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Comparison study data on the hydrochemical parameters, bacterio- and phytoplankton, and reduction–oxidation characteristics of two ponds in Krasnoyarsk are presented. These water bodies are of interest due to the fact that the ecosystems of these natural model objects respond to eutrophication in different ways. It is assumed that the reason for this difference is in the hydrophysical characteristics depending on the morphology of the basins of the water bodies rather than in the hydrochemical characteristics. 相似文献
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Gladyshev M. I. Gribovskaya I. V. Ivanova E. A. Moskvichova A. V. Muchkina E. Ya. Chuprov S. M. 《Water Resources》2001,28(3):288-296
Data of two field studies were used to analyze the concentrations of Na, K, Ca, Mg, Fe, Mn, Zn, Cu, Al, Cr, Ni, Cd, and Pb in the water, bottom deposits, zoobenthos, fish, and macrophytes of the Pond Bugach and in the soils near the pond. It was established that the majority of metals in the soils and bottom deposits correlate and their concentrations are governed by the universal geochemical factors of the region. The heavy metals were recognized that originate from anthropogenic sources and their concentrations were found to exceed the maximum admissible values for different components of the ecosystem. Five types of heavy metals migration were recognized in the soil–bottom deposits–zoobenthos–fish chain and in macrophytes. Statistically significant difference was found to exist between the concentrations of some heavy metals in the muscles of fish species with different food types (crucian carp and perch) as well as between the correlations of metals. The recorded concentrations were compared with the concentrations of metals measured in the last decade in other limnetic ecosystems in Siberia, Europe, North America, and China. 相似文献
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O. V. Anishchenko M. I. Gladyshev E. S. Kravchuk N. N. Sushchik I. V. Gribovskaya 《Water Resources》2009,36(5):594-603
Methods of atomic absorption, flame photometry, and emission spectral analysis were used to study the concentrations of metals
in water and major ecosystem components of the Yenisei River upstream of Krasnoyarsk City (conventionally background area).
The mean bulk concentrations of Al and Cu in water exceeded the MAC for water bodies used for fishery. Cu concentration in
freshwater shrimp was found to be reliably higher than that in the link of primary producers (periphyton), and Cd concentration
in caddis fly larvae was found to exceed that in water moss. The maximal concentrations of metals among the examined aquatic
organisms were recorded in periphyton. Cr concentration in the muscles of Arctic grayling was found to exceed some international
standards. 相似文献
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