1. Institute of Chemistry and Dynamics of the Geosphere 3, Research Centre Jülich, D-52425 Jülich, Germany
2. Department of Bioinformatics, Biocenter, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
3. Experimental Phycology and Culture Collection of Algae (SAG), Department of the Albrecht-von-Haller-Institute for Plant Sciences at the University of Göttingen, Untere Karspüle 2, D-37073 Göttingen, Germany
4. Leibniz-Institute of Freshwater Ecology & Inland Fisheries, Alte Fischerhütte 2, D-16775 Stechlin, Germany