Comparative Evaluation of Hydrologic-Hydrochemical State of the Water Reservoirs in the Novomoskovsk Area of the Tula Region in Autumn

Lapin, S. A.

doi:10.36038/0234-2774-2017-18-3-328-335

2017

DOI: 10.36038/0234-2774-2017-18-3-328-335

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Comparative Evaluation of Hydrologic-Hydrochemical State of the Water Reservoirs in the Novomoskovsk Area of the Tula Region in Autumn

S. A. Lapin¹

Abstract: Current condition of the Shatskoye and Lubovskoye reservoirs is described based on results of hydrological-hydrochemical survey. The reservoirs are under heavy anthropogenic press due to many years of industrial exploitation. The analysis is conducted in comparison with the neighboring Pronskoye reservoir which performs without any industrial press. The former reservoirs are subject of reorientation to recreational and fishery water bodies. Yet it is substantiated that the process is in the very first phase.

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2024

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Carbon Accumulation in Peat Soils of Floodplain Mires of the North-East of the Middle-Russian Upland

Volkova,

Leonova,

Golovchenko

2024

Počvovedenie

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The study of the structure of peat deposits of the Bolsheberezovskoye and Podkosmovo inundated mires which were formed during the Atlantic – subboreal periods of the Holocene in the valley of the Nepryadva River, in the north-eastern part of the Middle-Russian Upland. The results of the botanical composition of peat deposits showed that the genesis of mires is represented by eutrophic paleocenoses, which accumulated carbon at a rate of 21.8-95 g/m2 per year. The formed eutrophic peat was characterized by a high degree of decomposition (45-55%) and a low rate of vertical growth (on average, 0.3-0.6 mm/year), which is due to the seasonal dynamics of the level of occurrence of mire waters. The carbon content in peat by peat deposit profiles is 14% for the Podkosmovo mire and 31% for the Bolsheberezovskoye mire. The differences are due to the peculiarities of the water-mineral nutrition of the mires, which is manifested in the high content of carbonates and ash content of the Podkosmovo mire. Carbon reserves in peat soils of inundated mires vary from 51.5 up to 125 kg/m2 for horizons with a capacity of 10 cm. This indicator is determined by the intensity of decomposition of plant residues, which depends on the composition and structure of microbial complexes. On the Bolsheberezovskoye mire the microbial complex is dominated by the fungal component, on the Podkosmovo mire – by the bacterial component. This is the reason for the differences in the microbial biomass of the mires: 222 g/ m2 for the Podkosmovo, 898 g/m2 for the Bolsheberezovskoye mire. The reason for the differences in inundated mires is the range of variation in the level of mire waters during the growing season, due to the reclamation measures carried out in the Bolsheberezovskoye mire. Nevertheless, inundated mires are important “depots” of atmospheric carbon and the intensity of its accumulation is determined by a complex of factors.

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Carbon Accumulation in Peat Soils of Floodplain Mires of the North-East of the Middle-Russian Upland

Volkova,

Leonova,

Golovchenko

2024

Počvovedenie

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Zooplankton of Pronskoye reservoir in August 2023

Tyulin,

Nikitenko,

Goryachev

et al. 2024

Fish Breeding and Fisheries

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The aim of this study was to investigate the zooplankton of Pronskoye Reservoir during the summer period of 2023. Sampling and processing of hydrobiological zooplankton samples were carried out using standard methods in August 2023 at six monitoring stations in Pronskoye Reservoir. A total of 15 zooplankton taxa were identified in the samples: 6 taxa of rotifers, 5 taxa of cladocerans, and 4 taxa of copepods. On average, the abundance and biomass of zooplankton (mean values across stations) in Pronskoye Reservoir in August 2023 were 928.1 thousand individuals/m3 and 3.4 g/m3, respectively. Rotifers dominated in terms of abundance (63,5%), while cladocerans dominated in terms of biomass (40,3%). Pronskoye Reservoir exhibited above-average productivity in terms of zooplankton, which is favorable from a fisheries perspective. The abundance and biomass of zooplankton for all major groups (rotifers, cladocerans, and copepods) were higher in the lower part of the reservoir, separated from the middle and upper parts by a narrow neck. The increase in the abundance of the rotifer species Brachionus angularis was particularly noticeable in the lower part of the reservoir. The lower part of the water body is classified as highly productive, while the middle and upper parts has above-average productivity. The lower part of the reservoir is characterized by lower temperatures and lower dissolved oxygen concentrations in the water. The lower part of Pronskoye Reservoir exhibits a more diverse species composition compared to the middle and upper parts. It is evident that abiotic factors, in one way or another, determine the differences in the abundance, biomass, and species composition of zooplankton between the lower and upper parts of Pronskoye Reservoir.

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Comparative Evaluation of Hydrologic-Hydrochemical State of the Water Reservoirs in the Novomoskovsk Area of the Tula Region in Autumn

Cited by 2 publications

References 0 publications

Carbon Accumulation in Peat Soils of Floodplain Mires of the North-East of the Middle-Russian Upland

Carbon Accumulation in Peat Soils of Floodplain Mires of the North-East of the Middle-Russian Upland

Zooplankton of Pronskoye reservoir in August 2023

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