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DOI: 10.15862/04RRO417 (https://doi.org/10.15862/04RRO417)

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Zhidkova A.Y., Gusakova N.V. Assessment of the internal nutrient load on the waters of the Gulf of Taganrog of the Sea of Azov from the position of the eutrophication. Russian journal of resources, conservation and recycling. 2017; 4(4). Available at: https://resources.today/PDF/04RRO417.pdf (in Russian). DOI: 10.15862/04RRO417

Assessment of the internal nutrient load on the waters of the Gulf of Taganrog of the Sea of Azov from the position of the eutrophication

Zhidkova Alena Yurievna
Don state technical university
Taganrog branch, Russia, Taganrog
E-mail: soleils@bk.ru

Gusakova Natalia Vladimirovna
Southern federal university, Russia, Rostov-on-Don
E-mail: gusakova@sfedu.ru

Abstract. The article assesses the internal nutrient load, namely nitrogen and phosphorus, on the waters of the Gulf of Taganrog of the Sea of Azov from the position of the eutrophication. The authors provide a detailed calculation of the internal phosphorus and nitrogen loads, based on the concepts of the formation mechanisms of the flow of substances from the bottom sediments as a concentration diffusion and convective transfer.

The increase in the eutrophication of the waters of the Gulf of Taganrog of the Sea of Azov leads to the increase in the flow of the organic matter to its bottom. This causes the intensification of the processes of the biochemical oxidation in the bottom sediments, the oxidation-reduction conditions change, and the content of the mobile forms of nitrogen and phosphorus increases, namely, their flow from the bottom sediments into the water increases. Thus, the eutrophic level of the reservoir is one of the main factors determining the internal load of reservoirs by nutrients.
The Gulf of Taganrog of the Sea of Azov was chosen as the object of the research as the water object, whose features are shallow water, good warm-up, weak salinity, lack of strong currents, and prevalence of the overtaking currents. As a result, the water area is the subject to active eutrophication, and the assessment of the internal nutrient loading is carried out by the authors for a deeper understanding of the processes of the water eutrophication.

Keywords: eutrophication; internal load; nitrogen; phosphorus; the Gulf og Taganrog; bottom sediments; nutrients

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