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Red List

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

The Red List, created by the International Union for Conservation of Nature (IUCN), is a comprehensive inventory that assesses the global conservation status of plant and animal species. It categorizes species based on their risk of extinction, aiming to raise awareness and guide conservation actions.

5 Must Know Facts For Your Next Test

  1. The IUCN Red List categorizes species into nine groups including 'Least Concern,' 'Vulnerable,' 'Endangered,' and 'Critically Endangered.'
  2. Over 138,300 species have been assessed in the latest version of the Red List.
  3. The criteria used for assessment include population size, rate of decline, area of geographic distribution, and degree of population fragmentation.
  4. The Red List is a critical tool used by governments, NGOs, and researchers to prioritize conservation efforts.
  5. Species listed as Critically Endangered face an extremely high risk of extinction in the wild.

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