IUCN Red List of Threatened Species: References & Edit History
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Article Contributors
Primary Contributors
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Holly Dublin
Chair, Species Survival Commission, International Union for the Conservation of Nature (IUCN).
Other Encyclopedia Britannica Contributors
Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Modified link of Web site: The Royal Society Publishing - Proceedings B - Three decades of classifying threatened species: lessons learned from and about the IUCN Red List criteria for quantifying extinction risk. | Jul 03, 2026 | ||
| Add new Web site: The Royal Society Publishing - Proceedings B - Three decades of classifying threatened species: lessons learned from and about the IUCN Red List criteria for quantifying extinction risk. | Oct 10, 2025 | ||
| Add new Web site: CORE - A framework for evaluating the impact of the IUCN Red List of threatened species (PDF). | Aug 30, 2025 | ||
| Add new Web site: Botanic Gardens Conservation Intrenational - Plant Species Going Into The Red On The IUCN Red List. | Jan 31, 2025 | ||
| Add new Web site: Nature - Nature Ecology and Evolution - Identifying species likely threatened by international trade on the IUCN Red List can inform CITES trade measures. | Aug 13, 2024 | ||
| Article revised and updated. | May 10, 2024 | ||
| Add new Web site: National Center for Biotechnology Information - PubMed Central - A framework for evaluating the impact of the IUCN Red List of threatened species. | Feb 21, 2024 | ||
| Revised to update information on the number of species assessed and the number of species on the threatened list in 2022 | Nov 13, 2023 | ||
| Added a cross-reference to critically endangered species. | Mar 15, 2023 | ||
| Changed "1.6 million species" to "1.9 million species." Changed "By 2009, 47,677 species" to "By 2019, 96,500 species." Changed "Of these, 17,291 species" to "Of these, more than 26,500 species." | Mar 13, 2019 | ||
| Add new Web site: The Official Site of IUCN Red List of Threatened Species. | Dec 29, 2010 | ||
| Text describing the number of species assessed by the IUCN and the number of species falling into the threatened categories updated for 2009. | Nov 03, 2009 | ||
| New article added. | Jun 15, 2009 |
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