vicariance
Separation or division of a population by a geographic barrier, such as a mountain or body of water, resulting in evolution into new varieties or species.
Results for “vicariance”
Ichthyological terms, not general ones.
vicariant
Used in reference to any of several closely related species, variants, etc., each of which exists in a distinct geographical area but are assumed to have originated from a single population that became dispersed by geological events; of or relating to such an event.