Dynamics of aquatic vegetation distribution in acidotrophic lakes of Belarus
Abstract
We analyzed the dynamics of overgrowth and the species composition of macrophytes in eight acidotrophic Belarusian lakes. The relevance of the study lies in the fact that acidotrophic lakes, which are places where protected plant species grow, are most sensitive to changes in the environment and anthropogenic load. Therefore, their study allows us to identify changes occurring in watersheds and take measures aimed at protecting lake ecosystems.
The most pronounced changes in the nature of overgrowth are observed in lakes Svityaz and Beloe (Luninets district), which experience high recreational pressure, as well as Bolshoe Ostrovito. For 30 years in Lake Svityaz, the depth of distribution of submerged macrophytes decreased from 7 to 2 m, and the abundance and projective cover of semisubmerged macrophytes increased. In Lake Beloe Isoëtes lacustris L. disappeared almost completely. 20 years ago, it formed a solid layer of submerged plants. Previously absent strip of aerial-aquatic plants formed. The total area of overgrowth of the lake decreased from 35.0 % of lake area to 3.2 %. In Lake Bolshoe Ostrovito water moss has almost disappeared. Previously it distributed at depths of 3–5 m.
In other studied lakes, the change in the area of overgrowth is less pronounced. The main reasons for the degradation of macrophytes are an increase in anthropogenic load and changes in the hydrological regime.
Supporting agencies: The research is funding by Belarusian republican foundation for basic research (project X22M-069).
About the Authors
N. Yu. Sukhovilo
Belarusian State University
Belarus
Belarus
Nina Yu. Sukhovilo – Ph. D. (Geography), Head of the Lab. of lake research
Nezavisimosti av., 4, 220030, Minsk
D. B. Vlasova
Belarusian State University
Belarus
Belarus
Daria B. Vlasova – Junior Researcher
Nezavisimosti av., 4, 220030, Minsk
A. A. Novik
Belarusian State University
Belarus
Belarus
Aliaksei A. Novik – Ph. D. (Geography), Associate Professor
Nezavisimosti av., 4, 220030, Minsk
B. P. Vlasov
Belarusian State University
Belarus
Belarus
Boris P. Vlasov – D. Sc. (Geography), Professor, Chief
Researcher
Nezavisimosti av., 4, 220030, Minsk
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Review
For citations:
Sukhovilo N.Yu., Vlasova D.B., Novik A.A., Vlasov B.P. Dynamics of aquatic vegetation distribution in acidotrophic lakes of Belarus. Nature Management. 2023;(2):67-83. (In Russ.)
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