1. Department of Biology and Biochemistry of Soils, V.V. Dokuchaev Soil Science Institute, Moscow, Russia
2. Department of Environmental Geology and Geochemistry, Institute of Geology of the CAS, Praha, Czech Republic
3. Soil Science Faculty, Moscow State University, Moscow, Russia
4. Department of Pedology and Soil Conservation, Research Institute for Soil and Water Conservation, Praha, Czech Republic
5. Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Praha, Czech Republic