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148 news posts in Environment

Environment

21 Feb 2022

Peace has led to more deforestation in Colombia

By K.E.D. Coan, science writer Difference between reserve and cattle ranches in Colombia. Image credit: Sebastian Di Domenico / Shutterstock In the tropics, when conflict affected countries transition to peace, deforestation often increases. But the reasons behind this trend are neither simple nor generalizable, reports a new study from Colombia. By looking at a range of agricultural and societal drivers at multiple scales, this research shows that different factors promote forest loss. Accounting for these variations will be important for developing more effective conservation strategies in the future. The consequences of peace and armed conflict for deforestation depend on the location, reports a new publication in Frontiers in Environmental Science. Using Colombia as a case study, this work presents one of the most comprehensive studies to date comparing forest loss to drivers such as coca cultivation and cattle farming during periods of peace and conflict. These insights will help make conservation efforts more effective by taking into account the land use, politics and socioeconomics on a local level. “There are other studies that show increased pressure on forests after peace agreements, but our results show that it’s very hard to generalize deforestation in the context of conflict,” said co-author Raphael […]

Environment

26 Jan 2022

Scientists decode 450 years of boom and crisis in Europe from ages of building timber

By Mischa Dijkstra, Frontiers science writer Roof truss of the Chapelle Saint-Denis in Marmoutier in Alsace, France, from the 16th century. Credit: Willy Tegel Scientists have reconstructed European socio-economic cycles between 1250 and 1699 in unprecedented detail, by using the power of tree rings to reveal the exact age of more than 54,000 pieces of timber from historical buildings. Tracking building activity across the years, estimated from felling year of timber from historical buildings, can yield an unrivaled economic record for premodern Europe. That is the conclusion from a vast study by a consortium of scientists across Europe, published in Frontiers in Ecology and Evolution. By dating timber from tree rings – to the exact year of felling – from historical buildings, and statistically analyzing the distribution of building years, the authors deduce multiple periods of socio-economic prosperity and downturn between 1250 and 1699, independent from other historical data. Crucially, they show how different European regions were differentially affected, and at different times. When historical records are too scant to reconstruct large-scale demographic and societal changes, environmental measures can be used. For example, numbers of shipwrecks have been used in past research to chart trade intensity, pollen to reconstruct agricultural […]

Environment

17 Dec 2021

No more ‘We’re going to Ibiza’? Between 56 and 65% of beach area in the Balearic Islands will be permanently lost due to the climate crisis

By Mischa Dijkstra, Frontiers science writer Image credit: Anna Ok / Shutterstock.com Scientists use complex mathematical modeling of sea states, sea level rise, and local geography to predict the permanent loss of between 56 and 65% of the current area of sandy beaches in the Balearic Islands by the end of the 21st century, depending on the global warming scenario. During extreme weather conditions such as the strongest storm surges with the highest waves, between 84 and 86% of the beach area will be flooded. The impact of the climate crisis on coastal areas has been well documented, but new research has shown the impact it may have on the beaches found on the Balearic Islands in the north-western Mediterranean. Findings published in Frontiers in Marine Science showed that the archipelago – heavily reliant on tourism – could lose most of its beaches. “Much of the income of touristic regions in the Mediterranean comes from beach and sun tourism: more than 25% in the case of the Balearic Islands. This means that it is essential to predict the fate of these beaches under climate change,” said first author Miguel Agulles, a PhD student at the Oceanographic Center of the Balearic […]

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 […]