The Use of Biotic Indices and Metrics in the Evaluation of Water Quality on the Territory of the Ergaki Nature Park (the South of Krasnoyarsk Krai)
A. V. ANDRIANOVA
Institute of Computationаl Modeling SB RAS, 660036, Krasnoyarsk, Akademgorodok, 50
Keywords: small streams, the Ergaki nature park, macrozoobenthos, lithoreophilous community, bioindication, water quality, biotic indices
Abstract
The species composition, spatial distribution and structure coefficients of benthic communities in small mountain streams on the territory of the Ergaki nature park (the south of the Krasnoyarsk Krai) were characterized. The comparative analysis of biotic indices and metrics, some of which are used by the European Water Framework Directive to evaluate water quality, was carried out. It was determined that the
EPT,
BMWP and
IBGN indices had greater sensitivity, therefore they could be recommended as the standard in the evaluation of water quality of small mountain streams of that region. The gradation of water quality was determined and the integrated index was introduced after the ranking of obtained biotic indices and metrics in comparison to the background value.
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