1. Department of Forest and Rangeland Stewardship and Graduate Degree Program in EcologyColorado State University Fort Collins Colorado
2. Departamento de Recursos Hídricos, Facultad de Ingeniería AgrícolaUniversidad Nacional Agraria La Molina Lima Peru
3. Biospheric Sciences LabScience Systems and Applications, Inc. Lanham Maryland
4. School of Marine and Atmospheric SciencesStony Brook University Stony Brook New York
5. Instituto de Investigaciones Geológicas y del Medio AmbienteUniversidad Mayor de San Andres La Paz Bolivia
6. Department of Geography and Byrd Polar and Climate Research CenterOhio State University Columbus Ohio