单词	vicariance
释义	vicariance /vɪˈkɛːrɪəns / /vʌɪˈkɛːrɪəns/ noun [mass noun] Biology The geographical separation of a population, typically by a physical barrier such as a mountain range or river, resulting in a pair of closely related species.The biogeographic patterns of vicariance and range expansion may also provide insight to the mechanics of this extinction event.... Phylogenetic biogeography resolved patterns of both vicariance and geodispersal and revealed that range expansions were more abundant than range contractions in Devonian phyllocarids. It also can be used to identify both episodes of vicariance and congruent range expansion (geo-dispersal) that allow biogeographic patterns to be considered in the context of tectonic and climatic change. Origin 1950s: from Latin vicarius 'substitute' + -ance.
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