The Ratio of Living and Dead Cells and Size Structure of the Phytoplankton of the Yenisei River in the Downstream of Krasnoyarsk hps
Y. A. PONOMAREVA1,2, E. A. IVANOVA1
1Siberian Federal University, 660041, Krasnoyarsk, Svobodny ave., 79
2Institute of Computationаl modeling, SB RAS, 660036, Krasnoyarsk, Akademgorodok, 50/44
Keywords: р.Енисей, нижний бьеф, соотношение живых и мертвых клеток, размеры клеток, фитопланктон, the Yenisei River, downstream, the ratio of living and dead cells, size of cells, phytoplankton
Abstract
Based on daily examination of phytoplankton in the Yenisei River downstream of Krasnoyarsk НPS within a four-year period the share of living and dead cells is evaluated and the dimensional structure of phytoplankton is described. It has been established that in spite of being affected by the passage through the turbines of the high-pressure dam, the high water flow rate and discharges of water from the HPS, living algae predominate over the dead ones in the thickness of water of the studied part of the Yenisei River practically during the entire year with rare exception of several dates in late autumn and winter. Microphytoplankton (20-64 mkm) and nanophytoplankton (2-20 mkm) ammounting to 83 % of all algae passed the blades of the turbines of the dam largely in the intact form and the share of their living cells varied from 21 % (in the winter period) to 96 % (in the spring-summer period).
|
