Atmospheric Contribution To Eutrophication Of
The Adriatic Sea
Author(s)
V. Djuricic, C. Kosanovic & J. Skevin-Sovic
Abstract
Eutrophication is an important problem, especially in semi-enclosed sea like the
Adriatic Sea, a part of the Mediterranean Sea. A series of undesirable events
occured in the Adriatic Sea in the past decades: invasions of jellyfish and other
species, hypertrophic formations of mucilagenous aggregates, an increased
frequency of toxic dynoflagellate appearance. It has been discussed that the
atmospheric input of pollutants to the Mediterranean Sea is of the same order of
magnitude as the riverine input for many species. It is also well known that
precipitation is a very efficient scavenger of pollutants. The purpose of this paper
is to evaluate the contribution of atmospheric pollution to the eutrophication of
the Adriatic. For that purpose, inorganic nitrogen atmospheric input considered
as wet deposition of NO3
--N and NH4
+-N ions was investigated. Nitrate and
ammonium concentrations in daily precipitation samples at three stations (two
coastal and one on the island), for the 2001−2010 period were analysed. The
Adriatic coast is under the combined influence of local, regional and longdistance
pollution sources. Yearly wet deposition of 1−2 g N/m2 significantly
contribute to ecological imbalance and eutrophication. The Adriatic is
ecologically very sensitive, because of its geographic position, complex
orography, specific meteorological conditions and number of pollution sources.
Predominant airflow is from the land to the sea. The precipitation amount is high
in the area of the highest air pollution, which results in high wet deposition.
Keywords: eutrophication, Croatian Adriatic coast, inorganic nitrogen wet
deposition.
Keywords
eutrophication, Croatian Adriatic coast, inorganic nitrogen wet
deposition.
Related Book
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