International Day for Biological Diversity

The possible demise of the polar bear is tied directly to the effects of global warming. Sea ice is the key habitat for the polar bear providing dens, hunting grounds, and means of travel. Global warming has an increased effect in the arctic, with water temperatures increasing faster than other areas of the globe. The polar bear is classified as “vulnerable” on the IUCN Red List. Species Categorized as Vulnerable (VU) . The Red List Index (RLI) is one way of representing information on the status of biodiversity from The IUCN Red List . Complementary measures include the proportion of species that are threatened with extinction (as illustrated, for example, in Díaz et al. 2019 ), and the proportion of species that have declining trends. More broadly, the trends in extinction risk shown by the RLI capture just one aspect of biodiversity loss. Complementary indicators produced from other datasets show trends in population abundance and community intactness.

Bolivian chinchilla rats are listed as Vulnerable (VU) on the IUCN red list of threatened species. Data on populations and ecological requirements are extremely limited and they are also designated "data deficient." A taxon is Vulnerable (VU) when the best available evidence indicates that it meets any of the criteria A to E for Vulnerable, and it is therefore considered to be facing a high risk of extinction in the wild. Species Categorized as Vunerable (VU) .