science-review.ru
Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454
ISSN 2500-3399
ПИ №ФС77-57454
THE GEOGRAPHICAL ANALYSIS OF BRYOFLORA OF TATARSTAN REPUBLIC
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Provides a geographical analysis of the species distribution of RT (Republic of Tatarstan) bryoflora. Areal and zonal-genetic approaches were used. Most species of bryoflora have circumpolar, bipolar or cosmopolitan area, that are typical for bryoflora of the Northern Hemisphere, as well as for the vascular flora of the territory. Species of limited areas basically are in the zone of coniferous-broad-leaved and broad-leaved forests and reflect the nature of the continental bryoflora. In contrast to the vascular plants, the number of species with the western type of distribution is comparable with the number of eastern species, which may indicate partial preservation of pre-glacial bryoflora. Tertiary relict species in RT bryoflora is Buxbaumia aphylla Hedw., endemic species are not present. The presence of species belonging to different geographical elements, show a diversity of habitats at the area in relation to its position on the boundary of the taiga, deciduous and steppe zones and due ecotone effect. Species of the arctic-boreal, arctic-boreal-mountain, boreal, gemiboreal and nemoral elements are dominated. 27% of the study bryoflora species were related to a multizone geographical element. The absence of significant mountain elevations in the study area is the cause of a minor participation in the flora mountain mosses. Despite the nature of the modern forest-steppe territory arid element in bryoflora is weak, that indicate bryoflora conservatism.