%0 Journal Article %J Proceedings of the National Academy of Sciences %D 2018 %T Nitrate is an important nitrogen source for Arctic tundra plants %A Xue-Yan Liu %A Keisuke Koba %A Lina A. Koyama %A Sarah E. Hobbie %A M. Weiss %A Inagaki, Yoshiyuki %A Gaius R Shaver %A Anne E. Giblin %A S. Hobara %A K. J. Nadelhoffer %A M. Sommerkorn %A Edward B Rastetter %A George W Kling %A J. A. Laundre %A Midori Yano %A Akiko Makabe %A Y. Yano %A Liu, Cong-Qiang %K Arctic tundra plants %K nitrogen dynamics %K plant nitrate %K soil nitrate %K stable isotopes %B Proceedings of the National Academy of Sciences %V 115 %P 3398 - 3403 %8 03//2018 %G eng %U http://www.pnas.org/lookup/doi/10.1073 %N 13 %! Proc Natl Acad Sci USA %R 10.1073/pnas.1715382115