Origin of hydrocarbons in bottom sediments of the Ivankovo Reservoir

2009 ◽  
Vol 36 (3) ◽  
pp. 337-344 ◽  
Author(s):  
I. A. Nemirovskaya ◽  
V. F. Brekhovskikh ◽  
T. N. Kazmiruk
Keyword(s):  
Bottom Sediments ◽  
Ivankovo Reservoir

Viruses in bottom sediments in a eutrophic reservoir (Ivankovo Reservoir, Upper Volga)

2015 ◽  
Vol 8 (3) ◽  
pp. 236-241 ◽  
Author(s):  
A. I. Kopylov ◽  
E. A. Zabotkina ◽  
A. V. Romanenko
Keyword(s):  
Bottom Sediments ◽  
Eutrophic Reservoir ◽  
Upper Volga ◽  
Ivankovo Reservoir

scholarly journals FEATURES OF PHOSPHORUS ACCUMULATION IN THE BOTTOM SEDIMENTS OF THE IVANKOVO RESERVOIR

2021 ◽  
Vol 6(16) (4) ◽  
pp. 139-153
Author(s):  
E.V. Gatalskaya ◽  
N.A. Belkina
Keyword(s):  
Bottom Sediments ◽  
Main Part ◽  
Clay Fraction ◽  
Size Fractions ◽  
Secondary Pollution ◽  
Ivankovo Reservoir ◽  
Phosphorus Accumulation ◽  
Suspended Form

The distribution of phosphorus in the bottom sediments of the Ivankovo reservoir, the forms of phosphorus and its content in different size fractions of the sediment were studied. It is shown that the main part of phosphorus is in mineral form and is contained in the clay fraction of sediment, which increases the risk of secondary pollution of water with phosphorus, due to its flow from bottom sediments in suspended form in the active dynamic zones of the reservoir. The estimation of the diffusion input of soluble forms of phosphorus from the bottom sediments of the reservoir accumulation zones was performed.

scholarly journals Spatial/temporal Transformation of the Volga Reservoirs’ Ground Complex. Communication 5. The Ivankovo Reservoir Bottom Sediments and Water Quality

2018 ◽  
Author(s):  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Sediment Accumulation ◽  
Atmospheric Precipitation ◽  
Hydrodynamic Pressure ◽  
Temporal Variations ◽  
Coarse Grained ◽  
Observation Data ◽  
Ivankovo Reservoir ◽  
Long Term Observation

Conditions of formation, distribution, and accumulation of bottom sediments and chemical pollutants in the Ivankovo Reservoir and their impact on water quality have been considered on the basis of the long-term observation data. According to the monitoring results, it has been stated that current bottom sediments are composed of coarse-grained alluvium (38%), fine-dispersed sediments (38%), and soil (15%). Sediment accumulation decreased two folds under Transformation of the suspended matter balances caused two times decrease of sediment accumulation resulted in the increase of the amount of suspended solids saturated with pollutants. Considerable changes occurred in deposited macrophytes; their proportion increased from 16.7 to 26 – 28%, swamped soils constituted 14% of the reservoir area. The decrease in the rate of sedimentation and changes in the area of the reservoir caused a two-fold decrease in the rate of nutrient accumulation. Re-suspension of sediments and trans-sedimentation causing a secondary pollution of water with nutrients and toxic elements occur in the presence of vast shallow zones up to 3 m depth constituting about 53% of all area of the reservoir. As a result, the water quality is of a fluctuating character. This is especially distinctly manifested during the flood period when the maximum input of pollutants of natural and anthropogenic origin from residential territories, with atmospheric precipitation, ground and river runoff is observed upon filling the reservoir to the designed level and intensive hydrodynamic pressure. The results of hydrochemical surveys performed in 2012 and in the following years confirmed insignificant changes in physical and chemical parameters of elements of the ecosystem in the Ivankovo Reservoir. Since the construction of the reservoir permanganate oxidation, total iron, manganese, water mineralization and the content of the main ions are stable and depend on hydrometeorological conditions of the year. Interannual and seasonal dynamics of these parameters is observed. Despite the spatial and temporal variations, bottom sediments are the most conservative components in the environment.

scholarly journals Strusture, biomass and production of the biotic component of the ecosystem of an growing eutrophic reservoir

2018 ◽  
Vol 26 (2) ◽  
pp. 117-122
Author(s):  
A. I. Kopylov ◽  
D. B. Kosolapov ◽  
V. I. Lazareva ◽  
N. M. Mineeva ◽  
E. G. Pryanichnikova
Keyword(s):  
Primary Production ◽  
Bottom Sediments ◽  
Aquatic Plants ◽  
Heterotrophic Bacteria ◽  
Freshwater Ecosystems ◽  
Total Biomass ◽  
Eutrophic Reservoir ◽  
Higher Aquatic Plants ◽  
Ivankovo Reservoir ◽  
Total Primary Production

Using our own data and data from the literature, we assessed the total biomass of the biotic component of the ecosystem of the Ivankovo Reservoir (Upper Volga, Russia), a eutrophic reservoir which is becoming overgrown with macrophytes. The biotic component of freshwater ecosystems is formed by communities of multicellular and unicellular organisms and viruses in the water layer (plankton) and bottom sediments (benthos) and also macrophytes and autotrophic and heterotrophic organisms growing on their surface (epiphyton). The biomass of the biotic component of the Ivankovo Reservoir equaled 39,853 tons С. Plankton, benthos and macrophytes with epiphyton equaled 3.6%, 41.6% and 54.8% of the total biomass respectively. We determined the contribution of higher aquatic plants, algae, cyanobacteria, heterotrophic bacteria, viruses, protozoans, multicellular invertebrates and fish to the formation of total biomass. The largest share was taken up by higher aquatic plants (54.5%). The second largest share was taken by heterotrophic bacteria (37.4%), most of which live in the bottom sediments. The high concentration of bacteria and invertebrates in the bottom sediments indicate significant provision of the organic substrates from the water column. The biomass of fish, the highest trophic link in the reservoir, equaled 15.0% of the biomass of their potential food substrates, invertebrate animals, and 0.7% of the total biomass of the biotic component. The greater part of the autochthonous organic compound in the reservoir is formed as a result of activity of phytoplankton, which provides 69.4% of total primary production of macrophytes, phytoepiphyton, phytoplankton and phytobenthos. The total primary production during the vegetation period was approximately forty times higher than the annual production of the fish. Currently, the share in the phytoplankton of large colonial cyanobacteria not consumed by zooplankton, the share of non-heterocystic species of cyanobacteria capable of heterotrophic feeding and the share of mixotrophic flagellates is increasing. Eutrophication of the reservoir is significantly stimulated by the development of macrophytes, and, presumably, the contribution of macrophytes to the total primary production of the reservoir will continue to increase.

The main principles and results of pollution monitoring of sediments in the river basin

2020 ◽  
pp. 14-20
Author(s):  
B. Korzhenevsky ◽  
Gleb Tolkachev ◽  
Nikolay Kolomiycev
Keyword(s):  
Heavy Metals ◽  
River Basin ◽  
Water Exchange ◽  
Pollution Monitoring ◽  
Small Rivers ◽  
Volga River ◽  
Natural Landscape ◽  
Volga River Basin ◽  
Ivankovo Reservoir ◽  
Selection Of

The problems of modern geological ecology associated with the study of pollution of sediments of water bodies by heavy metals are considered. The Volga River basin is quite heterogeneous, both in geomorphological and hydrological terms, and in thechnogenical development and usage. A fourrank taxonomy is presented for the selection of sites for monitoring, based on a combination of natural, landscape, climatic and thechnogenical factors. To the largest – the highest taxon – sites of the Ist category – bowls of reservoirs with the slopes and the urban zones, industrial and agricultural structures located within them are carried. Within these areas are allocated to smaller taxa, areas category IInd are the industrial and urban zones, areas category IIIrd are the small rivers without significant contamination and areas category IVth to conduct special observations. The examples of special observations in the study of the annual migration of heavy metals in the system «bottom sediments – water column» on the Ivankovo reservoir are highlighted. The investigations were carried out under the conditions of the standard flow rate for this reservoir and in the conditions of slow water exchange.

Diatoms in bottom sediments of thermokarst lakes of the Pechora Delta

2019 ◽  
pp. 285-290
Author(s):  
Elvira A. Zinnatova, Larisa A. Frolova ◽  
Larisa A. Frolova
Keyword(s):  
Bottom Sediments ◽  
Environmental Conditions ◽  
Sources Of Information ◽  
Thermokarst Lakes ◽  
Thermokarst Lake ◽  
Fouling Organisms ◽  
Diatom Complexes

The Northern lakes are good objects for paleoclimatic reconstructions. One of the sources of information about changes in the ecosystems of lakes are diatoms. The study of diatom complexes revealed 133 taxa belonging to 49 genera, 24 families, 13 orders and 3 classes in the bottom sediments of the thermokarst lake of the Pechora Delta. Dominated by the Holarctic representatives of benthic and fouling organisms giving preference to the alkaline environmental conditions.

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.

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