Diversity of cyanobacterium nostoc and its conservancy in Lithuania/Nostoc genties melsvabakteriu ivairove ir jos apsauga lietuvoje

The article discusses the diversity, distribution and ecology of Nostoc genus in Lithuania. Nine Nostoc species including N. caeruleum, N. carneum, N. commune, N. ellipsosporum, N. linckia, N. pruniforme, N. punctiforme, N. spongiaeforme and N. verrucosum are recorded the most widespread of which are N. commune and N. caeruleum species. Five species were found in NATURA 2000 territories. The widest diversity of species is recorded in aquatic habitats and only two species (N. commune and N. ellipsosporum) are terrestrial. Nostoc species grew in natural and artificial water bodies when water's pH is 6,0-8,7, temperature - 13,0-27,0 [degrees]C and conductivity - 150-390 [micro]S/cm. Keywords: Nostoc, Cyanobacteria, diversity, ecology, NATURA 2000. Straipsnyje aptariama Nostoc genties rusiu ivairove ir ekologija Lietuvoje. Aptiktos devynios sios genties rusys: N. caeruleum, N. carneum, N. commune, N. ellipsosporum, N. linckia, N. pruniforme, N. punctiforme, N. spongiaeforme ir N. verrucosum. Placiai paplitusios yra N. commune ir N. caeruleum rusys. Penkios rusys aptiktos NATURA 2000 buveinese. Didziausia rusiu ivairove nustatyta vandens telkiniuose ir tik dvi rusys (N. commune ir N. ellipsosporum)--sausumoje. Nostoc rusiu individai vystesi naturaliuose ir dirbtiniuose vandens telkiniuose, kuriu pH svyravo nuo 6,0 iki 8,7, temperatura -13,0-27,0 [degrees]C ir savitasis elektrinis laidis - 150-390 uS/cm. Reiksminiai zodziai: Nostoc, Cyanobacteria, ivairove, ekologija, NATURA 2000.