Nearctic realm

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Definition

noun

A biogeographic realm that covers most of North America, including Greenland, Central Florida, and the highlands of Mexico


Supplement

Biogeographic realms are large spatial regions of the Earth's land surface. Studying biogeographic realms leads to insight especially on biodiversity. It provides understanding on the extent of biodiversity and the factors that affect it. 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. The eight biogeographic realms are Nearctic realm, Palaearctic realm, Neotropical realm, Afrotropic realm, Indomalayan realm, Australasia realm, Oceanian realm, and Antarctic realm.

The Nearctic realm (about 22.9 million square kilometres) includes most of North America, particularly Greenland, Central Florida, and the highlands of Mexico. It is comprised of four bioregions:1


See also:


Reference(s):
1 Nearctic realm. Retrieved from [[1]].

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