Geology, geography and global energy

Scientific and Technical Journal

Geoecological monitoring of reservoirs ecosystem in the Volga delta

2014. №1, pp. 145-152

Nasibulina Botagoz M. - D.Sc. in BiolРѕgy,Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,, aspu.nasibulina@yandex.ru

Kanbetov Asylbek Sh. - C.Sc. In BiolРѕgy,Professor, Atyrau Institute of Oil and Gas, 1 Azattyk av., Atyrau, 060002, Republic of Kazakhstan,, a.kanbetov@mail.ru

Kurochkina Tatyana F. - D.Sc. in Biology,Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation ,, kyrtf@mail.ru

Dzhunusova Gaukhar G. - Younger research assistant, Atyrausky branch of Kazakh Scientific Research Institute of Fisheries, 80 Bergaliyev st., Atyrau, 060014, Republic of Kazakhstan,, a.kanbetov@mail.ru

In the article data of observations over a condition of surface water of a land in the territory of the Kazakhstan sector on separate sites of the river Kigach are submitted. The river Kigach in a high water is saturated through Buzan, Akhtuba, and in mean water – only through Buzan. Near the village Shortanbay from the river Kigach, the large SharonovkCanal flowing into the Caspian Sea to the left separates. Water level fluctuations in channels are generally caused by the VolgaRiver drain. The observations made during the spring period, showed rather low rates of a water level at water post of Kotyaevk (river Kigach) that can negatively affect development of forage reserve and efficiency of reproduction of fishes catadromous. Water temperature during the spring period on investigating sites varied from 10,5 to 10,8 °C, the oxygen rate on the average was 8,3 mg/dm3. The content of biogenic combinations, sulfates and chlorides in tests of water were within norm, oil hydrocarbons and heavy metals are also found, concentration of which didn’t exceed rated value. Among fodder objects the zooplanktonic organisms, presented by crawfish plankton, were studied, which were remarkable for quite moderate specific variety of the structure. In total 17 forms of the lowest crayfish are found in the river, from them 10 forms are copepods, Cladocera-4 and Rotifera-3. Distribution of the general biomass of a zooplankton on stations of research happened unevenly. The maximum concentrations of plankters (401,8 mg/m3) were concentrated in front of estuarine zone of the river Kigach, around the village Damba. As a whole, quantitative and quality rates of plankton indicate satisfactory conditions of spawning of fishes-planktofagov.

Key words: ecosystem,monitoring,biogene substances polluting substances,zooplankton,

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