Trends in winter nitrate and phosphate concentrations, and N/P ratio in coastal waters of the North Atlantic, the Baltic Sea, the North Sea and the Mediterranean.
Number of stations in brackets. Atlantic (incl. the Channel and the Celtic Seas) data from: UK and ICES open-water stations. Baltic Sea (incl. the Kattegat) data from: Denmark, Finland, Germany, Latvia, Lithuania, Poland, Sweden and ICES open-water stations. Mediterranean data from: Italy. North Sea (incl. the Skagerrak) data from: Belgium, Denmark, Germany, Netherlands, Norway, Sweden, UK and ICES open-water stations.