1. Department of Biology and Wildlife University of Alaska Fairbanks Fairbanks Alaska USA
2. Institute of Arctic Biology University of Alaska Fairbanks Fairbanks Alaska USA
3. Alaska Ecoscience Fairbanks Alaska USA
4. U.S. Army Cold Regions Research and Engineering Laboratory Fort Wainwright Alaska USA
5. Geophysical Institute University of Alaska Fairbanks Fairbanks Alaska USA
6. Tyumen State Oil and Gas University Tyumen Russia