People | Jonathan H. Sharp

• Research Interests
• Current Projects
• Research Group
• Teaching
• Publications
• Former Advisees

Microbial biogeochemistry of major bioelements in estuarine, coastal, and oceanic waters. Refinement of analytical methodology for improved long-term and large-area trend assessment. Coral reef biogeochemistry. Translation of aquatic chemistry research for resource management.

• Recent pics sampling trip up the Delaware (River) Estuary
• Intercalibration of measurements of dissolved organic carbon and nitrogen in seawater
• Estuarine Mesocosm Studies
• Long-term Trends in Biogeochemistry of the Delaware Estuary
• Improved Ability to Measure Dissolved Inorganic Carbon in Seawater and in Microbial Studies
• The Estuarine Microbial Loop
• Improved Broad-participation Monitoring of Nearshore and Oceanic Waters
• Biogeochemical Studies in Coral Reef Environments

• Kelly Peeler, Research Associate (M.S. Florida State University)
• Allen Davis, M.S. Student (B.A., History, Cornell University; MBA, Cornell University)
• Yoana Voynova, M.S. Student

• Biogeochemical Analytical Methods
• Coastal and Estuarine Chemistry
• Introduction to Ocean Sciences

Sharp, J.H., Beauregard, A.Y., Burdige, D., Cauwet, G., Curless, S.E., Lauck, R., Nagel, K., Ogawa, H., Parker, A.E., Primm, O., Pujo-Pay, M., Savidge, W.B., Seitzinger, E., Spyres, G., and Styles, R. 2004. A direct instrument comparison for measurement of total dissolved nitrogen in seawater. Mar. Chem. 84:181-193.

Yahel, G. Sharp, J.H., Marie, D., Haesse,C. and Genin, A. 2003. In situ feeding and element removal in the coral-reef sponge Theonella Swinhoeii: bulk DOC is the major source for carbon. Limnol. Oceanogr. 48:141-149.

Sharp and 27 co-authors. 2002. A preliminary methods comparison for measurement of dissolved organic nitrogen in seawater. Marine Chem. 78:171-184.

Sharp, J.H., Carlson, C.A., Pletzer, E.T., Castle-Ward, D.M., Savidge, K.B. and Rinker, K.R. 2002. Final dissolved organic carbon broad community intercalibration and preliminary use of DOC reference materials. Mar. Chem. 77:239-253.

Sharp, J.H. 2002. Analytical methods for dissolved organic carbon, nitrogen, and phosphorus. In: D.A. Hansell and C.A. Carlson - Eds. Biogeochemistry of Dissolved Organic. Academic Press (San Diego). Pp. 35-58.

Sharp, J.H. 2001. Marine and aquatic communities, stress from eutrophication. In: S. Levin - Ed. Encyclopedia of Biodiversity, Volume 4. pp. 1-11.

Sharp, J.H. 1997. Marine dissolved organic carbon: Are the older values correct? Mar. Chem. 56:265-277.

Pennock, J.R., Velinsky, D.J., Ludlam, J.M., Sharp, J.H. and Fogel, M.L. 1996. Isotopic fractionation of ammonium and nitrate during uptake by Skeletonema costatum: Implications for 15N dynamics under bloom conditions. Limnol. Oceanogr. 41:451-459.

Sharp, J.H. 1995. Diverse career possibilities and a broad oceanography curriculum. Oceanography 8:106-107.

Sharp, J.H., Benner, R., Bennett, L., Carlson, C.A., Fitzwater, S.E., Peltzer, E.T. and Tupas, L.M. 1995. Analyses of dissolved organic carbon in seawater: The JGOFS EqPac methods comparison. Mar. Chem. 48:91-108.

Sharp, J.H. 1994. What not to do about nutrients in the Delaware Estuary. pp. 423-428. In: K.R. Dyer and R.J. Orth (eds.). Changes in Fluxes in Estuaries: Implications from Science to Management. Olsen and Olsen (Fredensborg, Denmark).

Pennock, J.R. and Sharp, J.H. 1994. Temporal alternation between light- and nutrient-limitation of phytoplankton production in a coastal plain estuary. Mar. Ecol. Progress Ser. 111: 275-288.

Fogel, M.L., Cifuentes, L.A., Velinsky, D.J. and Sharp, J.H. 1992. Relationship of carbon availability in estuarine phytoplankton to isotopic composition. Marine Ecology Progress Series 82:291-300.

Lebo, M.E. and Sharp, J.H. 1992. Modeling phosphorus cycling in a well-mixed coastal plain estuary. Estuarine Coastal Shelf Sci. 35:235-252.

Cifuentes, L.A., Schemel, L.E. and Sharp, J.H. 1990. Qualitative and numerical analyses of the effects of river inflow variations on mixing patterns in estuaries. Estuarine Coastal Shelf Sci. 30:411-427.

Cifuentes, L.A., Fogel, M.L., Pennock, J.R. and Sharp, J.H. 1989. Seasonal variations in the stable nitrogen isotope ratio of ammonium in the Delaware Estuary. Geochim. Cosmochim. Acta 53: 2713-2721.

Coffin, R.B. and Sharp, J.H. 1987. Microbial Trophodynamics in the Delaware Estuary. Marine Ecology Progress Series 41:253-266.Sharp, J.H. 1984. Inputs into microbial food chains. In: J.E. Hobbie and P.J. LeB. Williams-Eds. Hetero-trophic Activity in the Sea. Plenum Press. pp.101-120.

Sharp, J.H. 1983. The distribution of dissolved inorganic and organic nitrogen in the sea. In: E.J. Carpenter and D.G. Capone-Eds. Nitrogen in the Marine Environ-ment. Academic Press pp.1-35.

Sharp, J.H., Culberson, C.H. and Church, T.M. 1982. The chemistry of the Delaware Estuary: General consider-ations. Limnol. Oceanogr. 27:1015-1028.

Sharp, J.H. and Culberson, C.H. 1982. The physical definition of salinity: A chemical evaluation. Limnol. Oceanogr. 27:385-387.

Sharp, J.H., Perry, M.J., Renger, E.H. and Eppley, R.W. 1980. Phytoplankton rate processes in the oligotrophic waters of the central North Pacific Ocean. J. Plankton Research 2:335-353.

Sharp, J.H., Underhill, P.A. and Hughes, D.J. 1979. Inter-action (allelopathy) between marine diatoms: Thalassiosira pseudonana and Phaeodactylum tricornut-um. J. Phycology. 15:353-362.

Sharp, J.H. 1977. Extracellular production of organic matter by marine phytoplankton: Do healthy cells do it? Limnol. Oceanogr. 22:381-399.

Publications in Preparation

Dan Bottom (M.S., 1975) - NOAA Northwest Fisheries Science Center, Seattle, Washington

Dave Hughes (M.S., 1976) - Independent Computer Designer, Cambridge, MA

Peter Underhill (M.S., 1976, Ph.D., 1981) - Senior Research Scientist, Stanford University Department of Genetics

Paula Coble (M.S., 1977) - Associate Professor, University of South Florida Department of Oceanography

Bill Orem (M.S., 1980) - US Geological Survey, Reston, VA

Andy Frake (M.S., 1980) - Computer Expert, Johns Hopkins University School of Public Health

Graham Hillier (M.S., 1980) - Sailmaker, Bermuda

Lew Fox (Ph.D., 1981) - Independent Software Developer, FL

Luis Cifuentes (M.S., 1982, Ph.D., 1986) - Professor, Department of Oceanography and Associate Dean, College of Geosciences, Texas A&M University

Jon Pennock (Ph.D., 1983) - Director of Marine Sciences Program, University of New Hampshire

Deirdre Murphy (M.S., 1984) - Researcher, Maryland Department of Environment

Rick Coffin (Ph.D., 1986) - Senior Research Scientist, Naval Research Laboratory, Washington, DC

Steve Compton (M.S., 1987) - Science Outreach Coordinator, Ursinus College, Collegeville, PA

Marty Lebo (Ph.D., 1990) - Senior Scientist, Weyerhauser Paper Co, NC

John Jamerlan (MS., 1992) - High School Science Teacher, Houston, TX

Kim Eckels-MacIntyre (M.S., 1995)

Hugh MacIntyre (Ph.D., co-advised Ph.D.) - Senior Marine Scientist, Dauphin Island Sea Lab, Dauphin Island, AL

Dawn Castle-Ward (M.S., 1999, Ph.D., 2003) - Post-doctoral researcher University of Tennessee

Matt Schwartz (Ph.D., 2001) - Assistant Professor, University of West Florida

Alex Parker (Ph.D., 2004) - Post Doctoral Fellow, San Francisco State University

Alison Beauregard (Ph.D., 2005) - University of West Florida

Justin Ossolinski (M.S., 2007)