1. School of Forest Resources & Environmental Science Michigan Technological University 1400 Townsend Dr. Houghton MI 49931 USA
2. U.S. Geological Survey Southwest Biological Science Center 2290 S. West Resource Blvd Moab UT 84532 USA
3. Department of Ecosystem and Conservation Sciences University of Montana 32 Campus Dr. Missoula MT 59812 USA
4. USDA Forest Service International Institute of Tropical Forestry Jardín Botánico Sur, 1201 Calle Ceiba Río Piedras 00926‐1115 Puerto Rico
5. Fundación Puertorriqueña de Conservación P.O. Box 362495 San Juan 00936‐2495 Puerto Rico