The iucn red list criteria are a globally accepted method of assessing species extinction risk, and countries around the world are adapting these criteria for domestic use. Combine or merge files into a single pdf, adobe acrobat dc. Follow these steps to use adobe acrobat to combine or merge word, excel, powerpoint, audio, or video files, web pages, or existing pdfs. English, french and spanish from the iucn publications services unit see address on inside front cover. The iucn red list categories and criteria were first published in 1994 following six years of research and broad consultation iucn 1994.
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. International union for conservation of nature treats threatened species not as a single category, but as a group of three categories. Pdf establishing iucn red list criteria for threatened. Establishing iucn red list criteria for threatened ecosystems article pdf available in conservation biology 251. Threatened species are any species which are vulnerable to extinction in the near future. All of the above documents are freely available to download from the iucn red list. Not evaluated, data deficient, least concern, near threatened, vulnerable, endangered, critically endangered, extinct in the wild and extinct. Pdf using iucn criteria to perform rapid assessments of. Iucn ssc cetacean specialist group 2001 iucn red list categories and criteria version 3. Criteria, the guidelines for application of iucn red list criteria at regional and national levels.