1. Department of Plant and Environmental Sciences, University of Gothenburg, Box 461, SE-405 30 Göteborg, Sweden
2. Halmstad University, Box 823, SE-301 18 Halmstad, Sweden
3. Department of Marine Ecology, University of Gothenburg, Sven Lovén Centre for Marine Sciences Kristineberg, SE-450 34 Fiskebäckskil, Sweden
4. Spanish National Research Council—IIQAB-CSIC, Department of Ecotechnology, Josep Pascual Vila, Jordi Girona 18-26, 08034 Barcelona, Spain