Alexandra G Konings, Stanford University, Department of Earth Sciences, Stanford, CA, United States, Krishna Rao, Stanford University, Stanford, CA, United States, William Anderegg, University of Utah, School of Biological Sciences, Salt Lake City, UT, United States, Anna Sala, The University of Montana, Missoula, MT, United States and Jordi Martínez-Vilalta, CREAF, Cerdanyola del Vallès, Spain