1. Department of Geography University of Latvia Riga Latvia
2. Department of Geology Tallinn University of Technology Tallinn Estonia
3. Institute of Latvian History University of Latvia Riga Latvia
4. Lake and Peatland Research Centre, Aloja Puikule Latvia
5. Institute for Global Ecology Florida Institute of Technology Melbourne Florida USA
6. Department of Geology University of Latvia Riga Latvia
7. Geoecology, Department of Environmental Sciences University of Basel Basel Switzerland
8. Institute of Biology University of Latvia Riga Latvia