Yahoo Search Busca da Web

Resultado da Busca

  1. An IUCN Red List Critically Endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild.

  2. This is a complete list of critically endangered mammalian species and subspecies evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such. Species and subspecies which have critically endangered subpopulations (or stocks) are indicated.

    • Categories
    • Versions
    • Criticism
    • See Also
    • External Links

    Species are classified by the IUCN Red List into nine groups, specified through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmentation. There is an emphasis on the acceptability of applying any criteria in the absence of high quality data including suspicion and po...

    There have been a number of versions, dating from 1991, including: 1. Version 1.0 (1991) 2. Version 2.0 (1992) 3. Version 2.1 (1993) 4. Version 2.2 (1994) 5. Version 2.3 (1994) 6. Version 3.0 (1999) 7. Version 3.1 (2001) All new IUCN assessments since 2001 have used version 3.1 of the categories and criteria.

    In 1997, the IUCN Red List received criticism on the grounds of secrecy (or at least poor documentation) surrounding the sources of its data. These allegations have led to efforts by the IUCN to improve its documentation and data quality, and to include peer reviews of taxa on the Red List.The list is also open to petitions against its classificati...

    IUCN Red List on Facebook
    IUCN Red List on Twitter
  3. Espécie em perigo crítico é a categoria de espécies de fungos, plantas e animais que correm o maior risco de extinção, conforme classificação atribuída pela IUCN. Essas espécies são incluídas na Lista Vermelha da IUCN. Atualmente existem 2 129 animais e 1 821 plantas assim avaliados, enquanto em 1998 os números eram 854 ...

  4. The IUCN Red List is the world's most comprehensive information source on the global conservation status of animal, fungi and plant species. It divides species into nine categories, from Not Evaluated to Extinct, based on their risk of extinction. Learn more about the criteria and examples of Critically Endangered species.

  5. 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. Red List partners and support.

  6. Pages in category "Critically endangered animals". The following 104 pages are in this category, out of 104 total. This list may not reflect recent changes .