vicariance

Mar. 16th, 2009 07:30 am
prettygoodword: text: words are sexy (Default)
[personal profile] prettygoodword
vicariance - n., the separation by geographic barrier of a subpopulation of a species, resulting in differentiation from the original population as a new variety or species.


As opposed to separation by dispersal and other forms of allopatric speciation. The process is called vicariant speciation. From vicarious, though in what sense something is substituting in the place of another I don't quite follow, from Latin vicārius substituting, which is the genative form of vic(is), interchange, alternation, as in the vice versa.

---L.

Date: 2009-03-16 04:31 pm (UTC)
From: [identity profile] packbat.livejournal.com
The subject line is different from the text...

Date: 2009-03-16 05:03 pm (UTC)
From: [identity profile] prettygoodword.livejournal.com
Yes, and there's a barrier between the two!

(And now that it's fixed, *facepalm*)

---L.

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