1. School of Engineering, University of Applied Sciences Upper Austria, Wels, Austria
2. Department of Environment and Biodiversity, Paris Lodron University of Salzburg, Salzburg, Austria
3. Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
4. Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
5. Krkonoše National Park Administration, Vrchlabí, Czech Republic
6. Department of Phycology, Institute of Botany, The Czech Academy of Sciences, Třeboň, Czech Republic