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New study shows alarming rate of potential species extinction due to climate change
A recent study authored by the University of Connecticut's Mark Urban found that close to one third of species across the globe would be at risk of extinction by the end of the century if greenhouse gases continue to increase at current levels. His study, published in the journal Science, looked at more than three decades of biodiversity and climate change research. The findings are alarming. The study found that if global temperatures rise to 2.7 degrees Fahrenheit (1.5 degrees Celsius) above the pre-industrial average temperature, exceeding the target of the Paris Agreement, extinctions would rapidly accelerate — especially for amphibians; species in mountain, island and freshwater ecosystems; and species in South America, Australia and New Zealand. Earth has already warmed about 1.8 F (1 C) since the Industrial Revolution. Climate change causes shifts in temperatures and precipitation patterns, altering habitats and species interactions. For instance, warmer temperatures have caused monarch butterfly migration to mismatch with the blooming of plants they pollinate. Many animal and plant species are shifting their ranges to higher latitudes or elevations to follow more favorable temperatures. While some species might adapt or migrate in response to changing environmental conditions, some can't survive the drastic environmental changes, resulting in population declines and sometimes extinction. Global assessments have predicted rising extinction risks for over a million species, but scientists have not clearly understood how exactly this growing risk is linked to climate change. The new study, published Thursday (Dec. 5) in the journal Science, analyzed over 30 years of biodiversity and climate change research, encompassing over 450 studies of most known species. If greenhouse gas emissions are managed in accordance with the Paris Agreement, nearly 1 in 50 species worldwide — an estimated 180,000 species — will be at risk of extinction by 2100. When the climate model's temperature is increased to a 4.9 F (2.7 C) rise, which is predicted under current international emissions commitments, 1 in 20 species around the world would be at risk of extinction. Hypothetical warming beyond this point makes the number of species at risk rise sharply: 14.9% of species were at risk of extinction under a 7.7 F (4.3 C) warming scenario, which assumes high greenhouse gas emissions. And 29.7% of all species would be at risk of extinction under a 9.7 F (5.4 C) warming scenario, a high estimate, but one that is possible given current emissions trends. The increase in the number of species at risk increases steeply beyond the 1.5 C warming target, study author Mark Urban, a biologist at the University of Connecticut told Live Science. "If we keep global warming to below 1.5 C, in accordance with the Paris Agreement, then the [extinction] risk from today to 1.5 C is not a large increase," Urban said. But at a 2.7 C rise, the trajectory accelerates. Species in South America, Australia and New Zealand face the greatest threats. Amphibians are the most threatened because amphibians' life cycles depend heavily on weather, and are highly sensitive to shifting rainfall patterns and drought, Urban said. Mountain, island and freshwater ecosystems have the most at-risk species, likely because these isolated environments are surrounded by inhospitable habitats for their species, making it difficult or impossible for them to migrate and seek more favorable climates, he added. Limiting greenhouse gas emissions can slow warming and halt these growing extinction risks, but understanding which species and ecosystems are most affected by climate change can also help target conservation efforts where they're needed most. Urban hopes the results have an impact on policymakers. "The main message for policymakers is that this relationship is much more certain," Urban said. "There's no longer the excuse to do nothing because these impacts are uncertain." December 5, 2024 - Live Science This is an important topic, and if you're a journalist looking to learn more, we can help. Mark Urban is an international award-winning scientist; a professor of ecology and evolutionary biology and the Arden Chair Ecology & Evolutionary Biology at UConn; and a global expert on climate change impacts on nature. He is available to speak with media - simply click on his icon now to arrange an interview today.
UConn insect expert David Wagner on the troubling decline of the mayfly
One of the world's oldest flying insects is in trouble. Mayflies are in serious decline and, after 300 million years in existence, their dwindling population should be an alarm bell for all of us. More than just a bug with a short life span flying masterfully near creeks, rivers, and ponds, the mayfly plays a serious role in local ecosystems and the environment at large. A key component in the food chain, the mayfly nymph feeds off of algae, plants, and rotting leaves, cleaning up nature's mess while growing large enough to become a meal itself -- for fish, amphibians, lizards, birds, and even humans. Without mayflies, the ripple effect upwards could mean calamity for the planet. In a recent Washington Post Magazine deep-dive, UConn insect expert David Wagner offered his perspective on the on the plight of the mayfly: I reached out to David Wagner, a biologist and lepidopterist at the University of Connecticut, for context, thinking that perhaps the problems were isolated or overblown. He has studied insects for decades and reviewed numerous scientific studies about them from around the globe. He did not provide much comfort. There’s a growing body of research suggesting that the world is in the midst of its sixth mass extinction, he said. The losses of all kinds of creatures appear to be driven by climate change, habitat degradation, pollution and other ecological stressors. In a paper for the Proceedings of the National Academy of Sciences last year, “Insect Decline in the Anthropocene: Death by a Thousand Cuts,” Wagner and several other scientists delivered a stark warning about the disappearance of insects. The report did not focus on mayflies, but Wagner told me they are among the most vulnerable of the world’s insects because of their need for clean, well-oxygenated water. “Mayflies are reliable ‘canaries in the coal mines’ for freshwater systems,” he explained. “And their future prospects, especially in areas that are drying or warming, are bleak.” September 19 - Washington Post Magazine Dr. David Wagner is an expert in caterpillars, butterflies, moths, and insect conservation, and he's commented extensively on the current decline of insects worldwide. Click his icon to arrange an interview today.
Tyre Extinguishers: Activists are deflating SUV tyres in the latest pop up climate movement
A new direct action group calling itself the Tyre Extinguishers recently sabotaged hundreds of sports utility vehicles (SUVs) in various wealthy parts of London and other British cities. Under cover of darkness, activists unscrewed the valve caps on tyres, placed a bean or other pulse on the valve and then returned the cap. The tyres gently deflated. Why activists are targeting SUVs now can tell us as much about the failures of climate policy in the UK and elsewhere as it can about the shape of environmental protest in the wake of Extinction Rebellion and Insulate Britain. Graeme Hayes talks about the activism that's been going on since the mid 00s.
How rabbits help restore unique habitats for rare species
European wild rabbits are a ‘keystone species’ that hold together entire ecosystems – according to researchers at the University of East Anglia. Our campus is home to hundreds of rabbits and Prof Diana Bell, from our School of Biological Sciences, has been researching them for more than 30 years. Now, she is one of the lead researchers on a new report which aims to restore and protect at-risk wildlife habitats which are rabbit dependent. The report shows how their grazing and digging activity keeps the ground in a condition that is perfect for sustaining other species that would otherwise move on – or die out. But their numbers are declining regionally, nationally and globally. And they are even being classed as endangered in their native region, the Iberian Peninsula. The findings come as efforts to save England’s most threatened species from extinction are turning the tide for wildlife in Norfolk and Suffolk thanks to the Shifting Sands project. Shifting Sands is one of 19 projects across England that make up the national Back from the Brink initiative. Together, these projects aim to save 20 species from extinction and benefit over 200 more. Lead partner of the rabbit work-stream and rabbit expert Prof Diana Bell, from UEA’ School of Biology, said: “The Breckland-based Shifting Sands project was set up to save some of the region’s rarest wildlife. “After several years of hard work by this multi-partner project, the fortunes of species classed as declining, rare, near-threatened or endangered are now improving in the Brecks. “The project has seen species recover in record numbers – including endangered beetle and plants, one of which is found nowhere else in the world. “Rabbits are incredibly important because their grazing and digging activity keeps the ground in a condition that is perfect for sustaining other species. “Sadly, rabbit populations have declined dramatically in the UK and across Europe, and the European wild rabbit is now listed as endangered in its ancestral Iberian Peninsula range. Their decline is largely due to a spill-over of new viruses from commercially bred rabbits. “The Shifting Sands project has shown us how important rabbits are to entire ecosystems, and it is vital that these habitats are conserved and protected. “We encouraged a rabbit revolution in the Brecks and we have produced a toolkit in partnership with Natural England to help landowners of similar rabbit-dependent habitats to do the same.” “Simple cost-effective ways of encouraging rabbits include creating piles of felled branches, known as brush piles, and banks of soil.” Monitoring over the past three years has shown the interventions are working, with evidence of significantly higher amounts of rabbit activity. Prof Bell said: “Our work resulted in evidence of rabbit activity in significantly higher numbers. 91 per cent of brush piles showed paw scrapes and 41 per cent contained burrows. Even when burrows did not form, the brush piles helped expand the range of rabbit activity.” The UEA research team worked in collaboration with Natural England, Forestry England, Plantlife, Breckland Flora Group, Norfolk Wildlife Trust, Suffolk Wildlife Trust, Butterfly Conservation, Buglife, the Elveden Estate and the RSPB to deliver this ambitious partnership project. It has seen five kilometres of ‘wildlife highways’ created, more than 100 specimens of rare plants re-introduced, habitat created and restored across 12 sites, species encouraged, and landscape-management practices improved. As a result, seven species of plant, bird and insect are increasing in number and many more are benefiting in turn. Among those species recovering are rare plants such as the prostrate perennial knawel that is unique to the Brecks, basil thyme and field wormwood. The endangered wormwood moonshiner beetle, lunar yellow underwing moth and five-banded digger tailed wasp are also increasing. All these species are identified in the UK’s Biodiversity Action Plan as being priorities for conservation. The open habitat maintained by rabbits supports two rare plants: the prostrate perennial knawel – found nowhere else in the world – and field wormwood. Pip Mountjoy, Shifting Sands project manager at Natural England, said: “The Brecks were described by Charles Dickens as “barren”. They are anything but. Their 370 square miles of sandy heathland, open grassland and forest support almost 13,000 species, making it one of the UK’s most important areas for wildlife. “That wildlife is under threat. Felling trees and encouraging a species that is often considered a pest may seem a strange solution. But in this instance, carefully managed ‘disturbance’ is exactly what this landscape and its biodiversity needs.” “The project’s interventions have provided a lifeline for this unique landscape, and shown how biodiversity can be promoted by ‘disturbing’ places – not just by leaving them alone. “ “These rare habitats are becoming overgrown and species are declining as a result of changing land management practices and human impacts. It’s our responsibility to restore and maintain these spaces for nature. Some of these species exist only here and, if lost, will be lost forever.” Established in 2017 with £4.7m from the Heritage Lottery Fund and £2.1m from other bodies, Back from the Brink was the first nationwide co-ordinated effort to bring together charities, conservation organisations and government bodies to save threatened species. More information about the Brecks, Shifting Sands, Back from the Brink and a toolkit to help rabbit conservation is available via www.naturebftb.co.uk.
"Apocalypse" - A period of mass extinction threatens insects – and the world that depends on them
UConn entomologist and professor David Wagner says all kinds of insects are at risk for “a death by a thousand cuts" -- decline attributed to multiple factors, including the climate crisis, agricultural intensification, development, deforestation, and the introduction of exotic and invasive species into new environments. He discusses the threats to the world's insect populations in this compelling new video report from UConn Today: Wagner cautions that many of these creatures will not be with us for much longer, and says people must act swiftly to help prevent these tremendous losses before it is too late. Wagner remains hopeful, and says there are many actions that can be taken now — from encouraging political leaders to enact policy changes, to simply letting part of the front lawn grow freely to provide a food-rich environment for insects. “This planet isn’t here for us to exploit,” Wagner says. Dr. David Wagner is an expert in caterpillars, butterflies, moths, insect conservation, and global insect decline, and he’s available to speak with media. Simply click on his icon now to arrange an interview today.
Will schools reopen before semester ends? Georgia Southern pandemic expert can give perspective
While education has moved into homes across the country because of the COVID-19 pandemic, people are wondering if the shutdowns will actually help stop the spread of the disease. Isaac Chun-Hai Fung, Ph.D., a digital health expert and infectious disease epidemiologist at Georgia Southern University, said school closures can delay the peak of the outbreak, reduce the amount of cases and decelerate the spread of the virus. Fung was a part of a study in 2015 that modeled a potential flu pandemic. The study showed that delaying the spread of a virus can give health care professionals more time to come up with vaccines and other treatments, as well as giving the system time to brace itself for the onslaught of patients. “The key message of my paper is not necessarily how quickly we shut down schools,” Fung told Rolling Stone. “It is the duration of school closure that matters. Whenever we relax social distancing measures, we will see a bounce-back of the cases, unless we are able to completely block all transmission chains and have driven the case number to zero — i.e., extinction of the virus, as in the case of SARS in 2003.” While some think opening schools and other public places would benefit the economy, Fung said doing so could leave the country vulnerable. “To save the U.S. economy, we must control this disease first,” Hung said to Rolling Stone. “That is what China is going to achieve — even if they have already suffered a great deal economically due to COVID-19. That is why (Narendra) Modi asks the whole of India to stay home for three weeks. That is also what Boris Johnson asks the British people to do now. The Americans should take heed.” Fung analyses social media data for public health surveillance and health communication and uses digital technologies for public health interventions. He investigates the transmission of communicable diseases with a focus on respiratory infections and environmentally transmitted infections. He applied a variety of methods, from classical statistical methods to machine learning and mathematical modeling, to address public health problems and to provide solutions to policymakers. He is especially interested in assisting public health agencies in their responses to public health emergencies. Fung is available to speak with media regarding this topic — simply reach out to Georgia Southern Director of Communications Jennifer Wise at jwise@georgiasouthern.edu to arrange an interview.
United Nations Report Warns of Potential Extinction of One Million Plant and Animal Species
The United Nations has issued an assessment sounding the alarm that one million plant and animal species are at risk of extinction due to human-related changes to the Earth’s natural landscapes. This poses a dire threat to ecosystems upon which people all over the world are dependent for survival, according to a New York Times report. The human degradation of the environment has further been exacerbated by global warming, it added. “Biodiversity is caught between the stark, local effects of human action, like deforestation, and the diffuse but steadily worsening global effects like climate change. This report says the combination is more devastating than the sum of its parts,” stated Adam Langley, PhD, an associate professor in Villanova University’s Department of Biology. Consumerism is a driving factor in the rapidly deteriorating situation, Dr. Langley said. “It’s becoming clear that no amount of information can overwhelm the will of the consumer, whether it's the greed of the wealthy or desperation of the poor. Producers and consumers act out of personal interests, not out of their fondness for wildlife.” Government action must lead the way in alleviating the severity of the direction in which biodiversity loss is headed, according to Dr. Langley. “To make the drastic changes we need, the solutions must come from the top. Governments must recognize the enormous subsidy we receive from intact ecosystems in the form of food, fiber, clean water and air. In our world, valuing biodiversity means putting a price on it—and paying the price when we degrade it.” He added, “When I see reports like this, I’m struck that, in the history of Earth, we are the first species that is able for foresee an extinction event. We can predict it in painful detail. Avoiding that demise would be truly unique, but we’ve yet to see if human nature has that capacity.”
Record freezing temperatures and global warming – let our experts explain
This week has seen temperatures drop to record lows. Across the mid-west, a polar vortex coupled with biting winds saw temperatures plunge below minus 50 degrees Fahrenheit. As the word has been focusing on climate change, its causes and effects – this week stands as a stellar example of the impacts of global warming. Despite the tweets and trolls of prominent politicians somehow aligning a deep freeze as a counter argument for climate change the evidence is becoming more clear - with global warming, comes warnings far more worrisome. Dr. Pamela Grothe, an Assistant Professor in the Department of Earth and Environmental Sciences at the University of Mary Washington, was recently quoted in the Guardian about how global warming is forecasting a grim future at the rate we are going. “Warmer temperatures and associated lower oxygen levels in the ocean are sufficient to explain the observed extinctions we see in the fossil record”, she says. “We are already seeing warming ocean temperatures and lower oxygen in many regions, currently affecting marine ecosystems. If we continue in the trajectory, we are on with current emission rates, this study highlights the potential that we may see similar rates of extinction in marine species as in the end of the Permian.” And is this just the beginning? What other extremes can we expect to see in our weather? Can that trajectory Dr. Grothe reference be turned around or slowed down? And what species are the most vulnerable and what ripple effect will that have on our oceans? There are a lot of questions to be asked – and that’s where the experts from the University of Mary Washington can help. Dr. Pamela Grothe is an assistant professor in the Department of Earth and Environmental Sciences as the University of Mary Washington. She recently completed a Ph.D. in the Paleoclimatology Lab at the Earth and Atmospheric Sciences department at Georgia Institute of Technology. Her current research involves a study of the central Pacific climate and El Niño Southern Oscillation (ENSO) variability over the past 6000 years through the analysis of coral fossil records. She’s an #expert in climate change and is available to speak with media – simply click on her icon to arrange an interview.
Anil Jain, who launched the world's premier biometrics lab, can talk about all facets of facial recognition technology--from human trafficking to protecting primates. Source:
