1. Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT- The Arctic University of Norway, N-9037 Tromsø, Norway.
2. Department of Geography and Environment, Mount Allison University, Sackville, NB, E4L 1A7, Canada.
3. Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan.
4. Nara Plant Protection Center, Sakurai, Nara, Japan.
5. Faculty of Biology – Geobotany, University of Freiburg, Schaenzlestr. 1, D-79104 Freiburg, Germany.
6. Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Vienna, Austria.