Bryophytes (Bryophyta, Marchantiophyta) of thermal habitats of the Lagoon Tintikun, Northern Koryakia, Kamchatka Territory

Mosses and liverworts of Govenskie thermal springs in the Lagoon Tintikun are studied for the first time. Govenskie thermal springs are northernmost in the Kamchatka Territory. We found 56 species of bryophytes, including 11 species of liverworts and 45 of mosses. Of these, 3 species are new for the Kamchatka Territory, 11 species are new for the Koryak Area of Kamchatka Territory and 16 species are new for the Olyutorskiy District. A distinctive feature of the partial flora of Govenskie springs is a significant part of the boreal and boreal-nemoral species (28% of the species list) that reflects the specific thermal habitat. Comparison of the latitudinal bryophyte species composition in gradient from Chukotka to Kamchatka shows a close taxonomic composition of bryophyte partial floras of Govenskie, Uzon (East Kamchatka) and Chukotka thermal springs. It can be assumed that a partial floras of Govenskie thermal springs represent a transition from the northern to the southern floras. The reason of distinctions of compared partial floras are discussed.