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faunal region

faunal region A region of the earth with a distinct and characteristic assemblage of animal taxa. There are six commonly recognized faunal regions used in zoogeography: the Ethiopian region, consisting of Africa south of the Sahara and part of southern Arabia; the Oriental region, which covers tropical Asia and associated continental islands; the Palaearctic region, comprising Europe and Asia north of the tropics; the Nearctic region, consisting of North America except for tropical Mexico; the Neotropical region, consisting of South and Central America including tropical Mexico; and the Australian region, covering principally Australia and New Guinea. The regions are described mainly in terms of their terrestrial and freshwater vertebrate fauna, especially mammals and birds, although the invertebrate fauna may sometimes be included. The concept was originated by 19th century naturalists, such as P. L. Sclater and A. R. Wallace, and held as evidence of continental drift (see Wallace's line). However, another important factor in determining the nature of a region's fauna is the historical migration of species from their centres of origin, a process influenced by the presence of physical barriers, such as mountains. Climate, and hence latitude, is also an important factor.

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faunal region

faunal region (faunal province, faunal realm, faunal zoogeographic kingdom) A biological division of the Earth's surface (i.e. a large geographical area) that contains a fauna more or less peculiar to it. The degree of distinctiveness varies with the region concerned and reflects partly climate and partly the existence of barriers to migration. The number of regions recognized varies from one authority to another, but a minimum of six are recognized: Australian, Ethiopian, Nearctic, Neotropical, Oriental, and Palaearctic. In defining a region, greatest emphasis is given to mammals.

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"faunal region." A Dictionary of Zoology. . Encyclopedia.com. 21 Apr. 2018 <http://www.encyclopedia.com>.

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faunal region

faunal region(faunal province, faunal realm, faunal zoogeographic kingdom) A biological division of the Earth's surface (i.e. a large geographical area) that contains a fauna more or less peculiar to it. The degree of distinctiveness varies with the region concerned and reflects partly climate and partly the existence of barriers to migration. The number of regions recognized varies from one authority to another, but a minimum of six are recognized: Australian, Ethiopian, Nearctic, Neotropical, Oriental, and Palaearctic. In defining a region, greatest emphasis is given to mammals.

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"faunal region." A Dictionary of Ecology. . Encyclopedia.com. 21 Apr. 2018 <http://www.encyclopedia.com>.

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