Suppression of Cyanobacterial Blooms by Zooplankton: Experiments in Natural Water Bodies with the Use of Flow-Through Ecosystems
- Authors: Gerasimova T.N.1, Pogozhev P.I.1, Sadchikov A.P.2
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Affiliations:
- Water Problems Institute
- International Research Centre for Biochemical Technology
- Issue: Vol 89, No 13 (2019)
- Pages: 2840-2844
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/223290
- DOI: https://doi.org/10.1134/S1070363219130164
- ID: 223290
Cite item
Abstract
—In a pond, the trophic press of fish suppresses the development of large-size filter-feeders (Daphnia longispina and Simocephalus vetulus). Large-size cladoceran species are replaced by smaller species. The Micro-cystis aeruginosa blooms and the trophic press of fish are accompanied by a loss of the species diversity of filter-ing zooplankton and by a drop in its biomass to minimal levels. Flow-through experimental ecosystems separate zooplankton-consuming fish, thereby causing abrupt increases in zooplankton abundance and biomass. Water flow in the experimental ecosystem destroys cyanobacterial colonies and increases the proportion of their fractions with a size making them edible. This favors increases in zooplankton abundance, size, and fertility.
About the authors
T. N. Gerasimova
Water Problems Institute
Author for correspondence.
Email: gerasiming@gmail.com
Russian Federation, Moscow, 119333
P. I. Pogozhev
Water Problems Institute
Email: aquaecotox@yandex.ru
Russian Federation, Moscow, 119333
A. P. Sadchikov
International Research Centre for Biochemical Technology
Author for correspondence.
Email: aquaecotox@yandex.ru
Russian Federation, Moscow, 119992