1. Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA
2. School of Forest Resources, University of Maine, Orono, ME, USA
3. Earth Systems Research Center, University of New Hampshire, Durham, NH, USA
4. Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH, USA
5. USDA Forest Service, Northern Research Station, Bradley, ME, USA
6. Natural Resources & Earth Systems Science, University of New Hampshire, Durham, NH, USA