Does soil N availability sustain long-term ecosystem response to elevated CO2?

McKinley, D. C. ; Romero, J. C. ; Hungate, Bruce A. ; Drake, Bert G. ; Megonigal, J. Patrick. (2009). Does soil N availability sustain long-term ecosystem response to elevated CO2? . Global Change Biology, 15 (8) , 2035-2048. http://dx.doi.org/10.1111/j.1365-2486.2008.01836.x