1. Department of Forest Mycology and Plant Pathology; Swedish University of Agricultural Sciences; Box 7026 75007 Uppsala Sweden
2. BIOGECO; University of Bordeaux; UMR1202; 33615 Pessac France
3. INRA; BIOGECO; UMR1202; 33612 Cestas France
4. Institute of Biology/Geobotany and Botanical Garden; Martin Luther University Halle-Wittenberg; 06108 Halle Germany
5. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; 04103 Leipzig Germany
6. Department of Agricultural Food and Environmental Sciences; University of Firenze; 50144 Firenze Italy
7. INRA; DYNAFOR; UMR1201; 31326 Castanet-Tolosan France
8. Białowieża Geobotanical Station; Faculty of Biology; University of Warsaw; 17230 Warsaw Poland
9. Museo Nacional de Ciencias Naturales; Consejo Superior de Investigaciones Cientificas; 28006 Madrid Spain