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Learn how to classify species at high risk of global extinction using the IUCN Red List system. This publication provides guidelines, brochures and translations for the assessment system.
(1) IUCN Red List Categories and Criteria: Version 3.1 (IUCN 2001 and later editions) (2) The latest version of the Guidelines for Using the IUCN Red List Categories and Criteria (available from www.iucnredlist.org/documents/RedListGuidelines.pdf; check the IUCN Red List website for regular updates of this document)
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The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction. It divides species into nine categories: Not Evaluated, Data Deficient, Least Concern, Near Threatened, Vulnerable, Endangered, Critically Endangered, Extinct in the Wild and Extinct.
SUMMARY OF THE FIVE CRITERIA (A-E) USED TO EVALUATE IF A TAXON BELONGS IN AN IUCN RED LIST THREATENED CATEGORY (CRITICALLY ENDANGERED, ENDANGERED OR VULNERABLE).1 AND at least one of C1 or C2 C2. An observed, estimated, projected or inferred continuing decline AND at least 1 of the following 3 conditions: Number of mature individuals C1.
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Há 1 dia · Abstract. The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction. The general aim of the system is to provide an explicit, objective framework for the classification of the broadest range of species according to their extinction risk.
15 de mar. de 2023 · Learn how the IUCN classifies species at high risk of global extinction using the Red List Categories and Criteria, adopted in 2001. Find out the criteria for each category and the sources and comments behind the system.
species assessed. 44,016. threatened species. A barometer of life. The IUCN Red List is a critical indicator of the health of the world’s biodiversity. It is a powerful tool to inform conservation action and policy.
