S. V. Bykova, M. V. Umanskaya, N. G. Tarasova, O. V. Mukhortova, M. Yu. Gorbunov, E. S. Krasnova
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Abstract
A comparative characteristic of the structure of planktonic community is given for different parts of a lowland reservoir (the Kuibyshev Reservoir, the Volga River). The level of the effect of plankton (and seston as a whole) of tributaries on the plankton and seston of the reservoir is shown, depending on their location in different morphometric (hydrological) zones and the discharge regime of water masses through the nearby dams. The contribution of the inflow in the upper part of the reservoir to the total carbon concentration in the receiving water body is higher (81 and 61% of the total organic carbon of plankton on weekends and weekdays, respectively) than in the lower part of the reservoir (4.4 and 1.5%). The effect of HPP operation on the variation amplitude of the total biomass of planktonic community and its structure in the near-dam part of the reservoir (the upper Pool of the dam) is evaluated. In the period of a decrease of water discharge and, accordingly, lower flow velocity, the total plankton biomass was maximal on weekends with a parallel increase in the proportion of cyanobacteria in its structure.
期刊介绍：
Water Resources is a journal that publishes articles on the assessment of water resources, integrated water resource use, water quality, and environmental protection. The journal covers many areas of research, including prediction of variations in continental water resources and regime; hydrophysical, hydrodynamic, hydrochemical and hydrobiological processes, environmental aspects of water quality and protection; economic, social, and legal aspects of water-resource development; and experimental methods of studies.
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