Phytoplankton and water quality of Lake Kuchane (Pskov region, Russia)
https://doi.org/10.35885/1684-7318-2021-3-251-261
Abstract
The phytoplankton communities of Lake Kuchane, located in the Mikhailovskoye Museum-Reserve, were studied during different 2016–2017 seasons for the first time. 213 specific and intraspecific taxa from 9 phylums were identified in the phytoplankton, namely: Bacillariophyta, Chlorophyta, Chrysophyta, Euglenophyta, Cyanobacteria, Dinophyta, Cryptophyta, Charophyta, and Xanthophyta. The ratio of the main phylums of microalgae during the studied seasons was similar. The floristic complex of the lake's algoflora consisted of diatoms (36.6%), green (27.2%) and golden (10.8%) algae. Most of the phytoplankton genera contained one species taxon only. The specific composition of the phytoplankton community in 2017 was similar from spring to autumn. The minimum specific similarity of the phytoplankton communities was noted in July, 2016, and August, 2017. According to the level of biomass of planktonic algae, the lake belongs to oligotrophic water bodies. The planktonic algoflora of Lake Kuchane is characterized by the predominance of cosmopolitan freshwater forms of microalgae. In relation to pH, the predominant representatives preferred slightly alkaline waters. The Milius trophic index varied in the range 18.0–39.6 with a maximum value in summer. The Pantle–Bukk saprobity index almost did not change during the entire study. The waters of Lake Kuchane corresponded to the betamesosaprobic self-purification zone, quality class III.
Keywords
phytoplankton, bioindication,
taxonomic composition,
biomass,
trophic status,
saprobity,
water quality
Supporting agencies: The reported study was funded by Russian Science Foundation (project number 20-64-46018).
About the Authors
T. V. Drozdenko
Pskov State University
Russian Federation
Russian Federation
Tatiana V. Drozdenko
2 Lenin Square, Pskov 180000
A. A. Volgusheva
Lomonosov Moscow State University
Russian Federation
Russian Federation
Alena A. Volgusheva
bldg. 1/12, Vorobyovi Gory, Moscow 119991
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Review
For citations:
Drozdenko T.V., Volgusheva A.A. Phytoplankton and water quality of Lake Kuchane (Pskov region, Russia). Povolzhskiy Journal of Ecology. 2021;(3):251-261. (In Russ.) https://doi.org/10.35885/1684-7318-2021-3-251-261
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