scholarly journals Geo-ecological characteristics of the small lakes bottom sediments in the North of Western Siberia

2021 ◽  
Vol 6 (4) ◽  
pp. 299-307
Author(s):  
Gulnara N. Shigabaeva ◽  
Andrey V. Soromotin ◽  
Еvgeny V. Galunin ◽  
Аnna V. Ruseikina ◽  
Anna А. Kurbash ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Western Siberia ◽  
Statistical Processing ◽  
Point Of View ◽  
Quantitative Chemical Analysis ◽  
Ecological State ◽  
Small Lakes ◽  
The North ◽  
Mobile Forms ◽  
State Of Water

The article analyzes and provides data on the processes of accumulation of heavy metals by bottom sediments from the point of view of environmental assessment. The purpose of this paper is to identify the degree of anthropogenic influence on the lakes of the Tazovskiy and Surgut districts, and assess the ecological state of water bodies and adjacent territories. The main processes occurring in natural reservoirs, which lead to the transfer of toxicants into the environment, are considered. The data of quantitative chemical analysis of bottom sediments of two groups of natural reservoirs with an assessment of their ecological state according to the results of statistical processing of the measured values were obtained. Excess concentrations of metals were recorded: for mobile forms – 2200 times for Fe, 1050 times for Mn, 35 times for Cr, 20 times for Co, up to 15 times for Ni, 5 times for Cu, 3 times for Pb, for acid-soluble forms – 45 000 times for Fe, 550 times for Pb, up to 75 times for Ni, 525 times for Mn, 105 times for Cr, 50 times for Cu, 16 times for Co. The geochemical interpretation of the results of the factor analysis is presented.

Background Contents of Heavy Metals in Soils and Bottom Sediments in the North of Western Siberia

2019 ◽  
Vol 52 (4) ◽  
pp. 380-395 ◽  
Author(s):  
M. G. Opekunova ◽  
A. Yu. Opekunov ◽  
S. Yu. Kukushkin ◽  
A. G. Ganul
Keyword(s):  
Heavy Metals ◽  
Bottom Sediments ◽  
Western Siberia ◽  
The North ◽  
Heavy Metals In Soils

scholarly journals Mollusks of the family Valvatidae Gray, 1840 (Gastropoda, Heterobranchia) of the Taz River basin (Western Siberia)

2021 ◽  
Vol 31 (1) ◽  
pp. 7-19
Author(s):  
S. I. Andreeva ◽  
N. I. Andreev ◽  
E. S. Babushkin
Keyword(s):  
River Basin ◽  
Western Siberia ◽  
Point Of View ◽  
Taiga Zone ◽  
Ob River ◽  
The North ◽  
Annotated List ◽  
The Family ◽  
Gastropod Mollusks ◽  
First Time

The fauna of the rivers of the north of Western Siberia that do not belong to the Ob’ River basin is of particular interest from the point of view of zoogeography and understanding of the processes of formation of the freshwater malacofauna. Starting in the taiga zone, these rivers flow north and cannot serve as a way of interzonal dispersal of species from lower latitudes. However, information about the fresh-water malacofauna of these river basins is poorly presented in the scientific literature, some of the published species findings are doubtful or erroneous. The gastropod mollusks of the family Valvatidae of the Taz river basin (Western Siberia) are considered. The basin is located closer to the Yenisei than to the Ob’ River basin. The study was based on original authors’ material represented by both qualitative and quantitative samples. It has been found that eight species of mollusks of the genus Valvata occurs in the water reservoirs and streams of the Taz basin, an annotated list of species is presented, and a brief zoogeographic characteristic is given. Three species (Valvata helicoidea, V. sorensis and V. korotnevi) are for the first time recorded from the basin, one of them (V. korotnevi) is for the first time recorded from the Western Siberia waterbodies.

scholarly journals Mineral Composition of Sapropelles of Lakes of the Right Bank of the Ob River (Middle Ob Region)

2019 ◽  
Vol 9 (1) ◽  
pp. 77
Author(s):  
M. P. Sartakov ◽  
E. M. Osnitsky ◽  
K. Iu. Kudrin ◽  
N. S. Larina
Keyword(s):  
Mineral Composition ◽  
Bottom Sediments ◽  
Western Siberia ◽  
Organic Substances ◽  
Small Lakes ◽  
X Ray ◽  
Ob River ◽  
The Right

The objective of this work is to study the mineral composition of bottom sediments of eight small lakes located on the right bank of the Ob River (Western Siberia) in the Surgut region of the Khanty-Mansiysk Autonomous Okrug - Yugra. The studies were carried out using wave dispersive X-ray fluorescence (WDFR) spectroscopy. The content of organic substances, ash, and oxides in the ash in the samples was determined. Based on these data, the studied bottom sediments were classified. The bottom sediments of Lake S-1 are siltstone sands, lakes Vach Lor and S-189 - weakly sapropelic siltstone sands, lakes S-5, S-6, S-3, S-89, and S-294 - typical sapropels. The article presents the content of the main elements in the ash of the studied samples.

scholarly journals Use of bioindication and biotesting methods in assessing the ecological state of the territory of gas condensate deposits in the north of Western Siberia

2018 ◽  
Vol 63 (3) ◽  
pp. 326-344
Author(s):  
Marina G. Opekunova ◽  
◽  
Anatoli Yu. Opekunov ◽  
Irina Yu. Arestova ◽  
Stepan Yu. Kukushkin ◽  
...  
Keyword(s):  
Western Siberia ◽  
Gas Condensate ◽  
Ecological State ◽  
The North

scholarly journals Analysis of the natural water bodies’ contamination within the big city (for example Didorivskii and Horihuvatskii streams)

2016 ◽  
pp. 66-71
Author(s):  
K. Shyrokun
Keyword(s):  
Research Problem ◽  
Point Of View ◽  
Water Bodies ◽  
Ecological State ◽  
Negative Effects ◽  
Ecological Features ◽  
Industrial Buildings ◽  
State Of Water ◽  
Big City ◽  
Surrounding Areas

Relevance of the research problem is the constant deterioration of the ecological state of water bodies in Kiev. The aim is to study the small ponds in big city (for example, stages of Didorivskii and Horihuvatskii streams). For the purpose of research, faced the task to investigate ecological features of the current state of water cascades of Didorivskii and Horihuvatskii streams and surrounding areas, quantify the content of chemical compounds using specialized test systems and analyze changes that took place in the period between studies. Objects of the study are stages of Didorivskii and Horihuvatskii streams and the surrounding landscape group. Subject of investigation is the ecological state of water bodies in Didorivskii and Horihuvatskii streams and landscapes, methods and measures to improve the environment within their pools. Cascades of urban ponds are among the richest composition in species and recreation major from the point of view of natural and man-made systems. This explains the relevance of the study of these reservoirs. Overall, Horihuvatskii stream experienced more negative effects of human activities than Didorivskii, because of the proximity of a powerful corridor and residential and industrial buildings.

scholarly journals Authigenic Carbonates in the Water–Biota–Bottom Sediments’ System of Small Lakes (South of Western Siberia)

Minerals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 552
Author(s):  
Ekaterina Ovdina ◽  
Vera Strakhovenko ◽  
Emilia Solotchina
Keyword(s):  
Bottom Sediments ◽  
Western Siberia ◽  
Small Lakes ◽  
The South ◽  
Authigenic Carbonates ◽  
X Ray ◽  
Geochemical Barriers ◽  
Water Composition ◽  
Carbonate Formation ◽  
Water Bottom

We studied 46 small, drainless lakes in various landscape types: The sub-taiga (Vasyugan plain), forest–steppe (Baraba lowland), and steppe and subzone of ribbon forests (Kulunda plain). Sampling of lake components (sediments, water, and biota) was performed. The materials were analyzed via a combination of modern analytical methods (atomic absorption spectroscopy, X-ray fluorescence, scanning electron microscopy and X-ray diffractometry). It was found that in the south of Western Siberia, lakes with a bicarbonate-sodium water composition are widespread against the background of general landscape zoning. This composition contributes to the abundant growth of biota in the lakes, which leads to the processes of authigenic carbonate formation from calcite–dolomite series and aragonite on geochemical barriers, i.e., drifting biota–water, submerged biota–water, and water–bottom sediments against a background of terrigenous demolition and organic matter accumulation. The article shows the differences in the composition and structure of low-temperature carbonate minerals formed on various geochemical barriers. It was found that low-magnesium calcite and aragonite are the most common authigenic carbonates in small lakes in the south of Western Siberia and are formed on all three geochemical barriers in lakes. High-magnesium calcites and Ca-excess dolomites are formed only at the water–bottom sediment barrier in lakes with HCO3–Na and Cl–HCO3–Na water composition at pH > 9 and with a total dissolved solids > 3 g·L−1 (in some lakes of HCO3-Na composition with a TDS < 3 g·L−1 and pH > 9).

Selective statistical estimates of multi-year monthly concentrations of biogenous pollution of small rivers of the Northwest zone of the Russian Federation

2020 ◽  
pp. 9-13
Author(s):  
Sergey Kovalenko
Keyword(s):  
Statistical Processing ◽  
Point Of View ◽  
Small Rivers ◽  
Statistical Parameters ◽  
Monthly Data ◽  
Statistical Estimates ◽  
Scientific Task ◽  
The Russian Federation ◽  
Agricultural Areas

The management of surface watercourses is an urgent scientific task. The article presents the results of statistical processing of long-term monthly data of field observations of hydrological and hydrochemical parameters along the Upper Yerga small river in the Vologda region. Sampling estimates of statistical parameters are obtained, autocorrelation and correlation analyzes are performed. The limiting periods from the point of view of pollution for water receivers receiving wastewater from drained agricultural areas are identified.

Paleoecological study of bottom sediments of the lake Goluboye (Karelian Isthmus) according to the results of diatom analysis

2019 ◽  
pp. 265-269
Author(s):  
Angelina E. Shatalova ◽  
Uriy A. Kublitsky ◽  
Dmitry A. Subetto ◽  
Anna V. Ludikova ◽  
Alar Rosentau ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Bottom Sediments ◽  
Modern Science ◽  
Karelian Isthmus ◽  
The Baltic Sea ◽  
Diatom Analysis ◽  
North West ◽  
The North ◽  
Important Direction ◽  
The Baltic

The study of paleogeography of lakes is an actual and important direction in modern science. As part of the study of lakes in the North-West of the Karelian Isthmus, this analysis will establish the dynamics of salinity of objects, which will allow to reconstruct changes in the level of the Baltic Sea in the Holocene.

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

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