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Influence of Temperature and Water Level on the Phytoplankton in the Estuarine Zone of the Rybinsk Reservoir Tributary

  • PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON
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Abstract

The structural parameters of phytoplankton in the estuarine region of a small tributary (Ild River) were studied in 2009–2011 and compared with the adjacent sections of the free-flowing section of the river and the pelagic zone of the Rybinsk Reservoir. Phytoplankton of the mouth estuarine region of the Ild River is characterized by high floristic and specific richness, biomass and coenotic diversity. With an increase in water temperature and a decrease in the water level in the reservoir, an increase in floristic richness, biomass, and the degree of similarity of the ratio of large taxonomic groups of algal communities of ecotone and border zones were observed in the mouth area of the tributary.

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ACKNOWLEDGMENTS

We are grateful to Institute for Biology of Inland Waters, Russian Academy of Sciences, staff members A.V. Krylov, S.E. Bolotov, and A.I. Tsvetkov for organizing studies in the Il’d River mouth section; to the crew of the expedition fleet and T.P. Zaykina for assistance in sampling in the Rybinsk Reservoir pelagial; and to E.S. Gusev for help in identifying g. Synura species under a scanning electron microscope.

Funding

The study was carried out as part of State Task no. АААА-А18-118012690096-1.

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Authors and Affiliations

  1. Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Nekouzskii raion, Yaroslavl oblast, Russia

    E. G. Sakharova & L. G. Korneva

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  1. E. G. Sakharova
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  2. L. G. Korneva
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Correspondence to E. G. Sakharova.

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The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.

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Sakharova, E.G., Korneva, L.G. Influence of Temperature and Water Level on the Phytoplankton in the Estuarine Zone of the Rybinsk Reservoir Tributary. Inland Water Biol 12 (Suppl 2), 25–32 (2019). https://doi.org/10.1134/S1995082919060117

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