Critically endangered.html
 
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Conservation status
Risk of extinction
Extinction

Extinct
Extinct in the Wild
Threatened

Critically Endangered
Endangered
Vulnerable
Threatened
Lower risk

Conservation Dependent
Near Threatened
Least Concern
See also

World Conservation Union
IUCN Red List

Organisms with a conservation status of critically endangered have an extremely high risk of becoming extinct.

Contents

IUCN Category

The Critically Endangered status, in relation to other IUCN Red List categories

The World Conservation Union (IUCN), widely considered to be the most objective and authoritative system for classifying species in terms of the risk of extinction,1 lists 3246 species (1665 animals, 1575 plants, 6 fungi, lichens and algae)2 of the world as being critically endangered in their 2008 Red List.

Critically endangered is the highest risk category assigned by the IUCN for wild species. Critically endangered means that a species numbers have decreased, or will decrease, by 80% within three generations.3

As the IUCN does not consider a species extinct until extensive, targeted surveys have been conducted, species which are possibly extinct are still listed as "Critically Endangered". A new category for "Possibly Extinct" has been suggested by BirdLife International to categorize these taxa.

Mammals

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Pilosa

Odd-toed ungulates

Even-toed ungulates

Cetacea

Carnivores

Bats

Primates

Lagomorphs

Marsupials

Insectivores

Crocodilians

Squamata

Amphibians

Fish

Fungi

Birds

Anseriformes

Apodiformes

Charadriiformes

Ciconiiformes

Columbiformes

Falconiformes

Galliformes

Gruiformes

Passeriformes

Piciformes

Procellariiformes

Psittaciformes

Strigiformes

See also

References

  1. ^ "Birds on the IUCN Red List". BirdLife International. Retrieved on 2007-02-01.
  2. ^ "2008 Red List summary statistics". IUCN Red List. Retrieved on 2008-10-28.
  3. ^ "Apes extinct in a generation". BBS. Retrieved on 2005-09-01.
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