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Trends in nutrient inputs
· The inputs of phosphorus to the Baltic Sea are now much
· But in recent years this decrease has slowed, and nutrient
· Inputs of nitrogen, which largely originate from diffuse sources such as farmland have been more difficult to reduce.
· Annual atmospheric nitrogen deposition into the Baltic Sea
· The inputs of phosphorus to the Baltic Sea are now much
lower than in the 1980s, thanks to improved wastewater
treatment. · But in recent years this decrease has slowed, and nutrient
inputs from rivers evidently did not decrease during
the period
1994-98.· Inputs of nitrogen, which largely originate from diffuse sources such as farmland have been more difficult to reduce.
· Annual atmospheric nitrogen deposition into the Baltic Sea
decreased by
nearly 40% between 1985 and 1997.