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The IUCN Red List of Threatened Species provides taxonomic, conservation status, distribution and other information on taxa that have been evaluated using the IUCN Red List Categories and Criteria. This system is designed to determine the relative risk of extinction, and the main purpose of the IUCN Red List is to catalogue and highlight those taxa that are facing a higher risk of global extinction. The IUCN Red List also includes information on taxa that are categorized as Extinct or Extinct in the Wild; on taxa that cannot be evaluated because of insufficient information; and on Near Threatened taxa which are either close to meeting the threatened thresholds or that would be threatened were it not for an ongoing taxon-specific conservation programme. In addition, the IUCN Red List also lists all the taxa that have been evaluated and are considered to be non-threatened i.e. are listed as Least Concern. Hence one can use the Red List to get complete lists of all described species and their conservation assessments for certain taxonomic groups, e.g. birds, amphibians, cycads, etc.

Disciplines:

• Science and Technology  / Biology  / Ecology and Conservation Biology