The assessment of
progress towards MAI of nitrogen and phosphorus is based on data on normalized
average total input to the sub-basins of the Baltic Sea during 2010-2012. The
fulfilment of MAI is identified by comparing the total input to a particular
sub-basin with the Maximum Allowable Input for that sub-basin. The progress achieved
by 2012 is given in percentages of MAI where values below 100% indicate
fulfilling the requirements of the HELCOM nutrient reduction scheme.
The MAI of nitrogen and phosphorus were
fulfilled in Kattegat, the Danish Straits and Bothnian Sea during 2010-2012 (see Table below).
For Bothnian Bay nitrogen inputs are close to MAI but cannot be regarded as
fulfilled with statistical certainty. Total normalized nitrogen and phosphorus
inputs to the Baltic Sea have decreased by 9% and 14%, respectively, since the reference
period (1997-2013) and 18%
and 23% since the mid-1990s.