refugium


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refugium

[rə′fyü·jē·əm]
(ecology)
An area which has escaped the great changes which occurred in the region as a whole, often providing conditions in which relic colonies can survive; for example, a driftless area which has escaped the effects of glaciation because it projected above the ice.
References in periodicals archive ?
2013: Mitochondrial evidence uncovers a refugium for the fat dormouse (Glis glis Linnaeus, 1766) in Hyrcanian forests of northern Iran.
Anatolia is suggested as a glacial refugium, playing an important role in the establishment of fauna of nonrefugial northern areas during the Holocene (Taberlet et al.
Such differentiation would require isolation from other subspecies, arguing that the features characterizing the Haida Gwaii black bear developed in a glacial refugium on or near this archipelago.
1) The number of snails in the experimental chambers was impacted by the presence of a refugium but not so in the controls.
These snakes returned in the morning to bask secluded in a refugium that was warmer than ambient air temperature (Peterson et al.
These discoveries lend weight to the refugium, or refuge, theory, which holds that cave populations are the descendants of long-ago species that retreated underground in order to survive and then adapted to a different environment.
The best-known and best-supported refugium in the north is Beringia, which extended from eastern Siberia across the Bering and Chukchi Seas to Alaska and the Yukon.
The area around Lake Valencia has been postulated to be a Pleistocene refugium based on anoline lizards (Vanzolini and Williams 1970), plants (Prance 1973), and butterflies (Brown et al.
Therefore, during the Last Glacial Maximum, we recognize a single large refugium for this species, located in southern Europe (including France), Anatolia, and the Caucasus/Caspian region.
A partnership effort with the Service's Nevada Fish and Wildlife Office, Nevada Department of Wildlife, and private landowners created a refugium for the endangered White River spinedace (Lepidomeda albivallis).
The Pleistocene refugium hypothesis (Haffer 1969; see Discussion) has been offered as a mechanism to explain the vicariant partitioning of ancestrally homogeneous Heliconius phenotypes, although selection in usually invoked to explain the rapid diversification of wing patterns once isolation is achieved (Brown et al.
For example, morphologically and genetically divergent freshwater populations of sticklebacks in the Queen Charlotte Islands have been suggested to have diverged in isolation in a Pleistocene refugium (O'Reilly et al.