Lucas A Cernusak¹, Adrià Barbeta², Rebekka Bögelein³, Rosemary T Bush⁴, Juan Pedro Ferrio⁵, Lawrence B Flanagan⁶, Arthur Gessler⁷, Paula Martín-Gómez⁸, Regina Hirl⁹, Ansgar Kahmen¹⁰, Claudia Keitel¹¹, Chun-Ta Lai¹², Niels Munksgaard¹³, Daniel B Nelson¹⁴, Jerome Ogee¹⁵, John S Roden¹⁶, Hans Schnyder⁹, Steven Voelker¹⁷, Lixin Wang¹⁸, Hilary Stuart-Williams¹⁹, Lisa Wingate², Wusheng Yu²⁰, Liangju Zhao²¹ and Matthias Cuntz²², (1)James Cook University, College of Science and Engineering, Minneapolis, MN, United States, (2)INRA Bordeaux-Aquitaine, Villenave d'Ornon Cedex, France, (3)University of Trier, Faculty of Regional and Environmental Sciences – Geobotany, Trier, Germany, (4)Northwestern University, Evanston, IL, United States, (5)Univ of LLeida, Lleida, Spain, (6)Univ Lethbridge, Lethbridge, AB, Canada, (7)WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland, (8)INRA Bordeaux, Bordeaux, France, (9)Technische Universität München, Freising, Germany, (10)University of Basel, Environmental Sciences - Botany, Basel, Switzerland, (11)University of Sydney, Sydney, Australia, (12)San Diego State University, San Diego, CA, United States, (13)James Cook University, Cairns, Australia, (14)University of Basel, Basel, Switzerland, (15)INRA Institut National de la Recherche Agronomique, Paris Cedex 07, France, (16)Southern Oregon Univ, Ashland, OR, United States, (17)Utah State University, Department of Plants, Soils and Climate, Logan, UT, United States, (18)Indiana University Purdue University Indianapolis, Department of Earth Sciences, Indianapolis, IN, United States, (19)The Australian National University, Canberra, Australia, (20)Institute of Tibetan Plateau Research,Chinese Academy of Sciences, Beijing, China, (21)Northwest University, Xi'an, China, (22)INRA Institut National de la Recherche Agronomique, Nancy, France