Estimation of atmospheric input role for the Black Sea waters from Nitrogen balance perspective
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2014-01
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Анотація
Three main nutrient pollution sources, such as coastal, riverine and atmospheric, are known for the Black Sea ecosystem. Nitrogen (N) contamination plays most important role for
ecosystem, since N is crucial element for any organism metabolism. It is known N excess
could effect on water quality, ecosystem and biodiversity, leading to acidification,
eutrophication and even hypoxia. It was shown that coastal zones of the Black Sea consider as
a sink of N for open sea waters, where growth of phytoplankton is limited by N availability.
Periodically eutrophication events occur on huge area of Black Sea, which associated with N
load, but source and detailed scheme has not identified yet. The aim of this work is to develop
balance scheme of N in the Black Sea ecosystem, determine and quantitatively assess the role
of main N pollution sources with the description of contributor chemical forms, estimate main
threats, propose the mitigation procedures.
The peculiarities of Black Sea ecosystem has been considered to find special aspects of
nutrients distribution and consumption. Assessments of atmospheric, riverine and coastal
inputs have been performed. A dominant contribution of atmospheric input for open sea areas
has been challenged and the main constituents have been characterized. Aerosol removing by
dry deposition from atmosphere has been shown as a prevailing way for the Black sea open
waters. Significant meaning of atmospheric organic pollutants, which are usually neglected,
has been demonstrated and discussed. Relationships of eutrophication associated events with
excessive atmospheric N loads episodes have been considered. Basic directions for mitigation
of N harmful effect on the Black Sea ecosystem have been proposed.
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Nutrients, nitrogen compounds, atmospheric input, eutrophication
Бібліографічний опис
In: Abstract Book of the PERSEUS Scientific Workshop, (27-30 January, 2014, Athens, Greece). – Athens, 2014. – P. 57.