Author(s)

I. Marasovic & Z. Nincevic

Abstract

The results of a long-term study (15 years) are used in this paper. The study included monitoring of the coastal waters from Zadar to Dubrovnik (middle Adriatic) with identification of the eutrophication level in this area. A parallel monitoring program of the open sea water was also done. These results were compared and used to differentiate between those changes brought about trough natural fluctuations or trough anthropogenous factors. This study deals only with the summer period, during which the sampling was most regular, with added emphasis on the surface layer-where the metabolic activity is highest. With higher summer sewage waste input and the presence of a thermocline, or picnocline, the surface layer is most affected by coastal fa

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