Phytoperiphyton of the mineral spring (Republic of Tyva, Russia)
YU. V. NAUMENKO1, Ch. D. NAZYN2
1Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
2Center for Biosphere Research, Kyzyl, Russia
Keywords: mineral spring, arzhaan, algae, hydrochemical composition, taxonomic composition, Bacillariophyta, Republic of Tuva
Abstract
This is the first report on the algae and hydrochemical composition of the Kholchuktug mineral spring, located in the Sut-Kholsky District of the Tuva Republic. According to the classification of therapeutic mineral waters based on temperature, it belongs to the cold group, and according to the degree of mineralization, it belongs to the low-mineralization group. The identified species composition of algae is represented by 72 species belonging to 35 genera and 21 families from 4 divisions: Cyanoprokaryota - 5, Bacillariophyta - 53, Chlorophyta - 2, Charophyta - 11. Seven dominants were identified, of which Meridion circulare, Diatoma mesodon, Ulnaria ulna stand out. The species composition is dominated by diatoms. An ecological and geographical analysis was conducted, according to which the source is dominated by benthic species with a predominance of indifferent forms in relation to halobity and active environmental response. 56 species were identified in the studied water flow as indicators of water saprobity. The predominance of xenobionts, oligobionts, and betamesosaprobionts was noted. Geographically, cosmopolitan and boreal species were dominant.
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