IUCN / SSC Cat Specialist Group - Digital Cat Library |
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| Dunn, E. | |
| IUCN Red List Criteria | |
| 2003 Conservation Biology (17): 1201-1202 | |
Since their introduction after a long phase of development (World Conservation Union 1994), the red list criteria have been improved and revised as a result of a continuing process of drafting, consultation, and validation, and lessons have been learned in using the criteria to identify over 18,000 animal and 34,000 plant species threatened with extinction ( Walter & Gillet 1998; Hilton-Taylor 2000 ). Dunn correctly points out a particular example of a more general point: to adequately assess a species' extinction risk requires a detailed review of its population, trend, range, and ecology, and the data used for this should be assessed critically, with explicit consideration of sources of uncertainty ( Ak‡akaya et al. 2000 ). The IUCN Red List categories and criteria provide the most useful objective framework for doing this at a global scale for a very broad range of taxa. |
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