1. Centre for Marine Studies, University of Queensland, St Lucia Q 4072, Australia;
2. Smithsonian Environmental Research Center, PO Box 28, Edgewater, MD 21037, USA;
3. Ecosystem Dynamics, Research School of Biological Science, Australian National University, Canberra ACT 0200, Australia;
4. Smithsonian Tropical Research Institute, Balboa, Republic of Panama;
5. Technische Universität Kaiserslautern, Department of Plant Ecology and Systematics, 67663 Kaiserslautern, Germany;
6. South‐east Environmental Research Center, Florida International University, Miami, FL 33199, USA