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Vol 155 No 2
Pages:
73-76
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RUS

System of quantitative analysis, assessment and rationing of combined technogenic impacts on water bodies

Authors:
T. A. Petrova
About authors
  • G.V. Plekhanov Saint Petersburg Mining University
Date submitted:
2002-07-14
Date accepted:
2002-08-10
Date published:
2003-02-01

Abstract

The system of assessment and rationing of multifactorial anthropogenic impacts on water bodies based on bioindication is proposed. Macrozoobenthos, as the most sensitive community, is used as a bioindicator. An original method of singling out the species having a real indicator value has been developed, informative quantitative characteristics of this community have been established. The conditions for maintaining community stability to the impact have been defined and formalized, a universal quantitative measure of combined impact has been given. The main regularities of community response to combined anthropogenic impacts were identified and described. Identified conditions of two typical catastrophes of communities in the gradient of combined impacts. Accordingly, the approach to rationing of anthropogenic impacts for hydro-ecosystems with varying degrees of background anthropogenic load is given.

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