Affiliation: | (1) Department of Chemistry, University of Oslo, 0315 Oslo, Norway;(2) Department of Biology, University of Joensuu, 80101 Joensuu, Finland;(3) Agder University College, 4604 Kristiansand, Norway;(4) Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12561 Berlin, Germany;(5) GSF National Research Centre for Environment and Health, Neuherberg bei München, Germany;(6) Swiss Federal Research Institute, WSL, 8903 Birmensdorf, Switzerland;(7) Finnish Forest Research Institute, 01301 Vantaa, Finland |