AN ASSESMENT OF THE CONDITION OF THE WATER OF LAKE ONEGO INFLOWING STREAMS UNDER HUMAN IMPACT INFLUENCE USING MICROBIOLOGICAL AND TOXICOLOGICAL PARAMETERS

• Main Authors: Elena Tekanova, Elena Makarova, Natalia Kalinkina
• Format: Article
• Language: English
• Published: Karelian Research Centre of the Russian Academy of Sciences 2015-10-01
• Series: Transactions of the Karelian Research Centre of the Russian Academy of Sciences
• Subjects: small rivers; water pollution; bacterioplankton; ecotrophic groups; bioindication; bioassay; organic matter; sanitary condition; recreation
• Online Access: http://journals.krc.karelia.ru/index.php/limnology/article/view/35
• ISSN: 1997-3217; 2312-4504

<p>The quantitative growth and spatial dynamics of major ecotrophic groups of heterotrophic bacterioplankton in rivers Lososinka and Neglinka in Petrozavodsk(oligocarbophilic, saprophytic, phenol-resistant, hydrocarbon oxidizing, and total coliform) are shown. The effect of the hydrometeorological factor on the investigated groups of bacterioplankton was considered. Water pollution by labile organic matter, including fecal organic matter and oil products was indicated by the level of development of indicator groups of heterotrophic bacteria. The river water was classified into the β-, α-mesosaprobic class with signs of pollution and eutrophication in the studied period. The abundance of potentially pathogenic microorganisms in the water of these urban rivers excluded the possibility of their recreational use. The bioassay showed that water in the urban rivers had no toxic effect on standard test objects – the crustacean <em>Ceriodaphnia affinis</em>.</p>