1. Department of Aquatic Ecology & Environmental Biology Institute for Water and Wetland Research, Radboud University Nijmegen Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
2. Department of Biology Villanova University Villanova PA 19085 U.S.A.
3. Department of Energy and Environmental Studies Energy and Sustainability Research Institute Groningen, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
4. Centre for Ecology and Hydrology Maclean Building, Benson Lane Crowmarsh Gifford Wallingford Oxfordshire OX10 8BB U.K.
5. Department of Biology University of Antwerp Campus Drie Eiken, D.C.124, Universiteitsplein 1 2610 Wilrijk Belgium
6. Upland Environments Research Unit School of Environment and Development, The University of Manchester PO Box 88 Manchester M60 1QD U.K.
7. Duke University Wetland Center Nicholas School of the Environment, Duke University Box 90333 Durham NC 27708 U.S.A.
8. Département de phytologie Faculté des sciences de l'agriculture et de l'alimentation, Université Laval 2425, Rue de l'Agriculture Québec G1V 0A6 Canada
9. Institute of Biodiversity and Ecosystem Dynamics University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
10. B‐Ware Research Centre Toernooiveld 1 6525 ED Nijmegen The Netherlands