Comprehensive monitoring of the Klyazma reservoir

2020 ◽  
pp. 17-25
Author(s):  
Vikenty L. Razumovsky
Keyword(s):  
Chemical Composition ◽  
Bottom Sediments ◽  
Environmental Changes ◽  
Water Area ◽  
Graphical Analysis ◽  
Anthropogenic Factors ◽  
Layer By Layer ◽  
Reservoir Water ◽  
Chemical Composition Of Water ◽  
Diatom Complexes

The research was carried out during the comprehensive monitoring of the Klyazma reservoir in 2019. The work is devoted to the assessment of long-term environmental changes under the influence of natural and anthropogenic factors. The research combines two traditional methods of analysis. A layer-by-layer study of diatomic complexes and chemical composition in the bottom sediments of the reservoir was carried out. The results obtained were compared with the results of comprehensive monitoring on the taxonomic composition of phytoplankton and the chemical composition of water in the reservoir's water area. The results of previous studies on the chemical composition of water in the reservoir were used. In addition to the traditional forms of chemical and hydrobiological analysis, an innovative method of graphical analysis was applied to phytoplankton complexes and the principle of unification of bioindication methods was applied for diatom complexes from sediment columns. The main scenarios of taxonomic proportions transformations in phytoplankton and diatom complexes were determined using the method of graphical analysis for the Klyazma reservoir water area. The transformations are caused by the influence of water from the Moscow channel and the planned annual lowering of the water level in the reservoir. Bottom sediments showed a regular increase in the reservoirs level of saprobisation. Presumably, this is due to a non-linear increase in the number of tourists and an cahnges in recreational load. Pronounced accumulation of Cu, Zn and other heavy metals in the coastal zone of the reservoir was confirmed.

Assessment of trophic status long-term transformations in Rybinsk and Ivankovo reservoirs (diatom analysis)

2020 ◽  
pp. 26-32
Author(s):  
Lev V. Razumovsky
Keyword(s):  
Trophic Status ◽  
Environmental Changes ◽  
Water Area ◽  
Anthropogenic Factors ◽  
Species Structure ◽  
Layer By Layer ◽  
Integrated Monitoring ◽  
Available Information ◽  
Diatom Complexes

The studies were conducted under the integrated monitoring of the Rybinsk and Ivankovo reservoirs. The work is devoted to the assessment of long-term environmental changes under the influence of natural and anthropogenic factors. It was suggested to combine the two traditional methods of analysis. Initially, diatom complexes from bottom sediments were analyzed layer by layer. Then the results obtained were compared with the available information database on the species composition of phytoplankton complexes. Information about phytoplankton was avalible as a result of biomonitoring of reservoirs. The possibility of carrying out the work was determined by the fact that monitoring in the water area of the Rybinsk and Ivankovsky reservoirs was carried out for several decades. It was proposed to assess the reliability and comparability of the results obtained in assessing changes in the trophic status of reservoirs. The saprobity index (S) was calculated for diatom complexes from sediments. The data obtained was compared with similar calculations for the species structure of phytoplankton complexes.

scholarly journals Many-year Dynamics and Current Trends of the Pavlovsk Reservoir Area Water Chemical Composition Changes

2020 ◽  
pp. 19-34
Author(s):  
Keyword(s):  
Chemical Composition ◽  
Water Concentration ◽  
Petroleum Products ◽  
Water Area ◽  
Modern Trend ◽  
Reservoir Water ◽  
Chemical Indicators ◽  
Chemical Index ◽  
Chemical Composition Of Water ◽  
Chemical Studies

At present, changes have occurred in the basin and water area of the Pavlovsky reservoir, affecting the chemical composition of the reservoir water. The combination of many factors (series of low-water years, termination of milk alloy, increase of recreational load, change of the share of diffuse contamination, etc.) do not allow to predict the modern trend of transformation of chemical composition of water. Considering that no gydro/chemical studies of Pavlovsky reservoir have been carried out in recent decades, studies of modern processes of transformation of chemical composition of this reservoir are relevant. For this purpose BashNIIVKh in 2018-2019 carried out hydro/chemical studies of the reservoir, in two years water samples were taken from the surface and from the bottom, as well as bottom deposits. In 2018 samples were taken according to 30 chemical indicators on 10 struts, and in 2019 – according to 10 chemical indicators on 7 struts. Also, the results of previous studies have been analyzed. Due to the large volume of the obtained material, this work only considered the results of studies of multi-year dynamics and modern trend of change of chemical composition of water (concentration of chemicals) in the water area of the Pavlovsky reservoir for 10 chemical indicators of water on 7 branches. Concentrations of Sr, Mn, petroleum products are shown to decrease along the length of the reservoir in the water; Increasing - Zn, Hg, phenols of organic substances; evenly distributed – Fetotal, Ptotal, Cu. In the many-year dynamics, Fetotal, Mn, petroleum products, phenols (in the inlet), COD show a trend of decrease of chemical indicators in water; Upward trend – Ptotal, Cu, Zn, phenols (in the exit). It has been established that the average annual concentrations of chemical indicators in the water of the Pavlovsky reservoir are related to the average annual inflow. The chemical values of Fe and Mn have a direct link (when the inflow increases, the concentration of the chemical index increases), and Ptotal, Cu, Zn, phenols and COD have a feedback (when the inflow increases, the concentration of the chemical index decreases).

scholarly journals Current Status of Water Bodies of Karelia as a Result of Natural, Climatic and Anthropogenic Factors’ Impact

2017 ◽  
Author(s):  
Keyword(s):  
Chemical Composition ◽  
Atmospheric Precipitation ◽  
Point Sources ◽  
Water Bodies ◽  
Anthropogenic Sources ◽  
Current Status ◽  
Anthropogenic Factors ◽  
Biogenic Elements ◽  
Lake Ladoga ◽  
Reservoir Water

It has been shown that the status of some Karelian water bodies had changed as a result of human impact and atmospheric precipitation has a role in the surface waters’ chemical composition formation. Assessment of biogenic elements and organic matter input to the Lake Onego and the Lake Ladoga from various natural and anthropogenic sources has been done. Higher load from point sources in comparison with diffuse sources has been registered for the Lake Onego in comparison with the Lake Ladoga. Many-year change of the Vygozero reservoir water chemical composition has been presented. This reservoir receives the Segezh paper-pulp plant waste waters and the Kenti River system waters with technogenic waters from the Kostomuksha mining/concentrating plant. It has been stated that atmospheric precipitations serve the main source of the biogenic elements and heavy metals input, while input of mineral and organic substances with the precipitation is insignificant. For the first time assessment of the Karelian water bodies’ state caused by the natural, climatic, and anthropogenic factors’ impact has been done.

scholarly journals Formation of the chemical composition of water and bottom sediments of the Pavlovskoe reservoir

2018 ◽  
Vol 3 ◽  
Author(s):  
R.F. Abdrakhmanov ◽  
◽  
A.O. Poleva ◽  
S.A. Valitov ◽  
◽  
...  
Keyword(s):  
Chemical Composition ◽  
Bottom Sediments ◽  
Chemical Composition Of Water

Analysis of Rybinsk and Ivankovo reservoirs diatom complexes and phytoplankton associations long-term transformations

2019 ◽  
pp. 83-86
Author(s):  
Lev V. Razumovsky ◽  
Vikenty L. Razumovsky
Keyword(s):  
Bottom Sediments ◽  
Methodological Approach ◽  
Graphical Analysis ◽  
Comprehensive Analysis ◽  
Diatom Complexes

As a result of monitoring, a unified methodological approach was formulared for the ecosystems of the Ivankovsky and Rybinsk reservoirs, with comprehensive analysis of phytoplankton associations and diatom complexes from bottom sediments. In addition to traditional forms of hydrobiological analysis, the author's method of graphical analysis was applied.

scholarly journals Assessment of water quality if the Argazin reservoir and peculiarities of the bottom sediments impact upon it.

2021 ◽  
pp. 6-23
Author(s):  
Keyword(s):  
Water Quality ◽  
Cluster Analysis ◽  
Chemical Composition ◽  
Bottom Sediments ◽  
Water Area ◽  
Hydrodynamic Modeling ◽  
Migration Routes ◽  
Chelyabinsk Oblast ◽  
Chemical Indicators ◽  
Technological Impact

The article presents the results of research on the chemical composition of the water of the largest reservoir in the Chelyabinsk Oblast that is the Argazin reservoir, which historically experiences technological impact of the metallurgical facilities. The connectivity of the main chemical indicators of water quality was evaluated using cluster analysis. Hydrodynamic modeling was carried out, which enabled to determine the migration routes of pollutants (AR) through the water area of the Argazin reservoir, to predict the concentrations of AR in the event of their input through the Miass River. Conclusions have been made about the significant self-purification ability of the reservoir. The main unfavorable factors in which water quality in the reservoir may deteriorate were identified.

scholarly journals Development of Integral Criteria of Separation of Reservoirs Bottom Sediments Potentially Hazardous Zones.

2016 ◽  
pp. 27
Author(s):  
Keyword(s):  
Heavy Metals ◽  
Bottom Sediments ◽  
Water Mass ◽  
Water Area ◽  
Reservoir Water ◽  
Factors Influencing ◽  
Secondary Pollution ◽  
Surface Water Modeling ◽  
Main Factors ◽  
Hazard Level

In 2011–2013 complex experiments were conducted on the Uchinsk reservoir water area during different hydrological seasons. As a result of these researches a hydrodynamic model of Uchinsk reservoir has been developed on the basis of SMS v.10.1 (Surface-water Modeling System) licensed software package by AQUAVEO LLC in 2d approximation.The main factors influencing secondary pollution caused by bottom sediments, spreading of pollutants supplied from bottom sediments, as well as possibility to control the reservoir water quality have been highlighted. Quantitative hydro/physical, hydro/dynamic, and hydro/chemical criteria for forecasting of the probability of secondary pollution caused by the reservoir bottom sediments have been developed. A concept of reservoir zoning by the hazard level of water mass secondary pollution with heavy metals during the period of conditions favorable for heavy metals output from bottom sediments. On the basis of these criteria mapping of the Uchisk reservoir water area with the use of a mathematical model has been carried out. Measures on the reduction of the reservoir secondary pollution probability have been proposed.

Aerial photography of the water area

2020 ◽  
Vol 956 (2) ◽  
pp. 18-24
Author(s):  
V.I. Pavlov
Keyword(s):  
Chemical Composition ◽  
Water Resources ◽  
Aerial Photography ◽  
Water Surface ◽  
Water Area ◽  
Aerial Photographs ◽  
Bottom Temperature ◽  
Chemical Composition Of Water ◽  
Land Survey ◽  
Water Space

During the development of water resources the characteristics of excitement, direction, and flow velocity, depth, points of bottom, temperature and chemical composition of water is to be taken into account. Some of these indicators are determined through the results of measuring single aerial photographs and their stereoscopic pairs. Making aerial photography (APS) of water surface on technology for topographic land survey enables obtaining only single overlapping aerial photographs, as the water surface is in constant motion. Stereoscopic pairs of aerial photographs can be obtained if photographing is performed simultaneously by two aerial cameras (AFA) with close elements of internal orientation. The author considers two technological schemes of using two AFA in aerial photography of water space

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