Проблема интегральной оценки токсического влияния на фотосинтетические организмы в водных экосистемах
The article presents a methodical approach to the integral assessment of the toxic effect of various toxicants on photosensitive organisms. The toxic compounds, affecting aquatic organisms in general and the process of photosynthesis of proteins in particular, are characterized. Calculation of the new index WESI is based on the idea of residual concentrations of nitrogen and phosphorus nutrients in case of suppression of the photosynthetic process by toxic elements, namely, the activity of chlorophyll. Calculation of the index WESI is carried out using a simple formula based on the results of classification to the rank of concentrations of nitrate nitrogen or phosphates and saprobity indices S. A model for conducting an ecological classification from the ecosystem perspective for the purpose of calculating the index WESI is shown. Classification tables are presented for 9 ranks graded from the ecological point of view. A description of the ecosystem status index WESI that has been developed, a detailed procedure for its calculation, and examples of its application to various water bodies of Eurasia are given. The way of application of the index WESI in monitoring and environmental mapping is shown, as well as the criteria for its change for the decision-making system when assessing the state of a water body and for preserving the diversity of aquatic organisms under conditions of toxic effects on primary producers.
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| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
2018
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| Subjects: | Toxicology, Aquatic organisms, Mapping, Ecosystem management, Photosynthesis, Primary producers, Nitrates, Phosphates, Chlorophyll, |
| Online Access: | http://hdl.handle.net/1834/14186 |
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