Reports by Sarah L. O'Brien

	Effects of Topography and Contributions of C3- and C4-Sourced Carbon to the Rate of Soil Carbon Accumulation in Restored Tallgrass Prairie.
	Enhanced Allocation of Root-Derived Lignin and Aliphatic Biopolymers to Soil Organic Matter under Elevated Atmospheric CO2 in the Sweetgum Free Air CO2 Enrichment (FACE) Experiment.
	Incorporation of Radiocarbon from Forest Litter and Roots into Microaggregate-Protected and Unprotected Soil Carbon Pools.