1. School of the Environment Yale University New Haven Connecticut USA
2. Smithsonian Tropical Research Institute Balboa Panama
3. Departamento de Biología y Geología, Física y Química inorgánica. ESCET Universidad Rey Juan Carlos Madrid Spain
4. School of Natural Sciences Bangor University Bangor UK
5. Department of Ecology and Evolutionary Biology University of Connecticut Storrs Connecticut USA
6. Department of Plant Ecology, Bayreuth Center of Ecology and Environmental Research (BayCEER) University of Bayreuth Bayreuth Germany
7. Department of Botany and Plant Pathology Oregon State University Corvallis Oregon USA