1. NIOZ Royal Netherlands Institute for Sea Research, Department of Coastal Systems, PO Box 59, 1790 AB, Den Burg, Texel, The Netherlands
2. Faculty of Science and Engineering, Groningen Institute of Evolutionary Life Sciences, University of Groningen, PO Box 11103, 9700 CC Groningen, The Netherlands
3. NIOZ Royal Netherlands Institute for Sea Research, Department of Microbiology and Biogeochemistry, PO Box 59, 1790 AB, Den Burg, Texel, The Netherlands
4. NIOZ Royal Netherlands Institute for Sea Research, Department of Estuarine and Delta Systems, PO Box 140, 4400 AC, Yerseke, The Netherlands