Structural and functional characteristics of zooplankton communities in thermokarst lakes of Samoylov Island (Lena River delta, Republic of Sakha (Yakutia))

L.A. Frolova*, G.R. Nigamatzyanova**

Kazan Federal University, Kazan, 420008 Russia

E-mail: *larissa.frolova@kpfu.ru, **Gulnaraniga@mail.ru

Received June 7, 2017


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DOI: 10.26907/2542-064X.2019.1.158-171

For citation: Frolova L.A., Nigamatzyanova G.R. Structural and functional characteristics of zooplankton communities in thermokarst lakes of Samoylov Island (Lena River delta, Republic of Sakha (Yakutia)). Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki, 2019, vol. 161, no. 1, pp. 158–171. doi: 10.26907/2542-064X.2019.1.158-171. (In Russian)

Abstract

The structural and functional characteristics of zooplankton communities of two thermokarst lakes on Samoylov Island (Lena River delta, Yakutia) have been studied. A total of 76 taxa of hydrobionts have been found in the zooplankton community of the studied lakes. The taxonomic lists of the spring-summer zooplankton compositions have been provided. The complex of species determining the community structure has been defined. Rotifers determined the species diversity and zooplankton abundance in the lakes. The biomass values were defined by large copepods. Cold-water-dwelling northern species made the greatest contribution to the quantitative indicators of zooplankton. The seasonal dynamics of quantitative indicators of zooplankton has been analyzed. The current state of the lakes has been assessed using the saprobity index and species diversity.

Keywords: zooplankton, hydrobiology, species diversity, thermokarst lakes, Lena River delta

Acknowledgments. We are grateful to the staff members of the Arctic and Antarctic Research Institute (St. Petersburg), Scientific Research Station “Samoylov Island” (Siberian Branch, Russian Academy of Sciences, Novosibirsk), and Lena Delta Nature Reserve for their invaluable help during the field work.

The field work was supported by the Russian Foundation for Basic Research (project no. 18-05-00406, 18-05-60291) and performed according to the Russian Government Program of Competitive Growth of Kazan Federal University. Laboratory processing and analysis of the material were funded by the Russian Science Foundation (project no. 16-17-10118).


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