Affiliation: | 1. U.S. Geological Survey, Alaska Science Center, , Anchorage, AK, 99508 USA;2. Department of Biology and Wildlife, University of Alaska Fairbanks, , Fairbanks, AK, 99775 USA;3. Forest Soils Laboratory, University of Alaska Fairbanks, , Fairbanks, AK, 99775 USA;4. Institute of Arctic Biology, University of Alaska Fairbanks, , Fairbanks, AK, 99775 USA |