1 College of Forestry and Conservation, University of Montana, Missoula, MT 59812, USA. brady.allred@umontana.edu.
2 College of Forestry and Conservation, University of Montana, Missoula, MT 59812, USA. Institute on the Environment, University of Minnesota, St. Paul, MN 55108, USA.
3 Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
4 Department of Earth Sciences, Montana State University, Bozeman, MT 59717, USA.
5 College of Forestry and Conservation, University of Montana, Missoula, MT 59812, USA.
6 Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078, USA.