Acknowledgments
Many thanks to Edith Stabentheiner for introducing the first author as an IANUS programme grantee in May 2014 in Graz to the international bee monitoring group presented by Karl Crailsheim and Robert Brodschneider. The authors express their sincere gratitude to the Head of the Association of Beekeepers “Bukovynian Beekeeper” Vasyl Palamar and Liubomyr Puschuk, the Vice-head of the mentioned association, for their enthusiastic support in the communication with beekeepers. We thank all beekeepers that provided data and to the students, colleagues and others who participated in data collection. We also appreciate the valuable suggestions and improvements made by the co-chair of the international colony losses monitoring group of COLOSS, Robert Brodschneider.