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Aidarov, I. P.; Venitsianov, E. V.; Ratkovich, D. Ya.

doi:10.1023/a:1014917724193

Cited by 3 publications

(2 citation statements)

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“…However, by the end of the 20th century, it had become clear that the long-term flow regulation of lowland rivers in Russia had both positive impact on the economy and negative impact on the environment and living conditions of human beings (Aidarov, Venitsianov, & Radkovich, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…In assessing ecological water releases from the dam of a lowland river, it is necessary to consider the following points (Aidarov, Venitsianov, & Radkovich, 2002;Ratkovich, 2003):  It is impossible to return the environment to its natural state, but it is possible to restore (improve) the environment to a level at which the stable functioning of an ecosystem will be ensured, according to the Le Chatelier-Braun principle (Palmeri, Barausse, & Jorgensen, 2014).  However, by changing the flow of the regulated river, it is possible to improve the ecological condition of the river and adjacent floodplains below the dam, but this condition will be still different from the natural one.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Ecological Water Discharge from Volgograd Dam in the Volga River Downstream Area, Russia

Aidarov¹,

Nikolskii²,

Landeros-Sánchez³

2017

JAS

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Water release from reservoirs to improve the environmental condition of floodplains is of great relevance. Thus, the aim of this study was to propose a method to assess ecological drawdowns from power station reservoirs. An example of its application for the Volga River downstream area is presented. The efficiency of the quantitative assessment of ecological water discharge from the reservoir of the Volgograd hydroelectric power station is analyzed and discussed in relation to the improvement of the environmental condition of the Volga-Akhtuba floodplain, which covers an area of 6.1 × 10 3 km 2 . It is shown that a decrease of spring-summer flooding worsened significantly its environmental condition, i.e. biodiversity decreased by 2-3 times, soil fertility declined by 25%, floodplain relief deformation occurred and the productivity of semi-migratory fish decreased by more than 3 times. The economic benefit accumulated from river flow regulation was  300 × 10 6 USD in 2011, and economic damage related to the deterioration of the ecological situation was estimated at  400 × 10 6 USD in the same year. It is impossible to fully satisfy the needs of all the participants in the water-economic complex in the assessment of the environmental flows. Priority should be given to environmental requirements. It was found that assessing the ecological drawdowns confirmed the possibility of improving the floodplain environment by reducing between 15-20% the electricity production. This would allow conserving the region's biodiversity and increasing about 60-80% the natural vegetation productivity. This will prevent deformation of the floodplain relief and doubling the productivity of semi-migratory fish.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of Ecological Water Discharge from Volgograd Dam in the Volga River Downstream Area, Russia

Aidarov¹,

Nikolskii²,

Landeros-Sánchez³

2017

JAS

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Status Quo of Soil Contamination with Inorganic and Organic Pollutants of the River Oka Floodplains (Russia)

Zimmer

Kiersch

Jandl

et al. 2010

Water Air Soil Pollut

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The contamination status of rivers and their floodplains with inorganic and organic pollutants in central Russia is poorly known. We investigated the concentrations of inorganic (As, Cd, Cu, Hg, Ni, Pb and Zn) and persistent organic pollutants (hexachlorocyclohexane, PCBs, cyclodienes, DDX and other pesticides) in floodplain soils of the Oka River catchment (Russia). The level of contamination was generally lower than in the Elbe River floodplain but in the same range as in other European river systems such as floodplains of the rivers Rhine, Dřevnice and Yachroma. Only soil samples from the periphery of the city of Ryazan (200 km southeast of Moscow) had a higher anthropogenic enrichment of Cd, Cu and Zn which was comparable to the contaminated Elbe River floodplains. These soils also had the largest concentrations of persistent organic pollutants among all samples from the Oka River catchment. Therefore, the need for large-scale remediation seems to be less urgent than in Central European river catchments and mainly restricted to some "hot spot" areas.

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