Abstract
In this report, temporal and spatial variabilities in the biochemical and biological sectors of the Black Sea are reviewed, based on the long-term chemical and biological data collected by the Black Sea riparian countries and USA. Past and present biochemical data, starting from R/V J. Elliott Pillsbury August-1965 cruıse till R/V Bilim July-1997 cruise, were compared in terms of density dependent profiles for the dynamically different regions of the Black Sea. Observed changes in the ecosystem of the Black Sea during recent decades are reviewed in conjunction with the alterations and modifications in the wide range of environmental controls. Recent physical and biochemical measurements such as nutrients, dissolved oxygen, hydrogen sulfide have also been evaluated for describing the possible routes and mechanisms of transport of coastally trapped pollutants into the offshore, deep-basin waters through meandering rim current system, and the redox mechanisms controlling the sub-oxic zone located between oxic and anoxic layers.
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Baştürk, Ö., Yakushev, E., Tuğrul, S., Salihoğlu, İ. (1999). Characteristic Chemical Features and Biogeochemical Cycles in the Black Sea. In: Beşiktepe, S.T., Ünlüata, Ü., Bologa, A.S. (eds) Environmental Degradation of the Black Sea: Challenges and Remedies. NATO Science Series, vol 56. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4568-8_4
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