the introduction of beavers into rivers can improve water quality, stabilise water flows, store carbon, and establish the types of habitat that are beneficial for many other species. The Wildlife Trusts are now calling for more urgency from the government in providing support to landowners involved in further reintroductions.

Conservation Land Management: Autumn 2022

From a close look at two very different restoration projects in Yorkshire to the eradication of Japanese knotweed without the use of herbicides, the Autumn issue of Conservation Land Management (CLM) covers a variety of topics and themes relevant to those involved in managing land for nature. Below is a summary of the articles featured in this latest issue.

The first of the Yorkshire-based articles, authored by Sarah Lonsdale of the North York Moors National Park Authority (NYMNPA), describes the River Esk Restoration Project. The River Esk flows through the North York Moors and is the only river in Yorkshire to support populations of the rare freshwater pearl mussel. Agricultural pollution and sedimentation threaten the mussel’s habitat and the Esk’s water quality, however, and the Esk Restoration Project aims to address these pressures through habitat creation and restoration, farm infrastructure grants and targeted one-to-one farm advice. Sarah describes how, through this project, the NYMNPA has worked with farmers and landowners to reduce agricultural pollution via riparian habitat creation and improvements in on-farm infrastructure. This has involved, for example, the installation of in-field solar-powered water troughs to reduce riverbank erosion caused by livestock trampling and the creation of wide habitat buffers to help reduce the amount of pollutants reaching the river – Sarah describes these and other approaches in more detail, and discusses the future of the project.

Before (left) and after (right) riverbank restoration. Chris Watt (left); Sarah Lonsdale (right)

The second article set in Yorkshire is focused on peatlands. Yorkshire’s peatlands contain 27% of England’s blanket bog and support an abundance of wildlife, but changes in land management, for example through drainage and heavy grazing, have led to their degradation. In this article Jenny Sharman describes the impressive work undertaken by the Yorkshire Peatland Partnership to reverse this trend and restore and rewet Yorkshire’s peatlands. Signs of recovery have quickly become apparent, and Jenny guides us through the process of peatland restoration, which begins with initial surveys to assess the extent of the damage using satellite imagery in preparation for work on the ground where a myriad of approaches are used, from using diggers to revegetate exposed peat to installing timber sediment traps and coir logs to help slow the flow of water and retain sediment. 

Three years after peatland restoration began. Jenny Sharman/YPP

Looking now to a different habitat, Robin Pakeman discusses the management of machair, an extremely rare coastal habitat only found in western Ireland and western and northern Scotland. It develops on shell sand in exposed coastal areas, and refers to the plain behind sand dunes. Human use of machair has a long history, and traditional management combined with specific environmental conditions has produced this wonderfully unique habitat, famous for its spectacular floral displays and bird and insect communities. Crofting, a form of land tenure that only occurs in north and west Scotland, has had a strong influence on Scotland’s machair, and in this article Robin explores the management of both arable and grassland machair, and describes the diversity of wildlife associated with this habitat. 

Machair is known for its spectacular floral displays. Robin Pakeman

The infamous Japanese knotweed is a problematic non-native invasive species in the UK, and the general consensus regarding its control suggests that the use of glyphosate-based herbicides is required. Aston’s Eyot nature reserve, in east Oxford, was previously a rubbish dump, and since it was badly capped in the late 1940s Japanese knotweed established itself there, suppressing the growth of many other plants that would otherwise thrive. To combat this issue, the Friends of Aston’s Eyot, a group formed in 2010 to care for the nature reserve, decided to trial different approaches to management of knotweed. The trial area was divided into three; two of these were to be treated with glyphosate. In the third area knotweed was to be cut and its emerging shoots would be pulled out by hand. Claire Malone-Lee took responsibility for this third area, and in this article reflects on eleven years of manual control and demonstrates that it is possible, particularly on small sites or where knotweed is not overly dominant, to successfully eradicate Japanese knotweed without the use of herbicides.

When the Able Marine Energy Park project on the Humber Estuary was given the go-ahead, Roger Morris was concerned for the internationally important flock of black-tailed godwits that resided there, and the mudflats that they depended on. The final article in this issue, a viewpoint piece by Roger, asks if it is possible to create sustainable mudflats as a mitigation measure, and explains why it is difficult to stop or slow the process of mudflat becoming saltmarsh. He describes the processes behind saltmarsh and mudflat development, and addresses the different approaches that have and can be used for mudflat creation.

In this and every issue you can expect to see Briefing, keeping you up to date with the latest training courses, events and publications, and On the ground which provides helpful tips or updates on products relevant to land management. Other features, such as Review, which can include letters from readers or updates from our authors, also regularly appear in CLM.

CLM is published four times a year in March, June, September and December, and is available by subscription only, delivered straight to your door. Subscriptions start from £22 per year. If you would like to read any of these articles, back issues are also available to purchase individually (subject to availability).

If you are involved in a conservation project and think your experiences could be useful to other practitioners, we would love to hear from you. Feel free to contact us if you are interested in writing for CLM – we will be happy to discuss your ideas with you.

This Week in Biodiversity News – 21st September 2022

Climate change

A new report shows that Australia is funding just one-tenth of its fair share of global climate action. The study by Oxfam and ActionAid Australia is calling on Australia to increase its climate finance commitments to $3bn, ahead of COP27 this November. Currently, Australia has only committed $400m a year between 2020 and 2025 for international climate funding. For Australia to meet its fair share of the dedicated $100bn fund agreed upon in 2009, its contributions must be $4bn annually from 2025.

Both wild and farmed Atlantic salmon are threatened by warming waters. The climate crisis is warming the world’s rivers and oceans. As warmer water contains less oxygen and simultaneously speeds up the salmon’s metabolism, increasing the need for oxygen, warmer temperatures are reducing salmon fitness, impacting their abilities to adapt to stressors. Studies by the North Atlantic Salmon Conservation Organization have shown that, from 2007 to 2016, only a single salmon survived its first year from 2,000 fertilised eggs, whereas prior to 1990, it would only require 1,000 fertilised eggs.

Atlantic salmon parr by E. Peter Steenstra/USFWS via Flickr

The UN has warned that the world is ‘heading in the wrong direction’ as the impacts of climate change worsen. The 2022 United in Science report has shown that there are five times as many weather, climate and water-related disasters as there were 50 years ago. The last seven years (2015-2021) have also been the warmest on record, with a 93% chance that at least one of the next five years could be hotter than 2016, the warmest year on record. To meet the 1.5°C goal set out in the Paris Agreement, current emissions reductions need to be seven times higher than they are now.

Research

A study has created a new framework to change how sharks, rays and chimaera species are considered in the design of protected areas. This will hopefully help provide the protection they need in the face of extinction. Sharks are apex predators and play a vital role in the functioning of balanced ecosystems, shaping communities and ensuring biodiversity. They’re threatened by fishing practices, either as targets or as by-catch, as well as negative public images which can lead to culls. By ensuring that the most up-to-date information is provided to governing bodies, policies and protected areas can be designed to ensure the protection of these species.

Hariotta raleighana, a long-nosed chimaera, by NOAA Ocean Exploration via Flickr

Satellites are now able to measure the thickness of sea ice in the Arctic Ocean all year round. Previously, spacecraft struggled to measure the state of sea ice in summer as the presence of surface meltwater confused instruments. Now, using ‘deep learning’ techniques, scientists are able to get reliable observations across all seasons. This will help to improve monitoring the impacts of climate change, while also aiding weather forecasting.

Researchers have found the world’s oldest heart preserved inside a fossilised prehistoric fish.  The 380 million-year-old heart was made in Western Australia and captures a key moment in the development of the heart found in all back-boned animals. Soft tissues are far less likely to be preserved than bones but the minerals of the Gogo rock formation preserved many of the fish’s internal organs, including its liver and stomach.

Conservation

A fungal outbreak is threatening the tricoloured bat with extinction in the US. White-nose syndrome, which disrupts the crucial winter hibernation of bats, is ravaging tricolour bat populations, as well as populations of a dozen other North American species, including the northern long-eared bat. Both of these species have been recommended for endangered designation by  The US Fish and Wildlife Service.

Female tricoloured bat by NABat via Flickr

Two adult grey wolves, along with two cubs, have been spotted in Oregon’s Cascade mountains, giving hope that the federal protections restored earlier this year are aiding the recovery of this endangered species. After decades of hunting across the US, Oregon recorded only 14 individual wolves at the end of 2009. Since then, following protections from the Endangered Species Act, the population has grown to 175 individuals in 2021.

Cheetahs have been released in India for the first time, 70 years after they went extinct. Eight cheetahs were flown into the northern Indian city of Gwalior from Namibia. They have been released into a fenced enclosure in Kuna National Park for their quarantine period over the next month, before being released into a larger enclosure containing natural prey. Their release into the wild is controversial, particularly as a population boom of another of India’s predators, the tiger, has led to increased conflict with people sharing the same areas.

Pollution

A Coalmine wastewater spill has turned a creek in Royal national park, Sydney, to black sludge. This is the third coal pollution incident involving Peabody Energy’s Metropolitan mine this year. The Environment Protection Agency of New South Wales have collected water samples and are conducting further assessments to determine the ecological impacts of this event. There is concern that this pollution may impact the state government’s plans to reintroduce platypuses to the area.