1. Culture Collection of Algae and Protozoa, Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll, United Kingdom.
2. Department of Marine Sciences, University of Gothenburg, Göteborg, Sweden.
3. BCCM/DCG Diatoms Collection, Laboratory of Protistology and Aquatic Ecology, Department of Biology, Ghent University, Ghent, Belgium.