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      Integrating national Red Lists for prioritising conservation actions for European butterflies

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      Journal of Insect Conservation

      Springer Science and Business Media LLC

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          Limits to the use of threatened species lists

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            Butterfly diversity loss in Flanders (north Belgium): Europe's worst case scenario?

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              Using Red List Indices to measure progress towards the 2010 target and beyond.

              The World Conservation Union (IUCN) Red List is widely recognized as the most authoritative and objective system for classifying species by their risk of extinction. Red List Indices (RLIs) illustrate the relative rate at which a particular set of species change in overall threat status (i.e. projected relative extinction-risk), based on population and range size and trends as quantified by Red List categories. RLIs can be calculated for any representative set of species that has been fully assessed at least twice. They are based on the number of species in each Red List category, and the number changing categories between assessments as a result of genuine improvement or deterioration in status. RLIs show a fairly coarse level of resolution, but for fully assessed taxonomic groups they are highly representative, being based on information from a high proportion of species worldwide. The RLI for the world's birds shows that that their overall threat status has deteriorated steadily during the years 1988-2004 in all biogeographic realms and ecosystems. A preliminary RLI for amphibians for 1980-2004 shows similar rates of decline. RLIs are in development for other groups. In addition, a sampled index is being developed, based on a stratified sample of species from all major taxonomic groups, realms and ecosystems. This will provide extinction-risk trends that are more representative of all biodiversity.
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                Author and article information

                Journal
                Journal of Insect Conservation
                J Insect Conserv
                Springer Science and Business Media LLC
                1366-638X
                1572-9753
                January 22 2019
                Article
                10.1007/s10841-019-00127-z
                © 2019

                http://www.springer.com/tdm

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