Bioregion
Ecology terminology / From Wikipedia, the free encyclopedia
A bioregion is an ecologically and geographically defined area that is smaller than a biogeographic realm, but larger than an ecoregion or an ecosystem, in the World Wide Fund for Nature classification scheme. There is also an attempt to use the term in a rank-less generalist sense, similar to the terms "biogeographic area" or "biogeographic unit".[1]
Ecology terminology
It may be conceptually similar to an ecoprovince.[2]
It is also differently used in the environmentalist context, being coined by Berg and Dasmann (1977).[3][4]