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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Print: 0018-8166
ISSN Online: 1943-5991

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v35.i6.100
pages 113-123

Sanitary-ecological and Trophic Conditions of the Middle Reaches of the Yenisei River and its Tributaries

L. A. Shchur
Institute of Biophysics, Siberian Branch, Akademgorodok; Institute of Computerized Simulation Siberian Department Russian Academy of Sciences; Institute of Ecology of Water Bodies Used for Fishery and Terrestrial Biosystems, Krasnoyarsk, Russia
A. D. Aponasenko
Institute of Computerized Simulation Siberian Department Russian Academy of Sciences; Institute of Ecology of Water Bodies Used for Fishery and Terrestrial Biosystems, Krasnoyarsk, Russia
V. N. Lopatin
Institute of Computerized Simulation, Siberian Department, Russian Academy of Sciences; and Institute of Ecology of Water Bodies Used for Fishery and Terrestrial Biosystems, Krasnoyarsk, Russia
V. S. Filimonov
Institute of Biophysics, Krasnoyarsk, Russia
N. V. Shepelevich
Institute of Biophysics,Siberian Division of Russian Academy of Sciences, Krasnoyarsk, Russia

ABSTRACT

In summer periods 1989−1994, a complex of hydrobiological investigations in the middle reaches of the Yenisei river (Krasnoyarsk region) and its main tributaries were performed. Spatial distribution, quantitative, taxonomic characteristics of phytoplankton, bacterio- and phytoperiphyton, saprobicity indications, and production-destruction intensity were under study. Proceeding from these data, the waters in the Yenisei basin are classified as mesotrophic, corresponding to quality class 3 ('satisfactory pure').


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