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. 2015 Mar;50:196–205. doi: 10.1016/j.ecolind.2014.10.019

Fig. 2.

Fig. 2

Percentage of area with sea surface salinity less than 7 in the Baltic Sea during the years 1961–2009 (middle panel) and the Baltic Sea surface water (0–25 m) salinities during the years 1977 (left panel) and 2007 (right panel). Source of data: ICES Dataset on Ocean Hydrography (The International Council for the Exploration of the Sea Copenhagen. 2011). SSS of 7 marked with arrows. Salinity gradients above 8 in the Danish Sounds and below 6 in the Bay of Bothnia and Gulf of Finland are not shown.