His research focuses on the biogeochemical cycling of carbon and nutrients in aquatic environments. Current research projects are investigating storm water nutrients, artificial reef biofilm communities, and food web dynamics in Mississippi coastal waters. An understanding of carbon and nutrient dynamics in aquatic ecosystems is essential to understanding the basic ecological functions of these systems. The results of Dr. Dillon's research can be used by local, state, and federal agencies in developing management plans and policies for coastal ecosystems.