[vahy-kair-ee-uh ns, vi-]
the geographical separation and isolation of a subpopulation, resulting in the original population's differentiation as a new variety or species.
Also called vicariance biogeography.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
The separation or division of a group of organisms by a geographic barrier, such as a mountain or a body of water, resulting in differentiation of the original group into new varieties or species. See also speciation.
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