EXPANSION OF THE ARCTOGEIC ELEMENT OF FLORA INTO THE BOREAL REGION (ON THE EXAMPLE OF OKHOTIA)

S.D. Shlotgauer

Аннотация


On the example of arctic and arctoalpine species of the sedge family (Cyperaceae Juss.), willow family (Salicaea Mirb.), saxifrage family (Saxifragaceae Juss.), buttercup family (Ranunculaceae Juss.) and rose family (Rosaceae Juss.) new points of their settlement in the subarctic mountain structures of Priokhotye are shown. The ecological adaptations of arctogenicelement species to existence in mountainous conditions of low temperatures and high water content of habitats (nival lawns, the outskirts of ice crust fields, key bogs, etc.) are considered. This made it possible to clarify the main ways of arctic and arctic-alpine species dispersal in the subarctic mountain systems of the Boreal region.


Ключевые слова


Okhotya; arctic; arctoalpine species; Dzhugdzhur; Geran; Pleistocene; mountain-valley glaciations; migrations.

Литература


Skvortsov A.K. Genus Salix L., in Arkticheskaya flora SSSR (Arctic flora of the USSR). Leningrad, 1966, no. 4, pp.57–62. (In Russ.).

Yurtsev B.A. Problemy botanicheskoi geografii Severo-Vostochnoi Azii (Problems of botanical geography of North-East Asia). Leningrad: Nauka Publ., 1974. 159 p. (In Russ.).

Yurtsev B.A. Novosieversia glacialis (Adams.) F.Boble, in Arkticheskaya flora SSSR (Arctic flora of the USSR). Leningrad, 1984, no. 9 (1), pp. 250–286. (In Russ.).

Hulten E. The distributional conditions of the flora of Beringia, in Pacific basin biogeography. Honolulu: Bishop Museum Press, 1963, pp. 7–22.

Hulten E. Flora of Alaska and neighboring territories. Stanford: Stanford University Press, 1968. 522 p.


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