1. Institute of Systematics and Evolution of Animals Polish Academy of Sciences Kraków Poland
2. Institute of Soil Biology and Biogeochemistry Biology Centre CAS České Budějovice Czech Republic
3. Department of Ecology Swedish University of Agricultural Sciences Uppsala Sweden
4. Institute of Botany, Faculty of Biology Jagiellonian University Kraków Poland
5. Institute of Ecology and Earth Sciences University of Tartu Tartu Estonia
6. Mycology and Microbiology Center University of Tartu Tartu Estonia