10th Symposium on the Flora of Southeastern Serbia and ...

10 th <strong>Symposium</strong> on the Flora of Southeastern Serbia and Neighbouring regions,Vlasina 17 to 20 June 2010Flora and vegetation of Vlasina plateauRanđelović, V., Zlatković, B.Department of Biology and Ecology, Faculty of Sciences and Mathematics,University, of Nis, Serbiavladar@pmf.ni.ac.rsThe Vlasina plateau is situated in southeastern Serbia between Vardenik,Čemernik, Plana and Bukova Glava mountains. Flora of Vlasina plateau contains178 species of mosses, 5 species of horsetail, 14 fern species and 925 species ofspermatic plants. 178 species of moss species are divided into the following classes:Marchanthiopsida (30 species), Sphagnopsida (12 species) and Bryopsida (136species). The taxonomical analysis indicates that mosses are represented by 96genera and 56 families. The most numerous genus Sphagnum contains 12 species.Vascular plants are represented by 383 genera and 94 families. Families richest ingenera are: Asteraceae (53), Poaceae (38) and Apiaceae (23). Families with themost species are: Asteraceae (132 species), Poaceae (79) and Scrophulariaceae(57). The analysis of the particular genera occurrence in flora of Vlasina plateau hasshown an absolute domination of representatives of genus Carex (34 species) whileTrifolium (19 species) and Ranunculus (15) genus were of less importance.The flora of mosses contains 52 different floristic elements divided into 5 basicarea types. While more detail phytogeographical analysis reveals the dominance ofboreal (60) and holarctic species (75). The phytogeographyc analysis of flora ofVlasina plateau region reveals the presence of 310 different floristic elements,classified into 10 basic area types and 20 different area groups. The species ofEurasian area type (459 species, 48,6%) are the most abundant ones, followed byspecific high-mountain elements of the Eurasian mountain (123 species). Theanalysis shows that the floras of Vlasina consider 45 endemics and 30 subendemics.The illustration of life conditions (especially of climate occasions) keepsproportional representation of life plant forms in the flora of Vlasina plateau. Thehemicryptophytic character of Vlasina plateau flora, together with significantcontribution of therophytes and geophytes, is established by analyzing the presenceof vascular plants' life forms.Phytocoenological analysis shows 63 different associations from 35 alliances,24 orders and 19 classis. The next types of vegetation can be differentiated from theecological stand-point: aquatic and moor vegetation, vegetation of flooded places,wet grasslands, vegetation of springs, tall herbaceous vegetation, herbaceousvegetation of woodland clearings, peat-bogs vegetation, vegetation of meadows andpastures in mountain and subalpine zone, vegetation of dwarf-shrubs, forestvegetation, nytrophilous and ruderal vegetation.11