1 Department of Biology, Centre of Excellence PLECO (Plants and Ecosystems), Universiteit Antwerpen, Wilrijk, Belgium.
2 Department of Environmental Sciences, Institute of Botany, University of Basel, Basel, Switzerland.
3 Department of Disturbance Ecology and Vegetation Dynamics, Bayreuth Centre of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany.
4 Department of Biological Sciences and Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway.