Margaret Evans¹, Stefan Klesse², Robert J DeRose³, Flurin Babst², Leander DL Anderegg⁴, Jodi N Axelson⁴, Bryan Black⁵, Ailene Ettinger⁶, Hardy Griesbauer⁷, Christopher H Guiterman⁸, Grant L. Harley⁹, Jill E Harvey¹⁰, Yueh-Hsin Lo¹¹, Ann M Lynch¹², Chirstopher O'Connor¹³, Christina Restaino¹⁴, David Sauchyn¹⁵, John Shaw¹⁶, Dan J Smith¹⁷, Lisa Wood¹⁸ and Jose Villanueva Diaz¹⁹, (1)Tucson, AZ, United States, (2)WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland, (3)Utah State University, Logan, UT, United States, (4)University of California Berkeley, Berkeley, CA, United States, (5)University of Arizona, Tucson, United States, (6)Harvard University, Cambridge, MA, United States, (7)Ministry of Forests, Lands, Natural Resource Operations and Rural Development, Prince George, BC, Canada, (8)University of Arizona, Tucson, AZ, United States, (9)University of Idaho, Moscow, ID, United States, (10)220 Hafnarfjordur, Iceland, (11)Universidad Publica de Navarra, Department of Science, Pamplona, Spain, (12)Rocky Mountain Research Station, Fort Collins, CO, United States, (13)US Forest Service, Rocky Mountain Research Station, Missoula, MT, United States, (14)University of Davis, Department of Environmental Science, Policy, and Management, Davis, CA, United States, (15)University of Regina, Prairie Adaptation Research Collaborative (PARC), Regina, SK, Canada, (16)US Forest Service, Logan, UT, United States, (17)University of Victoria, Victoria, BC, Canada, (18)University of Northern British Columbia, Ecosystem Science and Management, Prince George, Canada, (19)Instituto Nacional de Investigaciones Forestales, Laboratorio de Dendrocronologia, Gómez Palacio, Mexico