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Contemporary Problems of Ecology

2013 year, number 3

Effect of Environmental Factors on the Structure and Functioning of Biocoenoses of Hyperhaline Water Reservoirs in the South of West Siberia

L. I. LITVINENKO, A. I. LITVINENKO, E. G. BOYKO, K. V. KUTSANOV
FSUE Gosrybcenter, FSEE HPE Tyumen State Agricultural Academy, 625023, Tyumen, Odesskaya str., 33
litvinenko_li@mail.ru
Keywords: biocoenosis of hyperhaline water reservoir, artemia, salinity, temperature

Abstract

On the basis of perennial monitoring (19952010) of hyperhaline water reservoirs of the south of West Siberia with salinity 28 to 417 g/l, four seasons in the development of biocoenoses were distinguished, integrating results of the investigation of the effect of environmental factors on the species composition and productivity of biocoenoses were presented. The decisive effects of temperature on the seasonal cycles of hydrocole development, salinity on the productivity and composition of biocoenoses were revealed. The highest species diversity was observed in summer at temperatures above 12 C; at negative temperatures the fauna is represented only by artemia cysts. With an increase of salinity from 28 to 100 g/l the number of species decreases. For salinity 100 g/l, the fauna is represented mainly by gill-footed Artemia crustaceans artemias. Hyperhaline biocoenoses are the most productive at salinity 150180 g/l.