1. Global Ecology Unit CREAF-CEAB-CSIC-UAB; CSIC; Catalonia Spain
2. CREAF; Catalonia Spain
3. Department of Biological Sciences; Virginia Tech; Blacksburg VA 24061 USA
4. Institute of Biological Sciences; University of Rostock; 18059 Rostock Germany
5. Institute of Biochemical Plant Pathology; Research Unit Environmental Simulation; Helmholtz Zentrum; 85764 Neuherberg Germany