One-quarter of UK mammals face threat of extinction

July 31, 2020 by  
Filed under Eco, Green

While tigers and elephants regally pose for endangered animal posters, many smaller creatures are fading away unnoticed. Now scientists are bringing attention to the dire outlook for less glamorous native U.K. mammals, claiming that one-quarter of them are at imminent risk of extinction. The scientists put 11 mammals on the U.K.’s first official Red List of endangered species . This list categorizes species according to their conservation status, using internationally agreed upon criteria. Related: Right Whales now ranked as critically endangered species “When we draw all the evidence together — about population size and how isolated and fragmented those populations are — we come up with this list of 11 of our 47 native species being threatened imminently,” Fiona Mathews of the Mammal Society told BBC News. “And there are more species that are categorized as ‘near threatened’.” The study concluded that the Scottish wildcat and the greater mouse-eared bat are the U.K.’s most critically endangered mammals. Beaver, red squirrel, water vole and grey long-eared bats ranked as endangered. The vulnerable category included the hedgehog, hazel dormouse, Orkney vole, Serotine bat and Barbastelle bat . “The three categories of threat — critically endangered, endangered and vulnerable — tell you about the probability of the animal becoming extinct within this imminent timeframe,” Mathews said. The U.K. Red List was produced for official nature agencies of England, Wales and Scotland and has been approved by the International Union for the Conservation of Nature ( IUCN ). The biggest reason for plummeting populations is habitat loss. A 2019 report on U.K. wildlife called the country among the most nature-depleted in the world. Many animal species in the U.K. have decreased by an average of 60% since 1970. Invasive species are another factor. Disease-ridden grey squirrels moved in and killed off endangered red squirrels, who lost more than 60% of their range just in the last 13 years. American mink that escaped from fur farms — and who can blame them — ate many native water voles. Scientists lacked enough information to assess the status of some mammals, including the wild boar and whiskered bat. They assigned five animals into the “near threatened” category, meaning they’re slightly too populous to make the Red List: the mountain hare, harvest mouse, lesser white-toothed shrew, Leisler’s bat and Nathusius’ pipistrelle. Via The Guardian and BBC Image via Peter Trimming

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One-quarter of UK mammals face threat of extinction

MIT engineers devise algorithm to identify warning signs of extreme weather events

September 25, 2017 by  
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Extreme events – like a rogue wave, hurricane , or sudden extinction – often seem to strike with few hints beforehand. But what if we could predict these events before they even form? Two Massachusetts Institute of Technology (MIT) engineers came up with a framework, a computer algorithm , to spot patterns that come before such an event. According to MIT , their method may help anticipate “hotspots of instability affecting climate , aircraft performance, and ocean circulation.” It can be incredibly difficult to foresee extreme events, since many systems are complex, with many players or factors. The new MIT algorithm can be applied to a large range of systems to search for warning signs. In the past, researchers have tried to predict extreme events by solving mathematical models. But often scientists don’t fully understand the mechanisms shaping complex systems, which can lead to model errors. Related: INFOGRAPHIC: Countries where you are most likely to die from extreme climate events The new algorithm blends equations with available data . Sapsis said, “We are looking at the equations for possible states that have very high growth rates and become extreme events, but they are also consistent with data, telling us whether this state has any likelihood of occurring, or if it’s something so exotic that, yes, it will lead to an extreme event, but the probability of it occurring is basically zero.” MIT explained their algorithm acts as a sieve to catch precursors, or warning signs, that would be seen in the real world. To test their framework, they simulated a turbulent fluid flow and searched for precursors their framework predicted. Those precursors turned into extreme events, according to MIT, between 75 and 99 percent of the time. Sapsis said in a statement, “If you can predict where these things occur, maybe you can develop some control techniques to suppress them.” The journal Science Advances published the research late last week. Via MIT News and Inverse Images via Wikimedia Commons and Jose-Luis Olivares/MIT

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MIT engineers devise algorithm to identify warning signs of extreme weather events

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