Norby R, DeLucia E, Gielen B, Calfapietra C, Giardina C, King J, Ledford J, McCarthy H, Moore D, Ceulemans R, De Angelis P, Finzi A, Karnosky D, Kubiske M, Lukac M, Pregitzer K, Scarascia-Mugnozza G, Schlesinger W, Oren R. 2005. Forest response to elevated CO2 is conserved across a broad range of productivity. Proceedings of the National Academy of Sciences 102:18052-18056. [PDF]
King J, Hanson P, Bernhardt E, DeAngelis P, Norby R and K Pregitzer. 2004. A multiyear synthesis of soil respiration responses to elevated atmospheric CO2 from four forest FACE experiments Global Change Biology 10:1027-1042. [PDF]
Davidson E, Savage K, Bolstad P, Clark D, Curtis P, Ellsworth D, Hanson P, Law B, Luo Y, Pregitzer K, Randolph J and D Zak. 2002. Belowground carbon allocation in forests estimated from litterfall and IRGA-based soil respiration measurements. Agricultural and Forest Meteorology 113:39-51. [PDF]