Guidelines for Using the IUCN Red List Categories and Criteria | 水產百科網

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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. Read More

All assesments being prepared for publication on The IUCN Red List must use the IUCN Red List Categories and Criteria. Version 3.1, which provides all the ... Read More

All assessments must follow the current versions of the IUCN Red List Categories and Criteria (available in English, Français, Español) and the Guidelines for ... Read More

The Guidelines for Using the IUCN Red List Categories and Criteria are regularly updated: the current version is version 14 (August 2019). Please check that you ... Read More

The 1994 IUCN Categories and Criteria were developed to improve objectivity and transparency in assessing the conservation status of species, and therefore to ... Read More

Categories — Species are classified by the IUCN Red List into nine groups, specified through criteria such as rate of decline, population size, area of ... Read More

IUCN Red List of Threatened Species, objective assessment system for classifying the status of plants, animals, and other organisms threatened with extinction. Read More

The IUCN Red List Categories and Criteria provide an easily and widely understood system for classifying species at high risk of global extinction, so as to focus ... Read More