Abstract
This electron microscopy study of materials from streams on the western slope of the Kharaulakh Range has revealed 59 taxa of diatom algae from 32 genera that makes it possible to broaden the composition of Bacillariophyta at the species level (from 5 to 64), as well as at the genus level (from 5 to 37). A total of 35 species and varieties of diatoms that are new for the Lena River mouth have been detected. Five forms from the genera Diploneis, Gomphonema, Naviculadicta, and Nitzschia have been identified only to the genus level. Among the algae found in this study, Diatoma problematica has been recorded for the first time for the flora of Russia and 17 species and varieties from the genera Achnanthidium, Cymbella, Diatoma, Diatomella, Encyonema, Eucocconeis, Gomphonema, Nitzschia, Pinnularia, Psammothidium, and Rexlowea have been recorded for the first time for the flora of Yakutia. Most species new for the Republic of Sakha (Yakutia) are rare freshwater algae that prefer oligotrophic waters.
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ACKNOWLEDGMENTS
We are grateful to E.V. Likhoshvay for allowing us to use the facilities of the Electron Microscopy Center of Collective Use, Limnological Institute, Siberian Branch, Russian Academy of Sciences; V.I. Egorov (Ultramicroanalysis Center of Collective Use, Limnological Institute, Siberian Branch, Russian Academy of Sciences), and V.B. Timofeev (Graphene Nanotechnology Educational, Scientific and Technological Laboratory, North-Eastern Federal University) for the help with SEM.
Funding
The study was performed as part of State Task of the Ministry of Science and Higher Education of the Russian Federation on the project “Vegetation cover of the cryolithozone of Taiga Yakutia: biodiversity, environmental functions, protection and rational use,” topic no. 0297-2021-0023 and EGISU R&D no. AAAA21-121012190038-0. and Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences “Systematics, Diversity and Phylogeny of Aquatic Autotrophic Organisms in Russia and other Regions of the World,” project no. АААА-А18-118012690095-4.
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Genkal, S.I., Gabyshev, V.A. Broadening the Taxonomic Composition of Diatoms (Bacillariophyta) in the Flora of the Lena River (Streams of the Western Slope of the Kharaulakh Range, Yakutia). Inland Water Biol 14, 349–356 (2021). https://doi.org/10.1134/S1995082921040064
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DOI: https://doi.org/10.1134/S1995082921040064