To end the eutrophication of the Baltic Sea: Do the measures show effects?
Between 1995 and 2014, river discharges of the two main drivers of eutrophication, nitrogen and phosphorus, were significantly reduced in the western Baltic Sea. But are these measures also having an effect in the open Baltic Sea? The marine chemists of the IOW have not yet found any clearly discernible changes there. In a recently published study, they report on a method they used to track the fate of nutrients from river mouths into the Baltic Sea. They show: Yes, the reductions in river discharges are also detectable in the Baltic Sea, but they are compensated by discharges from other sources.
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