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Abstract <p>The pelagic zooplankton of Lake Teletskoye and its vertical distribution at stations of various depths have been studied. The taxonomic composition includes 20 species: Rotifera (13), Copepoda (4), and Cladocera (3). The abundance in the column of water was significantly higher at shallower stations and varied from 93 200 to 19 700 individuals/m<sup>3</sup> in different years of observation, while at the deepest station it did not exceed 1000 individuals/m<sup>3</sup>. In regards to species composition and density of zooplankton, the lake is oligotrophic. The maximum density at stations with thermal stratification of the water column was recorded in the upper 5-m water layer (13 000–33 000 individuals/m<sup>3</sup>), with a gradual decrease to the deep layers by three orders of magnitude and probably partially consisting of dead animals from the overlying water layers.</p>

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Zooplankton and Its Vertical Structure in Pelagic Lake Teletskoye

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • V. V. Vezhnavets,
  • M. D. Zhurauliou,
  • N. I. Yermolaeva,
  • O. S. Burmistrova,
  • E. Y. Zarubina

摘要

Abstract

The pelagic zooplankton of Lake Teletskoye and its vertical distribution at stations of various depths have been studied. The taxonomic composition includes 20 species: Rotifera (13), Copepoda (4), and Cladocera (3). The abundance in the column of water was significantly higher at shallower stations and varied from 93 200 to 19 700 individuals/m3 in different years of observation, while at the deepest station it did not exceed 1000 individuals/m3. In regards to species composition and density of zooplankton, the lake is oligotrophic. The maximum density at stations with thermal stratification of the water column was recorded in the upper 5-m water layer (13 000–33 000 individuals/m3), with a gradual decrease to the deep layers by three orders of magnitude and probably partially consisting of dead animals from the overlying water layers.