Fig. 3From: Long-term variability of winter nitrate concentrations in the Northern Wadden Sea driven by freshwater discharge, decreasing riverine loads and denitrificationa Annual average salinity anomaly (Solid line and dots; based on the deviation from the mean monthly salinity) from 1984 to 2005 in the List Tidal Basin and the mean annual riverine discharge 1984–2002 of the rivers Elbe plus Weser (hatched area). b Correlation between annual freshwater discharge by the rivers Elbe plus Weser and the salinity anomaly in the List Tidal BasinBack to article page