Refugium

Refugium ( lat. Refúgium - refuge) - a piece of the earth's surface or the oceans , where a species or group of species survived or are experiencing an unfavorable period of geological time during which these forms of life disappeared.

It is assumed that the species can not only survive in the refugium, but also subsequently re-spread from it to a wider space.

For example, Pleistocene refugiums are territories south of the border of the distribution of glaciers for that period. Transcaucasia is a glacial refugium of many plant species and related animals. Tract Doly - a refugium of the steppe flora in the Prioksko-Terrasny Reserve . Pigeon Cliff is a refugium of west-Pacific heat-moderate relict plant species in the south of the Russian Far East .