A standard method for comparing ecosystems risk of collapse. Clear about how risk assessments can inform conservation, land use and investment priorities. Guidelines for Application of IUCN Red List Criteria at Regional and National Levels, Guidelines for Using the IUCN Red List Categories and Criteria, SSC Specialist Groups and Red List Authorities Directory, Rules of Procedure. This can be achieved by focusing efforts on: (a) updating and improving assessments and documentation for non-Least Concern and non-Data Deficient species; or. Our editors will review what you’ve submitted and determine whether to revise the article. Any unchecked assessments remaining in the submissions queue at "SIS lockdown" will be held in the queue to be processed for publication in the next available update. All of the guidance documents can be downloaded from the Resources and Publications section. As a result, interested parties, such as national governments and conservation organizations, may use the information provided in the IUCN Red List to prioritize their own species-protection efforts. Before beginning an assessment, ensure that the taxon being assessed follows the taxonomic standards used for the IUCN Red List. Each year thousands of scientists around the world assess or reassess species. Assessments for subspecies, subpopulations, and (for plants) varieties can also be accepted for The IUCN Red List, provided the species-level assessment has also been carried out. Scientists can analyze the percentage of species in a given category and how these percentages change over time; they can also analyze the threats and conservation measures that underpin the observed trends. Get exclusive access to content from our 1768 First Edition with your subscription. Whether the species already possesses a small population size, Whether the species is very small or lives in a restricted area, Extinct in the Wild (EW), a category containing those species whose members survive only in captivity or as artificially supported populations far outside their historical geographic range, Critically Endangered (CR), a category containing those species that possess an extremely high risk of extinction as a result of rapid population declines of 80 to more than 90 percent over the previous 10 years (or three generations), a current population size of fewer than 50 individuals, or other factors, Endangered (EN), a designation applied to species that possess a very high risk of extinction as a result of rapid population declines of 50 to more than 70 percent over the previous 10 years (or three generations), a current population size of fewer than 250 individuals, or other factors, Near Threatened (NT), a designation applied to species that are close to becoming threatened or may meet the criteria for threatened status in the near future, Least Concern (LC), a category containing species that are, Data Deficient (DD), a condition applied to species in which the amount of available data related to its risk of extinction is lacking in some way. Corrections? After a species is evaluated by the IUCN, it is placed into one of eight categories based on its current conservation status. Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species. Furthermore, information in the same source indicates that this percentage is lower than that for mammals, reptiles, fish,…, …individual species, such as the Red List of Threatened Species from the International Union for Conservation of Nature and Natural Resources (IUCN) and the United States Endangered Species list remain critical tools that help decision makers prioritize conservation efforts. IUCN Red List categories. In addition, a number of areas rich in unique species that…. https://www.britannica.com/topic/IUCN-Red-List-of-Threatened-Species, The Official Site of IUCN Red List of Threatened Species, International Union for Conservation of Nature. Likewise, another species undergoing a 50 percent decline over the same period would be classified as endangered, and one experiencing a 30 percent reduction over the same time frame would be considered vulnerable. Updates? Focus not only on threatened ecosystems but also on those that are in good condition as a result of active management, and so highlight best practices in ecosystem management. Non-IUCN led regional assessments and national Red List assessments will not be considered for inclusion on The IUCN Red List, unless these are also global assessments (e.g., single-country endemics). For more information about using the IUCN Categories and Criteria at regional levels, please see the Guidelines for Application of IUCN Red List Criteria at Regional and National Levels, the National Red List website, and the online Red List Training course. . Consistency in the application of the Red List Categories and Criteria. Publication Year: 1995. Consistent with and complementary to the IUCN Red List of Threatened Species™, which measures  extinction risk. By 2019, 96,500 species had been assessed by using the IUCN Red List categories and criteria. Since the state of conservation of ecosystems is constantly changing, the reality is that a red list represents the equivalent to a photograph of an ecosystem's risk of collapsing at the time of its assessment.