vicariance
noun
vi·car·i·ance
vī-ˈker-ē-ən(t)s 
və-
: fragmentation of the environment (as by splitting of a tectonic plate) in contrast to dispersal as a factor in promoting biological evolution by division of large populations into isolated subpopulations
called also vicariance biogeography
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“Vicariance.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vicariance. Accessed 22 Nov. 2024.
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