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19 cze 2015 · A growing body of evidence indicates that current species extinction rates are higher than the pre-human background rate (8–15), with hundreds of anthropogenic vertebrate extinctions documented in prehistoric and historic times (16–23).
21 maj 2024 · With nearly one million plant and animal species currently under threat, the ripple effect of the extinction of a single species can affect countless others, disrupting vital ecological...
4 gru 2020 · Only 23% of species and 16% of its habitats are in good health; 1,677 out of 15,060 European species are threatened with extinction; most endangered are snails, clams and fish; 6 animal, bird and fish species, including the Saiga antelope, the gyrfalcon and the Persian leopard, are facing risk of extinction in Russia
Key insights on Biodiversity. On average, there has been a large decline across tens of thousands of wildlife populations since 1970. Not all animal populations are in decline; around half have increasing numbers. Wild mammals have declined by 85% since the rise of humans.
15 maj 2001 · The Red List Index shows trends in overall extinction risk for groups of species. It is an index between 0 and 1. A value of 1 indicates that there is no current extinction risk to any of the included species. A value of 0 would mean that all included species are extinct.
23 lis 2022 · The ongoing species extinction rates, which reached the 1% level on land and the 0% level in seas from 1800–1900 to 2010 1, 2, 3, are far from the major mass extinction magnitude (> 60%) 4;...
10 cze 2019 · An assessment of global extinction in plants shows almost 600 species have become extinct, at a rate higher than background extinction levels, with the highest rates on islands, in the...
