Fig. 2: Salinity in March (left) and July (right) 2020, in the Schlei (a), DZBC (b) and Rügener boddens (c). Panels a – c refer to subregions as indicated in Figure 1. Blue circles A-I: sampling points for time-series. Yellow circles #1-68: shore samples. Green triangles indicate LUNG monitoring point with data included into salinity interpolation. Arrows indicate exchange points with Baltic Sea water. SaB: Saaler Bodden. BoB: Bodstedter Bodden: BAT: Barther Bodden and Grabow. WRBC: Western Rügen Bodden Chain. NRBC: Northern Rügen Bodden Chain. GB: Greifswalder Bodden. P: Peene Stream. AW: Achterwasser.