Definitions for threatened species

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  1. threatened species(Noun)

    Any species of organism that is vulnerable to extinction in the near future

Freebase

  1. Threatened species

    Threatened species are any species which are vulnerable to endangerment in the near future. The World Conservation Union is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened: ⁕Vulnerable species ⁕Endangered species ⁕Critically endangered species Species that are threatened are sometimes characterised by the population dynamics measure of critical depensation, a mathematical measure of biomass related to population growth rate. This quantitative metric is one method of evaluating the degree of endangerment. Less-than-threatened categories are Near Threatened, Least Concern, and the no longer assigned category of Conservation Dependent. Species which have not been evaluated, or do not have sufficient data also are not considered "threatened" by the IUCN. Although threatened and vulnerable may be used interchangeably when discussing IUCN categories, the term threatened is generally used to refer to the three categories, while vulnerable is used to refer to the least at risk of those three categories. They may be used interchangeably in most contexts however, as all vulnerable species are threatened species; and, as the more at-risk categories of threatened species must, by definition, also qualify as vulnerable species, all threatened species may also be considered vulnerable.

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"threatened species." Definitions.net. STANDS4 LLC, 2014. Web. 25 Oct. 2014. <http://www.definitions.net/definition/threatened species>.

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