University of Maryland. Ph.D. Marine Environmental and Estuarine Studies Program. 1989. Dissertation title: The Effect of Submersed Macrophytes on Nitrogen Cycling in Estuarine Sediments.
Cornell University. A.B. Biology. 1981
Estuarine Ecology PCB 4049/5445
Aquatic Botany BOT 4404
My major research interest is estuarine nutrient biogeochemistry, which is the study of how bacteria alter essential nutrients like nitrogen and phosphorus in estuaries. A major focus of my research has been the study of nitrogen in sediments, specifically the importance of nitrification and denitrification in the removal of fixed nitrogen from estuaries. I am also interested in water quality, including the factors controlling dissolved oxygen dynamics and metabolism and in-situ nutrient analysis. I am also studying atmospheric deposition of mercury, trace metals and major ions.
Sediment nutrient cycling in estuaries
Atmospheric deposition of mercury, trace metals and
major ions in the Pensacola Bay Watershed
Murrell, M.C., J. Campbell, J.E Hagy, and J.M. Caffrey. 2009. Benthic and water column processes in a subtropical estuary: effects of light and nutrient on oxygen fluxes. Estuarine Coastal and Shelf Science.81:501-512.
Smith, K.A. and J.M. Caffrey. 2009. The Effects of Human and Climatic Impacts on Sediment Nitrogen Dynamics in an Urban Estuary, Escambia Bay, Florida, USA. Hydrobiologia.
Caffrey, J.M., N. Bano, K. Kalanetra and J. T. Hollibaugh. 2007. Environmental factors controlling ammonia-oxidation by ammonia oxidizing Bacteria and Archaea. ISME Journal 1:660-662.
Caffrey, J.M. 2004. Factors controlling net ecosystem metabolism in U.S. estuaries. Estuaries 27: 90-101
Caffrey, J.M., M. Brown, B. Tyler, M. Silberstein (eds.) 2002. Changes in a California Estuary: an Ecosystem Profile of Elkhorn Slough. Elkhorn Slough Foundation. Moss Landing, CA.
Caffrey, J.M., N.P. Sloth, H. Kaspar, and T.H. Blackburn. 1993. Effect of organic loading on nitrification and denitrification in a marine sediment microcosm. FEMS Microbiology Ecology. 12:159-167.
Caffrey, J.M. and W.M. Kemp. 1992. Influence of the submersed plant, Potamogeton perfoliatus L., on nitrogen cycling in estuarine sediments. Limnology and Oceanography. 37:1483-1495.