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158 news posts in Environment

Environment

26 Oct 2021

Waters off French coast in winter may be a deadly trap for small, foraging turtles

By Tania Fitzgeorge-Balfour, Science writer A tracked loggerhead turtle on the beach with satellite tracker attached to its shell. Image: Oceane Cottier Aquarium La Rochelle SAS Turtle habitat boundaries should be updated to include European waters, suggests a new study tracking stranded turtles rescued from the French coast. Their movements after release back into the Bay of Biscay appear related to their size, with larger individuals swimming westwards towards their birth home in the US or Africa, and smaller individuals potentially trapped in the region for winter. These findings will inform strategies to ensure stranded turtles survive after their release. The documented habitat boundaries of the loggerhead, Kemp’s ridley and green turtles are questioned by a new study suggesting that stranded turtles rescued from European French Atlantic and Channel waters could be visiting the area to forage for food. Published in Frontiers in Marine Science, satellite tracking data reveals that while some turtles may be able to return home, after their rehabilitation and release to Florida in the US, or Cape Verde off the African coast, younger individuals are at risk of being trapped in the region. “Stranded turtles that were tracked swimming westwards presumably towards their birth homes, after […]

Environment

06 Oct 2021

Surprising discovery in Arctic songbird may reveal how it survives challenging migrations

By K.E.D Coan, science writer Snow buntings in winter. Image: Mircea Costina/Shutterstock.com There is still much to learn about how Arctic migratory birds adjust their physiology during different phases of their life. For example, between winter and summer habitats, or during migration. A recent study published to Frontiers shows the first evidence that snow buntings keep their winter traits through migration. These findings may help researchers understand why snow bunting populations are declining, as well as expanding what is known about how buntings, and other species, endure Arctic weather. Snow buntings are equipped for winter even while migrating to their breeding grounds, shows a recent study in Frontiers in Ecology and Evolution. There have been major declines in biodiversity around the world and the snow bunting population has dropped 60% over the last 45 years. The specific cause of this drop is unknown, and this study is among the first to look at the physiological changes that occur during the different life stages of this species (ie between winter and migration). This work provides clues into the future survival of snow buntings, as well as new insights into how species generally endure the harsh cold of the Arctic. ► Read original […]

Environment

23 Sep 2021

Bat guts become less healthy through diet of ‘fast food’ from banana plantations

By Tania Fitzgeorge-Balfour, science writer Pallas’s long-tongued bat (Glossophaga soricina) feeding on banana flowers. Image credit: Julian Schneider New research reveals there is a stark difference between the gut bacteria of nectar-feeding bats foraging in conventional monoculture banana plantations and those bats who forage in their natural forest habitat or organic plantations. This is the first study to show an association between habitat alteration, sustainable agriculture and the gut microbiota of wildlife. Nectar-feeding bats foraging in intensively managed banana plantations in Costa Rica have a less diverse set of gut microbes in comparison to bats feeding in their natural forest habitat or organic plantations, reveals new research published today in Frontiers in Ecology and Evolution. This the first study to show an association between habitat alteration, sustainable agriculture and the gut microbiota of wildlife. “Organic and conventional monoculture banana plantations both provide a very reliable food source for some nectar-feeding bat species. However, bats foraging in the intensively managed plantations had a reduced diversity of gut microbes, which could be a sign of gut dysbiosis, an unhealthy imbalance of its microbial symbionts,” explains Priscilla Alpízar, first author of this study, a doctoral student at the Institute of Evolutionary Ecology and […]

Environment

24 Jun 2021

A dog’s life: James A Serpell and his investigation into the origin story of mankind’s best friend

By Colm Gorey, Frontiers science writer/Prof James Serpell, University of Pennsylvania Prof James A Serpell, University of Pennsylvania. Image: University of Pennsylvania Two distinctly different stories have been created to explain how fearsome, wild wolves were first domesticated by humans, according to Prof James A Serpell of the University of Pennsylvania and the Wallis Annenberg PetShape Leadership Institute. However, in the open access journal Frontiers, he recently published a paper investigating the truth of these claims. Despite being considered mankind’s best friend, the ancestors of modern dogs were a lot less welcoming to human owners. However, trying to trace the timeline of when early humans first domesticated wild wolves to serve their needs has proven difficult. One of the most prevalent origin stories in scientific literature suggests the ‘commensal scavenger hypothesis’. This posited that wolves essentially domesticated themselves by invading ancient human settlements in search of animal remains and other edible waste discarded by hunter-gatherers. Over time, tolerance by humans gave a selective advantage to the bolder, less fearful wolves, which then diverged from the ancestral population as they adapted to the new scavenging niche. An alternative hypothesis – sometimes referred to as the pet keeping or cross-species adoption hypothesis […]

Environment

04 Mar 2021

Seagrass loss around the UK may be much higher than previously thought

By Suzanna Burgelman, Frontiers science writer Dogfish between seagrass. Image: Frogfish Photography The United Kingdom (UK) could have lost as much as 92% of historic seagrass meadows, a new study shows. These seagrass meadows are an essential part of healthy marine ecosystems, supporting the UK’s fish stocks, and helping to absorb and trap carbon from the atmosphere. The research highlights an urgent need to protect and restore current and degrading seagrass meadows. The loss of seagrass in the waters around the UK is much higher than previously estimated. A new study published in Frontiers in Plant Science concludes that, with high certainty, at least 44% of the UK’s seagrasses have been lost since 1936, of which 39% has been since the 1980s. This study is one of the first of its kind to bring together seagrass data from diverse sources and give a systematic estimate of the current and historic extent of seagrass, as well as seagrass loss in the UK. The study was a collaboration between researchers at University College London, Kings College London, and Swansea University. Read original article Download original article (pdf) Seagrasses as climate change superheroes Nature-based solutions are essential to mitigate the effects of the […]