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Nature's backbone at risk
Date:10/26/2010

hic range. Species listed as Critically Endangered, Endangered or Vulnerable are collectively described as 'Threatened'.

The IUCN Red List is not just a register of names and associated threat categories. It is a rich compendium of information on the threats to the species, their ecological requirements, where they live, and information on conservation actions that can be used to reduce or prevent extinctions.

The IUCN Red List threat categories

The IUCN Red List threat categories are as follows,in descending order of threat:

  • Extinct or Extinct in the Wild;
  • Critically Endangered, Endangered and Vulnerable: species threatened with global extinction;
  • Near Threatened: species close to the threatened thresholds or that would be threatened without ongoing specific conservation measures;
  • Least Concern: species evaluated with a lower risk of extinction;
  • Data Deficient: no assessment because of insufficient data.
  • Critically Endangered (Possibly Extinct): This is not a new Red List category, but is a flag developed to identify those Critically Endangered species that are in all probability already Extinct but for which confirmation is required (for example, through more extensive surveys being carried out and failing to find any individuals).


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Contact: Lynne Labanne
lynne.labanne@iucn.org
IUCN
Source:Eurekalert

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