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Carbon and Nitrogen Pools in a Tallgrass Prairie Soil under Elevated Carbon Dioxide

^a Dep. of Agronomy, Kansas State Univ., Manhattan, KS 66506
^b 3121 Miller Plant Sciences Bldg., University of Georgia, Athens, GA 30606
^c Kansas State University, 2004 Throckmorton Plant Sciences Center, Dep. of Agronomy, Manhattan, KS 66506-5501

View larger version (31K): [in a new window]   Fig. 1. Isotope signature of CO2 produced during long-term incubation of soil at the (A.) 0- to 5- and (B.) 5- to 15-cm depths. Standard errors are shown. Each value is the mean of three replications. Note differences in "Days of Incubation" between A and B.