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evolutionarily significant unit
(redirected from Evolutionary significant unit)

   Also found in: Acronyms, Wikipedia 0.01 sec.
evolutionarily significant unit [‚ev·ə‚lü·shə¦ner·ə·lē sig¦nif·i·kənt ′yü·nət]
(ecology)
A distinct local population within a species that has very different behavioral and phenological traits and thus harbors enough genetic uniqueness to warrant its own management and conservation agenda. Abbreviated ESU.


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Dimmick, Critique of the Evolutionary Significant Unit as a Definition for "Distinct Population Segments" Under the US Endangered Species Act, 11 CONSERVATION BIOLOGY 611, 617 (1997) (claiming that the new definition of "evolutionary significant units" is less protective than the older concept of "distinct population segments"); Walter W.
250) could leave the impression that the evolutionary significant unit (ESU) is the de facto concept employed for all listing decisions under the Endangered Species Act.
An evolutionary significant unit, or ESU, represents the basic building block of conservation.
 
 
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