1. Department of Marine Sciences University of Gothenburg Gothenburg Sweden
2. Department of Ecology, Environment and Plant Sciences Stockholm University Stockholm Sweden
3. Nordcee, Department of Biology University of Southern Denmark Odense Denmark
4. Center for Electromicrobiology, Department of Biosciences Aarhus University Aarhus Denmark
5. Center for Water Technology (WATEC), Department of Biosciences Aarhus University Aarhus Denmark