Endangered Species

Topics: Endangered species, IUCN Red List, Tiger Pages: 8 (2469 words) Published: June 22, 2013
Endangered species
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For other uses, see Endangered species (disambiguation).
"Endangered" redirects here. For other uses, see Endangered (disambiguation). Conservation status|
|
By risk of extinction|
Extinct|
Extinct (List)
Extinct in the Wild (List)|
Threatened|
Critically Endangered (List)
Endangered (List)
Vulnerable (List)|
At lower risk|
Conservation Dependent (List)
Near Threatened (List)
Least Concern|
See also
IUCN Red List
International Union for Conservation of Nature
Lists of organisms by population|
* v * t * e|
An endangered species is a species of organisms facing a very high risk of extinction. The phrase is used vaguely in common parlance for any species fitting this description, but its use by conservation biologists typically refers to those designated Endangered in the IUCN Red List, where it is the second most severe conservation status for wild populations, following Critically Endangered. There are currently 3079 animals and 2655 plants classified as Endangered worldwide, compared with 1998 levels of 1102 and 1197, respectively.[1] The amount, population trend, and conservation status of each species can be found in the Lists of organisms by population. Many nations have laws offering protection to conservation reliant species: for example, forbidding hunting, restricting land development or creating preserves. Contents * 1 Conservation status * 2 IUCN Red List * 2.1 United States * 2.1.1 NatureServe conservation status * 3 Climate change * 4 Conservation * 4.1 Captive breeding * 4.2 Private farming * 5 Gallery * 6 See also * 7 Notes * 8 References * 9 External links| Conservation status[edit]

Main article: Conservation status
The conservation status of a species is an indicator of the likelihood of that endangered species becoming extinct. Many factors are taken into account when assessing the conservation status of a species, including statistics such as the number remaining, the overall increase or decrease in the population over time, breeding success rates, known threats, and so on.[2] The IUCN Red List of Threatened Species is the best-known worldwide conservation status listing and ranking system.[3] It has been estimated that over 40% of all living species on Earth are at risk of going extinct.[4] Internationally, 199 countries have signed an accord agreeing to createBiodiversity Action Plans to protect endangered and other threatened species. In the United States this plan is usually called a species Recovery Plan. IUCN Red List[edit]

The Siberian tiger is a subspecies of tiger that is endangered; threesubspecies of tiger are already extinct. (See: List of carnivorans by population)[5] IUCN Red List refers to a specific category of threatened species, and may include critically endangered species. The IUCN Red List uses the term endangered species as a specific category of imperilment, rather than as a general term. Under the IUCN Categories and Criteria, endangered species is between critically endangered and vulnerable. Also critically endangered species may also be counted as endangered species and fill all the criteria The more general term used by the IUCN for species at risk of extinction is threatened species, which also includes the less-at-risk category of vulnerable species together with endangered and critically endangered. IUCN categories, and some animals in those categories, include: * Extinct: Examples: Atlas bear, aurochs, Bali tiger, blackfin cisco, Caribbean monk seal, Carolina parakeet, Caspian tiger, dinosaurs, dodo, dusky seaside sparrow, eastern cougar, elephant bird, golden toad, great auk, Haast's eagle, Japanese sea lion, Javan tiger, labrador duck, moa, passenger pigeon, pterosaurs, saber-toothed cat, Schomburgk's deer, short-faced bear, Steller's sea cow, thylacine, toolache wallaby, western black...
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