Long-term trends in eutrophication in the Baltic Sea

The chart shows the annual classified Eutrophication status in each of 9 basins of the Baltic Sea over the period from 1901 to 2012. The status is assigned one of five classes "High", "Good", "Moderate", "Poor" or "Bad", depending on the Eutrophcation Ratio calculated by the HEAT tool. See more details in Andersen et al. (2015) Biol. Rev. 1 doi: 10.1111/brv.12221