His research focuses on evaluating the influence that anthropogenic and natural climate and environmental change have on the biogeochemical cycling of carbon, nitrogen, and other biolimiting elements in both modern and ancient lacustrine and marine settings. He introduced the concept of MOSSFA and how it forms. He discussed how the Mississippi River deltaic system and other environmental factors contributed to the formation of MOSSFA during the Deepwater Horizon oil spill. View video.