Y.R. Shtykova, V.V. Drucker, E.G. Sorokovikova, N.A. Zhuchenko, E.A. Zimens, O.I. Belykh
Limnological Institute SB RAS, 3, Ulan-Batorskaya St., Irkutsk, Russian Federation
UDC 579.68:579.63:581.526.325.2 (282.256.341)
Sanitary-microbiological conditions and concentrations of microcystins were assessed in surface waters of bays with intensive recreational loads in the water area of the Maloe More of Lake Baikal in August 2016. It was established that the water quality in Bazarnaya Bay did not meet the requirements of the RF regulations. High values of enterococci were detected in Mukhor and Kurkut bays, which attested to unfavorable sanitary-microbiological conditions in these areas. The concentration of microcystins in plankton was from 0.11 to 6.2 μg/g dry weight, averaging 1.32 μg/g dry weight. The maximum concentration of microcystins was recorded in the water area of Mukhor Bay and the minimum in Bazarnaya Bay.
Keywords: Lake Baikal, sanitary-indicative microorganisms, enterococci, coliform bacteria, cyanobacteria, microcystins.
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