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Long-term changes of phosphorus and nitrogen compounds in the northern Adriatic Sea

This paper aims to synthesize 29 years of data on nutrient concentrations in the Northern Adriatic (1966 to 1995). A significant long-term decrease in phosphorus concentrations was detected since the mid-1980`s. From the beginning of the 1980`s total inorganic nitrogen concentrations were usually higher than in the previous period. The observed changes could be related to changes of phosphorus and nitrogen concentrations in the Po River waters.

phosphorus ; nitrogen ; Adriatic Sea

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