1. School of Forest Resources, University of Maine, Orono, ME 04469, USA
2. Northeast Temperate Network, U.S. National Park Service, Bar Harbor, ME 04609, USA
3. Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
4. NOAA’s National Centers for Environmental Information, Boulder, CO 80309, USA
5. Maine Forest Service, Department of Agriculture Conservation and Forestry, Augusta, ME 04333, USA
6. Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86001, USA
7. U.S.D.A. Forest Service, Pacific Northwest Research Station, Olympia, WA 98512, USA
8. U.S.D.A. Forest Service, Northern Research Station, Bradley, ME 04411, USA