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The world's 100 most threatened species. Silky sifaka ( Propithecus candidus ), fewer than 1,000 still alive. The World's 100 most threatened species [1] is a compilation of the most threatened animals, plants, and fungi in the world. It was the result of a collaboration between over 8,000 scientists from the International Union for ...
The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction. It divides species into nine categories: Not Evaluated, Data Deficient, Least Concern, Near Threatened, Vulnerable, Endangered, Critically Endangered, Extinct in the Wild and Extinct .
Vulnerable, Endangered and Critically Endangered species are considered to be threatened with extinction. The IUCN Red List will be updated with thousands of new species assessments and reassessments on Monday 11 December 2023.
Article. Vocabulary. An endangered species is a type of organism that is threatened by extinction. Species become endangered for two main reasons: loss of habitat and loss of genetic variation. Loss of Habitat. A loss of habitat can happen naturally. Nonavian dinosaurs, for instance, lost their habitat about 65 million years ago.
How many species are threatened? Species assessed as Critically Endangered (CR), Endangered (EN), or Vulnerable (VU) are referred to as "threatened" species. However, Extinct in the Wild (EW) species can move into the threatened categories following successful reintroduction.
Coral species are moving towards increased extinction risk most rapidly, while amphibians are, on average, the most threatened animal group. An RLI value of 1.0 equates to all species qualifying as Least Concern (i.e., not expected to become Extinct in the near future).
World Wildlife Fund - The leading organization in wildlife conservation and endangered species. Learn how you can help WWF make a difference.
