Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long-term enhancement of forest productivity under elevated CO2

Drake, J., A. Gallet-Budynek, K. Hofmockel, E. Bernhardt, S.A. Billings, R. Jackson, K. Johnsen, J. Lichter, R. Phillips, H. McCarthy, D. Moore, M.L. McCormack, S. Palmroth, Oren, J. Pippen, S. Pritchard, K. Treseder, W. Schlesinger, E. DeLucia, and A. Finzi. 2011. Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long-term enhancement of forest productivity under elevated CO2. Ecology Letters 14:349-357, doi: 10.111/j.1461-0248.2011.01593.x.