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Extinction is the termination of a taxon by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a ...
Established in 1964, The International Union for Conservation of Nature’s Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species. The IUCN Red List is a critical indicator of the health of the world’s biodiversity.
2 de nov. de 2020 · 5. Freshwater species declining faster than anything else. Populations of freshwater wildlife species are declining disportionately faster than others, dropping byan average of 84%between 1970 and 2018, WWF’s Living Planet Report 2020 showed. The figure also marks arise of 1% on the 83%reported two years ago. 6.
24 de oct. de 2019 · Planet Earth teems with life and includes thousands of species of vertebrate animals (mammals, reptiles, fish, and birds); invertebrates (insects, crustaceans, and protozoans); trees, flowers, grasses, and grains; and a bewildering array of bacteria, and algae, plus single-celled organisms—some inhabiting scalding deep-sea thermal vents. And yet, this rich profusion of flora and fauna seems ...
22 de sept. de 2023 · The article provides a detailed list of 25 extinct animals, including the Tasmanian Tiger, Woolly Mammoth, Dodo, Passenger Pigeon, and the Mexican Grizzly Bear, among others, explaining the reasons behind their extinction. The main causes of extinction today include habitat loss and fragmentation, over-exploitation of wildlife, introduction of ...
30 de abr. de 2007 · Story | 30 Apr, 2007 Species extinction The facts
Since 1500 CE a third and still greater wave of extinction has been growing. This third wave is being driven ultimately by growth of the global human population, increased consumption of natural resources, and globalization. It is affecting a wider range of animals and plants than the preceding two extinction waves, in the oceans as well as on land 5. Our knowledge of which species have gone ...
