The Norwegian Red List for Species is the list of species that have a risk of going extinct in Norway. It is prepared by the Norwegian Biodiversity Information Centre in accordance with criteria from the International Union for Conservation of Nature (IUCN).
Species are generally included on the Red List because they are rare, or because the number of individuals is in strong decline. Habitat fragmentation and loss also contribute to increasing a species’ risk of extinction.
The Norwegian Red List is revised regularly, most recently in 2010. The assessments are made by more than one hundred experts commissioned by the NBIC.
The species in the Red List are assigned to one of six categories, ranked by their risk of extinction. The categories are:
All species on the Red List are called red-listed species. Species that are classified as Critically Endangered (CR), Endangered (EN) or Vulnerable (VU) are called threatened species. These species have a high to extremely high risk of extinction in Norway.
Species that are at risk of extinction, but for which there is considerable uncertainty about the degree of risk, are classified as Data Deficient (DD).
Species that have viable populations are not considered to be red-listed species, but are categorised as Least Concern (LC).
The 2010 Norwegian Red List for Species contains 4599 species, of which 2398 are classified as threatened. Of these threatened species, 276 are categorized as Critically Endangered (CR), 872 are Endangered (EN), and 1250 are Vulnerable (VU).