Assessment of Volkhov river ecological state on hydrobiological and hydrochemical indexes

On the basis of research the hydrochemical composition, characteristics of phytoplankton and zooplankton communities, received in autumn 2013, the assessment of ecological state of Volkhov river is given. The rather homogeneous hydrochemical composition of water and low content of pollution substances along the all waterflow is determined. The quantitative indexes, dominant species, structure, saprobic indexes of phytoplankton and zooplankton allow to consider the waters in Volkhov river as “pure” (second class of water quality). The conclusion about the low anthropogenic impact on river waters and stable satisfactory ecological state of Volkhov river in autumn period is made.