allopatrically

/ˌæləˈpætrɪkli/
adverb
  1. In a way that involves or results from geographic separation of populations.
    • The birds became allopatrically isolated after the island split into two landmasses.
    • These fish populations developed allopatrically in different lakes with no connection.
    • The two frog species evolved allopatrically when a mountain range divided their habitat.
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