Zoobenthos of Lake Pyasino and the Rivers Flowing into It after the Diesel Spill of 2020 : научное издание


Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1134/S1995425521040077

Ключевые слова: zoobenthos, species composition, abundance, biomass, production, fish productivity, oil spills, water quality

Аннотация: The species composition and quantitative characteristics of the zoobenthos in Lake Pyasino and rivers flowing into it after a diesel spill have been analyzed. The production of zoobenthos and potential production of benthivorous fish in Lake Pyasino have been calculated. A small number of zoobenthos species and low values of abundaПоказать полностьюnce and biomass are revealed. In the Bezymyanny Stream, the mouth of the Daldykan River, and the Ambarnaya River, oligochaetes Limnodrilus hoffmeisteri Claparede and Tubifex tubifex (O. F. Muller) dominate in the zoobenthos abundance and biomass. In Lake Pyasino and the Pyasina River outflow, larvae of caddis flies, chironomids, stoneflies, and amphipods prevail. In the area of the deepwater silted station of Lake Pyasino, oligochaetes L.hoffmeisteri develop, the proportion of which in the benthic fauna at this station (40 and 79% of the total biomass and abundance, respectively) is maximal. The amphipod Monoporeia affinis (Lindstrom) dominates in terms of biomass at this station. A decrease in the chironomid diversity, an increase in the proportion of polysaprobic oligochaetes, and lower values of the Shannon index in Lake Pyasino in 2020 when compared to 1992 are found. The low abundance (2181 +/- 2048 ind./m(2)) and biomass (2.01 +/- 1.85 g/m(2)) of zoobenthos in the lake results in low values of zoobenthos production and the potential production of benthivorous fish (3 kg/ha per season). Based on the state of zoobenthos, an improvement in water quality has been observed from river sections exposed to the oil spill to the lake and the source of the River Pyasina.

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Выпуск журнала: Vol. 14, Is. 4

Номера страниц: 391-398

ISSN журнала: 19954255

Место издания: NEW YORK



  • Shulepina S.P. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Dubovskaya O.P. (Siberian Fed Univ, Krasnoyarsk 660041, Russia; Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys,Fed Res Ctr, Krasnoyarsk 660036, Russia)
  • Glushchenko L.A. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)

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