Quantification, normalization and regulation of multifactorial anthropogenic impacts on freshwater ecosystems
- 1 — G.V. Plekhanov Saint Petersburg Mining University
- 2 — G.V. Plekhanov Saint Petersburg Mining University
- 3 — G.V. Plekhanov Saint Petersburg Mining University
- 4 — G.V. Plekhanov Saint Petersburg Mining University
- 5 — G.V. Plekhanov Saint Petersburg Mining University
Abstract
Methods for quantitative study, assessment, rationing and selection of measures for regulation of multifactorial anthropogenic impacts on ecosystems of freshwater reservoirs and watercourses have been developed. Reaction of biota to influence is estimated by a condition of macrozoobenthos as the most sensitive bioindicator, and the influence itself is estimated by the special indicator taking into account effect of interaction of factors. The regulation of multifactorial impact is based on identifying its maximum permissible level, which does not cause irreversible changes in macrozoobenthos. Regulation of the impact is aimed at reducing it to the maximum permissible combinations of interacting factors to achieve a safe level of their joint biotic effect.