Flora of diatoms (Bacillariophyta) in coastal biotopes of Nalychevo Lake (eastern Kamchatka)
- Authors: Genkal S.I.1, Lepskaya E.V.2, Chernyagina O.A.3
-
Affiliations:
- Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences
- Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography
- Kamchatka Branch of Pacific Geographical Institute, Far-Eastern Branch RAS
- Issue: Vol 110, No 7 (2025)
- Pages: 634-648
- Section: COMMUNICATIONS
- URL: https://bakhtiniada.ru/0006-8136/article/view/308722
- DOI: https://doi.org/10.31857/S0006813625070022
- EDN: https://elibrary.ru/hlongq
- ID: 308722
Cite item
Abstract
The study of materials from littoral biotopes of Nalychevo Lake (“Nalychevo” Natural Park, Eastern Kamchatka) using scanning electronic microscopy revealed 164 taxa of diatoms from 57 genera, including new ones to the flora of Russia: Cocconeis pseudothumensis, Cymbopleura acutiformis, Encyonema subminutum, Gomphonema cf. khienticense, and Witkowskia parvapolonica. 15 algae have been identified to the genus only, namely Achnanthidium, Amphora, Caloneis, Cocconeis, Encyonema, Fragilaria, Gomphonema, Navicula, Pinnularia, Placoneis, Planothidium, Sellaphora. The obtained data have significantly expanded taxonomic spectrum of Bacillariophyta in the lake: from 35 to 189 species and varieties, and from 18 to 58 genera. The most taxonomically diverse are the genera Achnanthidium (8 taxa), Navicula (13) and Gomphonema (16). Ecological analysis of the flora of Bacillariophyta from biotopes with agglomerations of Aegagropila colonies of various ages has shown that the vast majority of discovered algae prefer fresh, subalkaline water bodies. According to saprobity index, the surveyed littoral areas of the lake are classified as oligosaprobic with elements of mesosaprobity.
About the authors
S. I. Genkal
Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences
Author for correspondence.
Email: genkal47@mail.ru
Borok, Yaroslavl Region, 152742, Russia
E. V. Lepskaya
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography
Email: lepskaya@list.ru
Naberezhnaya Str., 18, Petropavlovsk-Kamchatsky, 683000, Russia
O. A. Chernyagina
Kamchatka Branch of Pacific Geographical Institute, Far-Eastern Branch RAS
Email: kamchatika@mail.ru
Partizansknaya Str., 6, Petropavlovsk-Kamchatsky, 683001, Russia
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