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Contemporary Problems of Ecology

2008 year, number 3

Microbiological Indication of River Ecosystem Conditions at the Oil Fields in the Middle Ob Area

E. A. Shornikova
Pages: 417–425


The results of river water monitoring at the licensed oil field areas in the Middle Ob area are presented. The complex estimation of the river water ecological conditions is made using microbiological indication and biotesting. The number of heterotrophic saprophytic bacteria in the majority of rivers correspond to the satisfactory water quality. The faecal pollution indicators were detected in most rivers. The self-purification potential of the major part of streams was low. The Gram-positive coccus bacterial forms were dominant in microbial cenosis in the majority of rivers. Seven toxic samples were detected using the biotesting.