Shkundina F.B., Poleva A.O., Zaripova R.T. CHANGE OF THE ECOLOGICAL STATE OF UMAGUSINSKOE RESERVOIR AFTER BUILDING

Faina Borisovna Shkundina

Doctor of biology, professor, Department of ecology and botany, Bashkir State University
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Zaki Validi St., 32, 450076 Ufa, Russian Federation

Alexandra Olegovna Poleva

PhD in biology, senior research associate, Laboratory of hydrogeology and geoecology,
Institute of Geology Ufa Scientific Center Russian Academy of Sciences
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K. Marks St., 16/2, 450077 Ufa, Russian Federation

Regina Talgatovna Zaripova

Graduate Student, Department of Ecology and Botany,
Bashkir State University
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Zaki Validi St., 32, 450076 Ufa, Russian Federation


 

Abstract. Phytoplankton and hydrochemical indicators Yumaguzinskoye reservoir (South Urals) were studied. Chemical composition was sufficiently uniform and characterized by hydrocarbonate magnesium-calcium composition. Phytoplankton sampling and processing carried out by standard methods. Development of Yumaguzinskoye reservoir is characterized by the moderate eutrophication. At present, the situation has improved and consistents with our forecast of 0,95 % of the runoff.

It was identified 80 species and intraspecific taxa of algae and cyanobacteria at the highest species diversity of diatoms and green algae in 2012, 2014 and 2015. The dominant species were Chlorella vulgaris Beijer, Kirchniriella obesa (W. West) Schimidle, Synechocystis salina Sauv., Peridinum cinctum (O. Mull.) Ehr., Merismopedia minima G.Beck, Scenedesmus quandricanda (Turp.) Breb in size; Chlorella vulgaris Beijer, Chlamydomonas vulgaris Ehr., Peridinum cinctum (O. Mull.) Ehr., Euglena viridis Stein. in biomass. It has been a trend of increasing the number and biomass in 2006-2007 years and a decrease in these indicators in 2012-2015. Downstream water salinity gradually decreases. There is some dilution near the dam.

The current state of the phytoplankton indicates the formation of oligotrophic conditions favorable for the formation of a satisfactory quality of water intakes located in the middle reaches of the Belaya river.

Key words: phytoplankton, reservoir, eutrophication, “flowering” of water, algal community, ecosystem, the dominant complexes of aquatic organisms.

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CHANGE OF THE ECOLOGICAL STATE OF UMAGUSINSKOE RESERVOIR AFTER BUILDING by Shkundina F.B., Poleva A.O., Zaripova R.T. is licensed under a Creative Commons Attribution 4.0 International License.

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