My research emphasis is in agroecosystem soil ecology and biogeochemistry. I explore the role of microbial communities in decomposition dynamics and rhizosphere processes, their influences on soil organic matter formation and stabilization, and their responses to agricultural management and global change.  This is particularly important when we consider the expansion of  crop production to meet rising global food and energy demands and subsequent impacts of agricultural management strategies on soil microbial communities and soil carbon and nutrient dynamics.