1. Department of Systematic Zoology Faculty of Biology Adam Mickiewicz University Umultowska 89 Poznań 61‐614 Poland
2. CREAF Cerdanyola del Valles Catalonia 08193 Spain
3. Population Ecology Lab Faculty of Biology Adam Mickiewicz University Umultowska 89 Poznań 61‐614 Poland
4. Department of Ecology and Environmental Biology Faculty of Biology and Agriculture University of Rzeszów Zelwerowicza 4 Rzeszów 35‐601 Poland
5. Laboratory of Aeropalynology Faculty of Biology Adam Mickiewicz University Umultowska 89 Poznań 61‐614 Poland
6. Department of Forest Ecology Forest Research Institute Braci Lesnej 3, Sękocin Stary Raszyn 05‐090 Poland
7. Department of Silviculture and Genetics of Forest Trees Forest Research Institute Braci Lesnej 3, Sękocin Stary Raszyn 05‐090 Poland
8. Department of Clinical and Environmental Allergology Jagiellonian University Medical College Śniadeckich 10 Kraków 31‐531 Poland
9. Department of Climatology Institute of Geography and Spatial Management Jagiellonian University in Krakow Gronostajowa 7 Krakow 30‐387 Poland
10. Cornell Lab of Ornithology 159 Sapsucker Woods Rd. Ithaca New York 14850 USA