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A bioregion is an ecologically and geographically defined area that is smaller than an ecozone, but larger than an ecoregion or an ecosystem.

It may be conceptually similar to an ecoprovince.[1]

It is also differently used in the environmentalist context, being coined by Berg and Dasmann (1977).[2][3]

WWF bioregions[edit]

Main article: Global 200

The WWF scheme further subdivides the ecozones into bioregions, defined as "geographic clusters of ecoregions that may span several habitat types, but have strong biogeographic affinities, particularly at taxonomic levels higher than the species level (genus, family)." The WWF bioregions are as follows:[citation needed]

See also[edit]


  1. ^
  2. ^ Berg, P. and Dasmann, R. (1977). Reinhabiting California. The Ecologist 7 (10): 399-401.
  3. ^ Miller, K. 1999. What is bioregional planning?. In: R. Crofts, E. Maltby, R. Smith and L. Maclean (eds). Integrated Planning: International Perspectives. Battleby, Scotland 7-9 April 1999: IUCN & Scottish Natural Heritage.
  4. ^ Dinerstein, E., Olson, D. Graham, D.J. et al. (1995). A Conservation Assessment of the Terrestrial Ecoregions of Latin America and the Caribbean. World Bank, Washington DC., [1].