1. GEOMAR Helmholtz Centre for Ocean Research Kiel; Marine Ecology Department; Düsternbrooker Weg 20 24105 Kiel Germany
2. Deutsches Zentrum für Marine Biodiversitätsforschung; Senckenberg am Meer; Südstrand 44 26382 Wilhelmshaven Germany
3. Friedrich Schiller University Jena; Institute for Inorganic and Analytical Chemistry; Jena School for Microbial Communication; Lessingstr.8 07743 Jena Germany