Hydrobiological parameters of tributaries of the Vychegda River basin in different units of landscape division

Baturina, M. A.; Kononova, O. A.; Elsakov, Vladimir

doi:10.15393/j1.art.2020.9982

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…В 20 веке исследования проводились эпизодически [Кордэ, 1959[Кордэ, (Korda, 1959; Зверева, 1969Зверева, (Zvereva, 1969] и носили разрозненный характер. В 2003-2005 г. сотрудниками [Батурина, 2017[Батурина, (Baturina, 2017] Института биологии Коми Научного центра УрО РАН были проведены масштабные работы по изучению зоопланктона среднего течения р. Вычегда, продолжившиеся в 2006-2015 г. Тем не менее, планктонные организмы в нижнем течении р. Вычегда изучены крайне слабо [Кононова, 2009[Кононова, (Kononova, 2009; Батурина, 2020 (Baturina, 2020)].…”

Section: Introductionunclassified

Current State of Plankton Communities of the Lower Vychegda River and Its Tributaries

Medvedeva¹,

Otchenash²,

Makedonskaya³

2022

Transactions of Papanin Institute for Biology of Inland Waters RAS

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The work is a part of the comprehensive studies of the rivers and lakes of the south-east of the Arkhangelsk region, carried out in 2021 for the purpose of development of aquaculture of inland water bodies. The data on the species diversity and structure of plankton communities of freshwater bodies belonging to the Vychegda River watershed were obtained. Taxonomic composition of phytoplankton in summer period of 2021 was shown. Species diversity was estimated using Shannon index based on relative abundance of species, Menchinic index to determine species abundance, and Jaccard's similarity coefficient. Pantle-Bucca saprobicity index was calculated to assess pollution of natural waters. Evaluation of watercourses trophicity based on the obtained indicators of phytoplankton and zooplankton was carried out. We have identified 192 taxa of microalgae from 8 divisions and 15 species of zooplankton from three systematic groups. Green and diatom algae were found to be the basis of the algoflora. The zooplankton community was cladoceric-copepodic. New data on the state of the phytoplankton community can serve as an informational and methodological basis for the development of ecological monitoring programs for the aquatic ecosystems of the region. The results of the research can be used to assess the fish productivity of the Arkhangelsk region water bodies and to calculate the damage to aquatic bioresources from economic activities.

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Section: Introductionunclassified

Current State of Plankton Communities of the Lower Vychegda River and Its Tributaries

Medvedeva¹,

Otchenash²,

Makedonskaya³

2022

Transactions of Papanin Institute for Biology of Inland Waters RAS

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State of the Benthic Communities of the Vychegda River under the Influence of Treated Wastewater from the Pulp and Paper Industry

Baturina

Fefilova

Loskutova

2021

Contemp. Probl. Ecol.

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Assessment of Trout Naturalization in Water Bodies in North-Eastern European Russia (Case of Vychegda River Tributaries)

Zakharov

Boznak

2021

Vestnik of Astrakhan State Technical University. Series: Fishing Industry

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The article highlights the ichthyological studies carried out in the Sysola river basin (a second order tributary of the Severnaya Dvina river), where rainbow trout is reared in cages for commercial purposes in the waters of regulated tributaries. The forecast for trout naturalization seems to be poor due to the fact that trout of different ages enter the river system every year as a result of technological accidents. It has been found that, despite the numerous cases of trout occurring in the natural conditions during 40 years, in the basin of the Sysola river has not formed a self-reproducing population of rainbow trout, and cases of its by-catch are rare. The data on the climatic and ecological conditions of the region are given. It has been inferred that the main factors preventing the naturalization of trout in the water bodies of the region are unfavorable temperature and hydrological regimes during the spawning and early ontogenesis of fish. The short summer feeding period does not allow trout to prepare for successful long wintering, as evidenced by a sharp decrease in the growth rate of fish that have fallen into natural conditions, compared to fish grown in cages. Trout of cage origin obviously do not form stable groups capable of reproducing the species and do not pose a threat to the aboriginal fish population, including Atlantic salmon, whose spawning and a significant part of the life cycle take place on many rivers of the north-eastern European Russia, including the basins of the Severnaya Dvina and Pechora rivers

show abstract

Hydrobiological parameters of tributaries of the Vychegda River basin in different units of landscape division

Cited by 3 publications

References 1 publication

Current State of Plankton Communities of the Lower Vychegda River and Its Tributaries

Current State of Plankton Communities of the Lower Vychegda River and Its Tributaries

State of the Benthic Communities of the Vychegda River under the Influence of Treated Wastewater from the Pulp and Paper Industry

Assessment of Trout Naturalization in Water Bodies in North-Eastern European Russia (Case of Vychegda River Tributaries)

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