Vertical distribution of biogenic elements in Gelendzhik area in 2019

Investigation of the vertical distribution of nutrients is an important component in studying the entire ecosystem of the Black Sea. Biogenic elements play a crucial role in the primary production in the sea coastal zone and are among the main indicators of the ecological state of marine waters. Any changes in nutrient regime are reflected in biological marine plankton communities. This work was aimed at the investigation of the seasonal vertical dynamics of biogenic elements in the northeastern part of the Black Sea near the city of Gelendzhik in 2019. To determine concentration of nutrients, the methods standard to the practice of marine hydrochemical studies have been used. As a result of this investigation, it has been found that nitrate and ammonium forms of nitrogen, and mineral phosphorus have well-defined concentration maxima that correspond to certain values of conditional density. There is one deep maximum in the vertical distribution of nitrates; on average, the concentration of nitrate nitrogen is 5.57 μmol/L. Vertical profile of phosphates has an upper maximum (average concentration of 1.39 μmol/L), a minimum (1.19 μmol/L) and a lower maximum (6.64 μmol/L) of concentrations. Seasonal changes in climatic conditions, coastal runoff and rate of phytoplankton consumption determine the dynamics of nutrient concentrations in the photic layer of marine waters.

Bibliographic Details

Main Authors:	Borodulina, P.A., Chasovnikov, V.K., Fedorov, A.V.
Format:	Journal Contribution biblioteca
Language:	Russian
Published:	2022
Subjects:	Nitrate nitrogen, Nitrite nitrogen, Ammonium nitrogen, Silicon, Mineral phosphorus, Plankton, Aquatic communities, Primary production, НИС «Ашамба», R/V Ashamba, Seasonal variations, Сезонные изменения, Вертикальное распределение, Первичная продукция, Водные сообщества, Кремний, Нитратный азот, Нитритный азот, ASFA_2015::B::Biogenic material, ASFA_2015::V::Vertical distribution, ASFA_2015::N::Nitrogen compounds,
Online Access:	http://hdl.handle.net/1834/41946
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