Species composition of algae of reservoirs of Endybal river basin (Central Verkhoyansk range, Yakutia)
https://doi.org/10.31242/2618-9712-2018-25-3-98-104
Abstract
The species composition and structure of algae of reservoirs of the Endybal river basin are studied. The research results revealed 81 taxa of algae from 5 divisions. In the studied reservoirs, 5 species new to the reservoirs of Yakutia were found: Bicoeca borealis Hill., Epipyxis deformans Aver., Pinnularia divergens var. elliptica (Grun.) Cl., Eunotia robusta var. tetraedon (Ehr.), Pediastrum brauni Wartmann, Cosmoastrum fristichum (Elfv.) Pal.-Mordv. The species of the Chrysophyta – Hydrurus foetidus; Cyanophyta – Oscillatoria geminata, Stigonema mamillosum, St. ocellatum and Siphononema polonicum; Xanthophyta – Tribonema viridis; Chlorophyta – Ulothrix zonata and Bacillariophyta – Tabellaria flocculosa, Hannaea arcus, Meridion circulare, Achnanthes lanceolata, Cyclotella bodanica, Cymbella cistula, Gomphonema angustatum, Hantzschia amphioxys, etc. dominate in the numbers and biomass. In eco-geographical characteristics, there were present in all the studied water bodies freshwater, benthonic-planktonic, rheophylic and widespread species developing mainly in the interior, phytoperiphyton and benthos of cold flowing water and springs. Among them, the typical cryophilic species of the water column Cyclotella bodanica, Hannaea arcus, Meridion circulare, Hydrurus foetidus take the leading position in the phytoplankton. Along with the freshwater species, there were identified the freshwater-brackish and brackish-water species of the genera Cymbella and Epithemia. The Pantle-Buck saprobity index (S) at different sites was 1,0–1,45. The water in the reservoirs can be attributed to the II class of purity
Supporting agencies: The work was performed within the framework of the IBPC SB RAS state task for 2017–2020 on the topic «Fundamental and applied aspects of study of diversity of plant world of Northern and Central Yakutia»; registration number: АААА-А17-11702011005656
About the Author
Любовь Копырина
Институт биологических проблем криолитозоны СО РАН
Russian Federation
Russian Federation
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Review
For citations:
Species composition of algae of reservoirs of Endybal river basin (Central Verkhoyansk range, Yakutia). Arctic and Subarctic Natural Resources. 2018;23(3):101-107. (In Russ.) https://doi.org/10.31242/2618-9712-2018-25-3-98-104
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