1. CSIC-UIB; Instituto Mediterráneo de Estudios Avanzados; Esporles Spain
2. Département des Sciences Biologiques; Université du Québec à Montréal, Succursale Centre-Ville; Montréal, Quebec Canada
3. Departamento de Ecología; Universidad Autónoma de Madrid; Madrid Spain
4. Institute of Ecosystem Studies; Millbrook New York USA
5. United States Geological Survey; Denver Colorado USA
6. Donald Bren School of Environmental Science and Management; University of California, Santa Barbara; Santa Barbara California USA
7. Ecology, Evolution, and Organismal Biology Department; Iowa State University; Ames Iowa USA