Institution: | (1) Environmental Sciences Division, Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, TN 37831, USA;(2) Department of Biology, West Virginia University, PO Box 6057, Morgantown, WV 26506, USA;(3) Department of Forestry, Virginia Polytechnic Institute and State University, 448 Latham Hall, Blacksburg, VA 24061, USA |