Lucia Kranawetter¹, Furu Mienis², Marta Tarrés Mercader³, Karline Soetaert³, Gert-Jan Reichart⁴ and Peter Kraal⁵, (1)Royal Netherlands Institute for Sea Research (NIOZ), Department of Ocean Systems, Den Burg, Netherlands, (2)Royal Netherlands Institute for Sea Research (NIOZ), Ocean Systems, Den Burg, Netherlands, (3)Royal Netherlands Institute for Sea Research (NIOZ), Department of Estuarine and Delta Systems, Yerseke, Netherlands, (4)NIOZ, Royal Netherlands Institute for Sea Research, Department of Ocean Systems, and Utrecht University, Fac Geosci, Dept Earth Sci, Texel, Netherlands, (5)Royal Netherlands Institute for Sea Research, Den Burg, Netherlands