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词汇 vicariance
释义

Definition of vicariance in English:

vicariance

nounvɪˈkɛːrɪənsvʌɪˈkɛːrɪənsvīˈke(ə)rēəns
mass nounBiology
  • 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.

    〔生〕(因地理分隔形成的)分替,替代,离散

    Example sentencesExamples
    • And third, differentiation may have evolved in allopatry as a contiguous ancestral population became fragmented by vicariance.
    • The biogeographic patterns of vicariance and range expansion may also provide insight to the mechanics of this extinction event.
    • If allopatric taxa are older than the barrier that separates them, vicariance is the most parsimonious explanation for their divergence; if the barrier is older, dispersal is most parsimonious.
    • 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.

Definition of vicariance in US English:

vicariance

nounvīˈke(ə)rēəns
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.

    〔生〕(因地理分隔形成的)分替,替代,离散

    Example sentencesExamples
    • If allopatric taxa are older than the barrier that separates them, vicariance is the most parsimonious explanation for their divergence; if the barrier is older, dispersal is most parsimonious.
    • 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.
    • 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.
    • And third, differentiation may have evolved in allopatry as a contiguous ancestral population became fragmented by vicariance.

Origin

1950s: from Latin vicarius ‘substitute’ + -ance.

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