Hungate, Bruce A, Johnson, Dale W, Dijkstra, Paul, Hymus, Graham J, Stiling, Peter D, Megonigal, J Patrick, Pagel, Alisha L, Moan, Jaina L, Day, Frank, Li, Jiahong, Hinkle, C Ross, and Drake, Bert G, Nitrogen Cycling During Seven Years of Atmospheric CO2 Enrichment in a Scrub Oak Woodland: .