Global patterns of foliar nitrogen isotopes and their relationships with climate, mycorrhizal fungi, foliar nutrient concentrations, and nitrogen availability

Joseph M. Craine, Andrew J. Elmore, Marcos P M Aidar, Mercedes Bustamante, Todd E. Dawson, Erik A. Hobbie, Ansgar Kahmen, Michelle C. MacK, Kendra K. McLauchlan, Anders Michelsen, Gabriela B. Nardoto, Linda H. Pardo, Josep Peñuelas, Peter B. Reich, Edward A G Schuur, William D. Stock, Pamela H. Templer, Ross A. Virginia, Jeffrey M. Welker, Ian J. Wright