SPECIAL FEATURE: FUNCTIONAL DIVERSITY Intra-specific and inter-specific variation in specific leaf area reveal the importance of abiotic and biotic drivers of species diversity across elevation and latitude

Hulshof, C.M. (corresponding author, [email protected]) & Enquist, B.J. ([email protected]): Department of Ecology and Evolutionary Biology, University of Arizona, 1041 East Lowell, Tucson, AZ, 85721, USA Violle, C. ([email protected]): Centre d’Ecologie Fonctionnelle et Evolutive, 1919 route deMende, 34293, Montpellier 5, France Spasojevic, M.J. ([email protected]) & Harrison, S. ([email protected]): Department of Environmental Science and Policy, University of California–Davis, One Shields Avenue, Davis, CA, 95616, USA McGill, B. ([email protected]): School of Biology and Ecology, University of Maine, Deering Hall Room 202, Orono, ME, 04469, USA Damschen, E. ([email protected]): Department of Zoology, University of Wisconsin–Madison, 430 Lincoln Drive, Madison, WI, 53706, USA Enquist, B.J. ([email protected]): The Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM, 87501, USA Abstract