Changes in plankton abundance, biomass, and chemical composition under the influence of the cooling system of the Beloyarsk Nuclear Power Plant |
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Authors: | V P Guseva M Ya Chebotina |
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Institution: | (1) Institute of Plant and Animal Ecology, Ural Division, Russian Academy of Sciences, ul. Vos'mogo Marta 202, 620144 Yekaterinburg, Russia |
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Abstract: | The abundance and biomass of phytoplankton and zooplankton proved to noticeably decrease after the water passed through the
cooling system of the Beloyarsk Nuclear Power Plant: the phytoplankton perished by 38% (65 metric tons per day), and the zooplankton,
by 55% (6 t/day). In the period between 1985 and 1991, the concentration of60Co in the plankton of water intake and discharge canals varied from 120 to 1400 Bq/kg dry weight, and that of137Cs, from 150 to 1040 Bq/kg dry weight, which is commensurable with the content of radionuclides in the plants and grounds
of the Beloyarsk reservoir. In 1985, it was noted that the plankton passing through the cooling system of the nuclear power
plant became enriched with Ca, Fe, Mg, Mn, Co, Cs, Cu, Mo, Ni, Pb, Si, Sn, Ti, V, and W. |
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Keywords: | phytoplankton zooplankton abundance biomass radionuclides the Beloyarsk reservoir |
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