1. Department of Forest Pathology, Mycology and Tree Physiology, Institute of Forest Ecosystem Protection University of Agriculture in Krakow Al. 29 Listopada 4631‐425 Krakow Poland
2. Department of Forest Protection, Entomology and Forest Climatology, Institute of Forest Ecosystem Protection University of Agriculture in Krakow Al. 29 Listopada 46 31‐425 Krakow Poland
3. Natural Resources Institute Finland (Luke) Latokartanonkaari 9 00790 Helsinki Finland