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Structural and trophic characteristics of protozoan plankton in a subarctic Lake (Northern Karelia)

  • Zooplankton, Zoobenthos, and Zooperiphyton
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Abstract

The seasonal dynamics of ciliate abundance has been studied in Lake Krivoye (the White Sea coast). A high species diversity of ciliates and their maximal biomass in the plankton are observed in the early spring in spite of low water temperatures (5–7°C). In spring, infusoria comprise 90% of the zooplankton biomass; i.e., infusoria as primary consumers are the main consumers of algal and microzooplankton production and the major carriers of energy to the next trophic level. During this period, a significant portion of planktonic infusoria biomass is constituted by the species containing zoochlorella. The high biomass of symbiotic algae (25% of the total biomass of planktonic algae) in a spring cilioplankton testifies to the important role that algosymbionts play in the primary production in some parts of the year.

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Correspondence to T. V. Khlebovich.

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Original Russian Text © T.V. Khlebovich, 2010, published in Biologiya Vnutrennikh Vod, No. 3, 2010, pp. 59–65.

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Khlebovich, T.V. Structural and trophic characteristics of protozoan plankton in a subarctic Lake (Northern Karelia). Inland Water Biol 3, 260–265 (2010). https://doi.org/10.1134/S1995082910030090

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