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 ?
The Columbia River Valley has recently been proposed as a Pleistocene refugium for terrestrial organisms (Steele and Storfer 2006), and this may be the case for P.
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.
Paleoclimatic speculations suggested by new data on the location of the spruce refugium in Alaska during the last glaciation.
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.
Key words: Hyrcanian refugium, Iran, Middle East, molecular taxonomy, phylogeography, Zagros Mts.
Temperatures of one snake in a refugium during February was 5.4[degrees]C (Cunningham, 1966), while recorded body temperatures for three snakes collected in May were 30.2, 31.2, and 27.0[degrees]C (Brattstrom, 1965).
Only one documented instance of a potential plant refugium maintained by animals is known: that of the termite created soils around Mulga (Acacia aneura) logs (Tongway et at, 1989).
After more than 30 years of carefully monitoring the wild population, biologists are scrambling to establish a refugium for this small fish.
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.