Friday, 3 June 2011

species

IUCN classifies species into nine groups, set through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmentation:

Extinct (EX) - No individuals remaining.

Extinct in the Wild (EW) - Known only to survive in captivity, or as a naturalized population outside its historic range.

Critically Endangered (CR) - Extremely high risk of extinction in the wild.

Endangered (EN) - High risk of extinction in the wild.

Vulnerable (VU) - High risk of endangerment in the wild.

Near Threatened (NT) - Likely to become endangered in the near future.

Least Concern (LC) - Lowest risk. Does not qualify for a more at risk category.

Data Deficient (DD) - Not enough data to make an assessment of its risk of extinction.

Not Evaluated (NE) - Has not yet been evaluated against the criteria.

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