A declining trend for the population is also important and both factors are used in the IUCN Red List, she said.
Prof Georgina Mace, of University College London, said: “This new analysis re-emphasises some startling facts about the extent to which vertebrate populations have been reduced worldwide by human activities.” But she said she was not convinced that simply having a population less than 1,000 was the best measure of a species being on the brink. A boom in urchins devastated kelp forests in the Bering Sea, leading to the extinction of the kelp-eating Steller’s sea cow. Known examples of this include the overhunting of sea otters, the main predator of kelp-eating sea urchins. Scientists discovered that 388 species of land vertebrate had populations under 5,000, and the vast majority (84%) lived in the same regions as the species with populations under 1,000, creating the conditions for a domino effect. Most of these mammals, birds, reptiles and amphibians were found in tropical and subtropical regions. The researchers identified 515 species with populations below 1,000 and about half of these had fewer than 250 remaining. The analysis, published in the journal Proceedings of the National Academy of Sciences, examined data on 29,400 land vertebrate species compiled by the IUCN Red List of Threatened Species and BirdLife International. “We are facing our final opportunity to ensure that the many services nature provides us do not get irretrievably sabotaged,” said Prof Gerardo Ceballos of the National Autonomous University of Mexico, who led the research. Photograph: Gerardo Ceballos/University of Mexico/PA Please do not discuss the concept of the autotldr bot here.Harlequin frog. NOTICE: This thread is for discussing the submission topic. Post found in /r/environment, /r/news, /r/Seattle, /r/environment, /r/marinebiology, /r/environment, /r/u_NumerousRow, /r/TopScience, /r/TrendingQuickTVnews, /r/ScienceFeed, /r/AutoNewspaper and /r/NYTauto. Summary Source | FAQ | Feedback | Top keywords: heat #1 wave #2 salmon #3 temperature #4 mussel #5 Heat Wave Hits North AmericaAs suffocating heat hits much of Western North America, experts are concerned about human safety and power failures.
One key takeaway, the country is getting hotter. Growing Energy Shortages: Power failures have increased by more than 60 percent since 2015, even as climate change has made heat waves worse, according to new research published in the journal Environmental Science & Technology. Now, with climate change worsening heat waves and droughts, scientists say the conditions look grim without intense intervention, which comes with its own risks. While the heat wave over the Pacific Northwest has eased, punishing temperatures have persisted across much of the American West. Harley took in the eye-popping weather forecasts, he thought about how low the tide would be at midday, baking the exposed mussels, sea stars and barnacles. This is the best tl dr I could make, original reduced by 88%.
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