1. Norwegian Institute for Water Research, Gaustadalléen 21, NO-0349 Oslo, Norway, School of Biological Sciences, University of Portsmouth, King Henry I Street, Portsmouth, PO1 2DY, U.K., Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Texel, The Netherlands, Department of Ecological Chemistry, UFZ Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany, National Water Reference Laboratory for Slovakia, Water Research Institute, Nabr. arm. gen. L. Svobodu 5,...