Kuchko Y., Kuchko T. Dynamics of zooplankton community of Lake Tarasmozero in long-term anthropogenic pollution // Principy èkologii. 2014. № 3. P. 28‒39. DOI: 10.15393/j1.art.2014.3501

Issue № 3

Original research


Dynamics of zooplankton community of Lake Tarasmozero in long-term anthropogenic pollution

   Yaroslav Alexandrovich
Ph.D., Institute of Biology, Karelian Research Centre, Russian Academy of Sciences, y-kuchko@mail.ru
   Tamara Yuryevna
Ph.D, Petr SU, kuchko@drevlanka.ru
zooplankton community
aquatic ecosystem
species composition
Summary: In the article the results of zooplankton studies in Lake Tarasmozero (Lizhma river basin) are presented. Wastes from the trout-breeding complex "Kedrozero" have been collected in this pond since 1992. The obtained data showed that from 1989 to 2012 a number of changes in zooplankton community take place and it is the evidence of the gradual increase in the trophic status of the reservoir. The average biomass of zooplankton increased from 500 to 1000 mg/m3. According to the trophic index (Myaemets, 1979), Tarasmozero is replaced into the category of mesotrophic water reservoirs (0.5 - 1.0). Saprobity index raised from 0.95 to 1.42. In the composition of the zooplankton there noted such species, as Polyarthra luminosa, Filinia longiseta, Trichocerca insignis, Daphnia longispina, Cyclops kolensis, which serve as indicators of increased trophic level in the conditions of moderate latitudes. After the trout farm started off, Bcrus/Brot indicator considerably decreased indicating to increasing role of rotifers in the formation of the total biomass of the zooplankton. Currently, the dominant species include D. longispina, Bosmina longirostris, Mesocyclops leuckarti, Asplanchna priodonta. In spite of the fact that the current changes are not catastrophic, it is reasonable to monitor regularly the initial links of the trophic chain of the reservoir ecosystem

© Petrozavodsk State University

Reviewer: A. Zubchenko
Reviewer: N. M. Kalinkina
Received on: 08 December 2014
Published on: 25 December 2014


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