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Home ї Archive of journals ї Volume 13, No. 2, 2023 ї Results of fishery monitoring in the lower reaches of the Northern Dvina River and their application in assessing the negative impact on aquatic biological resources

RESULTS OF FISHERY MONITORING IN THE LOWER REACHES OF THE NORTHERN DVINA RIVER AND THEIR APPLICATION IN ASSESSING THE NEGATIVE IMPACT ON AQUATIC BIOLOGICAL RESOURCES

JOURNAL: Volume 13, No. 2, 2023, p. 248-256

HEADING: Ecology

AUTHORS: Tortsev, A.M., Studenov, I.I.

ORGANIZATIONS: North Branch of Knipovich Polar Research Institute of Marine Fisheries and Oceanography, N. Laverov Federal Center for Integrated Arctic Research

DOI: 10.25283/2223-4594-2023-2-248-256

UDC: 574.5:502.3

The article was received on: 30.10.2022

Keywords: zooplankton, Northern Dvina River, fishery monitoring, phytoplankton, negative impact assessment

Bibliographic description: Tortsev, A.M., Studenov, I.I. Results of fishery monitoring in the lower reaches of the Northern Dvina River and their application in assessing the negative impact on aquatic biological resources. Arktika: ekologiya i ekonomika. [Arctic: Ecology and Economy], 2023, vol. 13, no. 2, pp. 248-256. DOI: 10.25283/2223-4594-2023-2-248-256. (In Russian).


Abstract:

One of the measures for the conservation of water biological resources is the conduct of environmental monitoring. Presentation and analysis of the results of environmental monitoring of the water ecosystem in the lower reaches of the Northern Dvina River and the practical use of the data is the aim of the research. The researchers have identified that the average value of the biomass of phytoplankton and zooplankton during the freeze-up period is almost 5 times lower than in the summer period. The production coefficient of conversion of the biomass of water food organisms into their products in the climatic conditions of the Arctic is zero for half a year. This is due to the presence of ice cover, reduced daylight hours and low water temperatures. Data from scientific publications, which show the results of research only for the growing season, cannot be used to assess harm. This leads to an incorrect assessment of the negative impact and increases the costs of enterprises. Environmental monitoring is a source of representative data about the actual magnitude of the impact on the aquatic ecosystem. The costs of economic entities for environmental monitoring are significantly lower than the cost of compensation for damage to aquatic biological resources based on incorrect data. The availability of data on the background state of the aquatic ecosystem will make it possible to make a correct assessment of the negative impact on the components of the environment in the event of various kinds of man-made accidents.


Finance info: We express our gratitude to the staff of the Laboratory of Bioresources of Inland Waters of the Northern Branch of Russian Federal Research Institute of Fisheries and Oceanography and Arkhangelsk Pulp & Paper Mill for their help in conducting the research.

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DOI 10.25283/2223-4594