Figure 4.5
A preliminary Red List Index (RLI) for all amphibian species for 1980–2004 (retrospective assessment; 496 genuine status changes out of 2,225 species in categories Extinct in the Wild (EW) to Near Threatened (NT) in at least one assessment), with hypothetical indices showing trends if no species had changed category, and if 10% or 30% of species in the categories from NT to Critically Endangered (CR) had been uplisted to a higher category of threat or downlisted to a lower category of threat over the period.