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" ..an attempt to establish a species, for the purpose of conservation, outside its recorded distribution, but within an appropriate habitat and ecogeographical area"). 2. Nature of the categories All taxa listed as Critically Endangered qualify for Vulnerable... "
1996 IUCN Red List of Threatened Animals - Página 365
por Ulf Gärdenfors, A. J. Stattersfield, International Union for Conservation of Nature and Natural Resources. Species Survival Commission - 1996 - 448 páginas
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IUCN Red List Categories and Criteria

International Union for Conservation of Nature and Natural Resources - 2001 - 35 páginas
...some taxa in high-risk categories does not necessarily mean their initial assessment was inaccurate. All taxa listed as Critically Endangered qualify for...categories are described as 'threatened'. The threatened categories form a part of the overall scheme. It will be possible to place all taxa into one of the...
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Equids--zebras, Asses, and Horses: Status Survey and Conservation Action Plan

Patricia Des Roses Moehlman, IUCN/SSC Equid Specialist Group - 2002 - 212 páginas
...some taxa in high-risk categories does not necessarily mean their initial assessment was inaccurate. All taxa listed as Critically Endangered qualify for...categories are described as 'threatened'. The threatened categories form a part of the overall scheme. It will be possible to place all taxa into one of the...
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