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Biogeographic realm

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Definition

noun, plural: biological realms

Any of the large spatial regions of the Earth's land surface with ecosystems sharing similar biological evolutionary history and distributional patterns of terrestrial organisms


Supplement

Biogeographic realms are large spatial regions of the Earth's land surface. Based on the original proposal of Philip Sclater and Alfred Wallace, the Earth's land surface is divided into six biogeographic regions: Nearctic region, Palaearctic region, Neotropical region, Ethiopian region, Oriental region, and Australian region. At present, there are about eight realms recognized by the World Wildlife Fund and they are divided according to their ecosystems sharing similar biological evolutionary history and distributional patterns of terrestrial organisms. These eight realms are as follows:


Variant(s):

  • biogeographical realm

Synonym(s):

See also: