Nutrient dynamics along the Moskva River under heavy pollution and limited self-purification capacity
| Autor: | O. Erina, Lyudmila Efimova, Nikolay Kasimov, D. Sokolov, M. Tereshina |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Pollution
Hydrology lcsh:GE1-350 geography River ecosystem geography.geographical_feature_category business.industry media_common.quotation_subject 0208 environmental biotechnology Sewage 02 engineering and technology Main river 010501 environmental sciences 01 natural sciences 020801 environmental engineering Nutrient Nutrient pollution Tributary Environmental science business Eutrophication lcsh:Environmental sciences 0105 earth and related environmental sciences media_common |
| Zdroj: | E3S Web of Conferences, Vol 163, p 05014 (2020) |
| ISSN: | 2267-1242 |
| Popis: | An extensive study conducted during the dry summer of 2019 provided a detailed picture of the nutrient content dynamics along the Moskva River. Water sampling at 38 locations on the main river and at 17 of its tributaries revealed a manifold increase in phosphorus and nitrogen concentrations as the river crosses the Moscow metropolitan area, which can be attributed to both direct discharge of poorly treated sewage and nonpoint urban pollution. Even at the Moskva River lower reaches, where the anthropogenic pressure on the river and its tributaries is less pronounced, the inorganic nitrogen and phosphorus content remains consistently high and exceeds the environmental guidelines by up to almost 10 times. This indicates increased vulnerability of the Moskva River ecosystem during periods of low flow, which can be a major factor of eutrophication in the entire Moskva-Oka-Volga system. Comparison of our data with some archive records shows no significant improve in the nutrient pollution of the river since the 1990s, which raises further concern about the effectiveness of water quality management in Moscow urban region. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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