Abstract
Communities with Dryas octopetala dominance are rather rare in the East European North. Some of these occupying zonal positions on watersheds within the typical tundra subzone are described in the tradition of the dominant approach at the Vangurey Upland in the northern part of Bolshezemelskaya tundra (Andreev, 1932), the highest moraine elevations in the northern parts of Malozemelskaya tundra (Dedov, 2006) and at the Kolguev Isl. (Bogdanovskaya-Gienef, 1938; Smirnova, 1938). Besides Dryas octopetala abundant species in these stands are willows Salix glauca, S. hastata, S. polaris, S. reticulata, sedge Carex arctisibirica and mesophyte forbs as well bryophytes Aulacomnium turgidum, Hylocomium splendens, Tomentypnum nitens and Ptilidium ciliare in ground layer. The diagnostic species of Loiseleurio-Vaccinietea Eggler ex Schubert 1960 Arctous alpina, Empetrum hermaphroditum and Vaccinium vitis-idaea are also common. Zonal communities of similar composition and structure, but dominating by Dryas punctata, were described on the Taymyr Peninsula as Carici arctisibiricae–Hylocomietum alaskani Matveyeva 1994 (Matveyeva, 1994) and on Wrangel Isl. as Carici lugentis–Hylocomietum alaskani (Sekretareva, 1998; Kholod, 2007) for which the new alliance Caricion lungentis all. prov., within the order Salicetalia polaris Hartmann 1980 has been suggested (Kholod, 2007). The revision of similar syntaxa in the East European North is in our plans.
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