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The Red List Index (RLI) shows how the overall extinction risk for species groups changes over time, based on repeated assessments by IUCN and its Partners. The RLI can be disaggregated by theme, region, country, or taxon, and is used to monitor progress towards biodiversity targets and goals.
The Red List Index shows trends in overall extinction risk for groups of species. It is an index between 0 and 1, where 1 means no extinction risk and 0 means all species are extinct.
The IUCN Red List is the world's most comprehensive information source on the extinction risk of animal, fungi and plant species. It divides species into nine categories based on their population size, habitat, threats and conservation actions.
The Red List Index (RLI), based on the IUCN Red List of Threatened Species, is an indicator of the changing state of global biodiversity. It defines the conservation status of major species groups, and measures trends in extinction risk over time.
The Red List Index shows trends in overall extinction risk for species. Governments use the Index to track their progress towards targets for reducing biodiversity loss. Learn more about the Red List Index and other features of the IUCN Red List website.
Data for species that are genuinely changing status are used to calculate the Red List Index (RLI). Table 7 shows the list of species that have changed category, along with the reasons for these changes.
4 mai 2022 · What is a Red List Index? The Red List Index (RLI) shows changes in the overall extinction risk of sets of species over time, and relates to the rate at which species move through IUCN Red List categories towards or away from extinction.
