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Article
Open AccessMethane Emission from Flooded Soils of Rice Paddies in Rostov Oblast
The methane fluxes to the atmosphere from the rice fields in the Rostov oblast (south of the European Russia) are analyzed using the results of field chamber measurements. In addition to the measurements of me...
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Article
Methane Distribution in Lake Baikal Water
Data on the distribution of methane concentration in water in the open water area and the northern end of Lake Baikal and in the source of the Angara R. collected in September 2016 and 2019 are analyzed. To ap...
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Article
Spatiotemporal Dynamics of Copper and Zinc Concentrations in the Lower Don Water
Spatiotemporal dynamics of concentrations of dissolved forms of copper and zinc in the water of the lower Don River was studied and compared with changes in mineralization, temperature, and concentrations of m...
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Article
Sulfide Sulfur in Water Objects with Different Mineralization
Hydrogen sulfide, like other sulfides, is formed in aquatic environments due to sulphate reduction processes and putrefactive decomposition of organic matter of bottom sediments, as well as due to the influx o...
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Article
Sulfite-Reducing Clostridia and their Participation in Methane and Hydrogen Sulfide Formation in the Bottom Sediments of Water Objects and Streams of the ETR South
The article discusses the role of sulfite-reducing clostridia in methane and hydrogen oxide formation in bottom sediments. The examined materials have been accumulated in the course of expeditions carried out ...
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Article
Methane in Water and Bottom Sediments of Lake Baikal
The distribution of methane concentration measured in 2014 and 2015 in different parts of Lake Baikal has been analyzed. In the period of expedition studies, methane concentration in lake water and bottom sedi...
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Article
Mercury in the Water of Small Rivers of the Onega Bay Basin of the White Sea
The results of expeditionary studies of the behavior of mercury in the water of small rivers in the basin of Onega Bay of the White Sea are presented. The priority forms of mercury migration are determined, an...
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Article
Dredging Influence on Methane Concentration in the Taganrog Bay
The effects of dredging and dum** on methane concentration in water and bottom sediments of the Taganrog Bay (the Sea of Azov) are studied. It is shown that dredging operations are accompanied by the inflow ...
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Article
Methane and Sulfide Sulfur in the Bottom Sediments of Lake Baikal
The paper analyzes data on the distribution of methane and sulfide sulfur concentrations in the upper layer of the bottom sediments in different areas of Lake Baikal obtained during expeditions in 2014 and 201...
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Article
Sulfide Sulfur in Lake Baikal Sediments
The distribution of sulfide sulfur in different parts of Lake Baikal in 2014 and 2015 is analyzed. The concentration of sulfide sulfur in the bottom sediments varied from 0.002 to 0.830 mg/g dry weight (the av...
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Article
Mercury in White Sea Bottom Sediments: Distribution, Sources, and Deposition Chronology
For the first time, vertical and lateral distribution patterns of mercury in White Sea bottom sediments have been determined. An abrupt change in the nature of mercury concentrations has been revealed, with a ...
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Article
Influence of the Grain Size Composition of Bottom Sediments in Lake Baikal on the Distribution of Methane and Sulfide Sulfur
Based on the study of separate areas of Lake Baikal (depth from 14 to 250 m), influence of the grain size composition of bottom sediments on the distribution of methane and sulfide sulfur is examined. Concentr...
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Article
Field Simulation of Cadmium Pollution of a Freshwater Body
An experiment in mesocosms installed in a fish-rearing pond was used to adequately simulate the character of self-purification, migration, and the redistribution of cadmium and its chemical forms in major comp...
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Article
Heavy metals in soils and plants of the don river estuary and the Taganrog Bay coast
Natural and anthropogenic factors determining the distribution and accumulation features of Pb, Cu, Zn, Cr, Ni, Cd, Mn, and As in the soil–plant system of the Don River estuary and the northern and southern Ru...
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Article
Effect of plants on processes of methane cycle in bottom deposits and soil rhizosphere
This article contains an analysis and generalization of published data and our own data on the effect of living plants on the formation, oxidation, and concentration of methane in water and boggy ecosystems. P...
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Article
Computing the methane cycle elements in the aquatic ecosystems of the Sea of Azov and the World Ocean based on empirical formulae
Empirical relationships between methane concentration and the rates of its oxidation and emission in the sediment-water-atmosphere system are computed using the experimental data and the data presented in the ...
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Article
Specific Features of Content and Mobility of Heavy Metals in Soils of Floodplain of the Don River
The gross heavy metal contents were studied in the main soil types of the floodplain of the estua-rine segment of the Don River. The ratio of elements strongly bound to soil components to those that are weakly...
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Article
The first complex studies of Kyanda River (Onega Bay, the White Sea) and its marginal filter (July 22 to August 3, 2014)
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Article
Distribution of methane concentration in coastal areas of the Gulf of Petrozavodsk, Lake Onega
The results of many-year observations of methane concentration in the water and bottom sediments of coastal areas in the Gulf of Petrozavodsk are given. The effect of various natural and anthropogenic factors ...
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Article
Methane emission from peat deposits of raised bogs in Pskov oblast
We discuss the results from natural experiments on determination of methane emission and its content in the main types of microlandscapes of raised bogs in Pskov oblast. The methane concentration in peat water...
