A species that has been observed in the form of a naturally occurring and self-sustaining population in historical times.
Bern Convention 1979 1
A species or lower taxon living within its natural range (past or present) including the area which it can reach and occupy using its natural dispersal systems.
International Council for Exploration of the Sea (ICES) 1994 2 modified after the Convention on Biological Diversity (CBD).
References & Websites
- European Union (1979) Convention on the conservation of European wildlife and natural habitats (Bern Convention). 19.IX.1979. The Council of Europe, Bern, Germany.
- ICES (1994) ICES Code of Practice on the Introduction and Transfers of Marine Organisms. International Council for the Exploration of the Sea, Copenhagen, Denmark.