The Phase of High Transparency and the Chemistry of Pond Water
T. N. Gerasimovaa, *, and A. P. Sadchikovb, **
aInstitute of Water Problems, Russian Academy of Sciences, Moscow, 119333 Russia
bInternational Research Center for Biochemical Technology, Lomonosov Moscow State University, Moscow, 119992 Russia
email: *gerasiming@gmail.com
email: **aquaecotox@yandex.ru
Received 24 November, 2022
Abstract—
A phase of high water transparency was observed in a pond in mid-June and lasted for a week. In this period, the abundance of cyanobacteria and the amount of mineral phosphorus dropped to minimal values. Alga consumers dominated in the early June, including rotifer Conochilus unicornis and Cladocera Daphnia longispina. Zooplankton is an active filterer of algae, contributing to water clarification. The trophic press of plankton-eating fish leads to changes in zooplankton species composition.
Keywords:
cyanobacteria,
zooplankton,
crustaceans,
daphnia,
mineral phosphorus,
water transparency,
plankton-feeding fish
DOI: 10.1134/S1070363222130229