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Abstract: Vegetationwasdescribedinvariousspatialscalesintheareaof37.8km 2 includingdistinguishing vegetation units, vegetation mapping, recording phytosociological releves(53), and completing species lists of vascular plants (86), mosses (124) and lichens (40).Phytosociological releves were elaborated using ordination methods DCA and CCA. Thereleves formed clusters corresponding well to apriori assigned vegetation units. Slope andstoniness significantly influenced the vegetation pattern. Despite the high latitude (nearly 80 N), the vegetation is rather rich in species. Non−native species do not expand. The moss Bryum dichotomum is reported for the first time from Svalbard archipelago.Key words: Arctic, Svalbard, bryophytes, lichens, ordination analysis, vascular plants,vegetation mapping. Introduction Vegetation changes in the High Arctic have recently been discussed especiallyin relationship to climate change (Parmesan 2006; Alsos et al. 2007; Thuiller et al. 2008; etc.). For any quantitative evaluation of such changes we need a solid de−scription of vegetation patterns to which the changes could be related. There arenot many studies which exploit repeated analyses of earlier described patterns(Moreau

Variability of contemporary vegetation around Petuniabukta, central Spitsbergen