John J. Walsh
Distinguished University Professor
Biological Oceanography
Ph.D., University of Miami, 1969
Office Phone: (727) 553-1164
Email: jwalsh@usf.edu
CV: View PDF
Research Interests
As a biological oceanographer, J. J. Walsh has focused on systems analyses of continental shelves over the last 40 years, publishing more than 100 books, papers, and reports. In addition to prior studies of coastal upwelling off Peru, Northwest Africa, Baja California, and Venezuela, the ecological components of global carbon and nitrogen budgets have been stressed. Satellite images have also been used to constrain coupled numerical models of biophysical processes effecting species succession of plankton within the food webs of the Southern Ocean, the Bering/Chukchi/ Beaufort Seas, the Mid-Atlantic/South Atlantic Bights, the Sargasso/Caribbean Seas, and the Gulf of Mexico. Continuing research involves simulation analyses of the future food web consequences of past loss of ice cover within Arctic Seas. During recent years, this basic research has also led to applied simulation analyses of the origin, transport, and fate of Florida toxic red tides of dinoflagellates for future development of operational ecological models of phytoplankton competition, effected by biochemical cycling of multiple elements and nested within physical circulation models, in shelf waters of the southeastern United States as part of the newly formed Center for Prediction of Red tides (CPR) at USF.
Selected Publications
Walsh, J.J., J.K. Jolliff, B.P. Darrow, J.M. Lenes, S.P. Milroy, D. Remsen, D.A. Dieterle, K.L. Carder, F.R. Chen, G.A. Vargo, R.H. Weisberg, K.A. Fanning, F.E. Muller-Karger, E. Shinn, K.A. Steidinger, C.A. Heil, J.S. Prospero, T.N. Lee, G.J. Kirkpatrick, T.E. Whitledge, D.A. Stockwell, C.R. Tomas, T.A. Villareal, A.E. Jochens, and P.S. Bontempi. 2006. Red tides in the Gulf of Mexico: where, when, and why. J. Geophys. Res. 111, C11003, doi:10.1029/2004JC002813.
Walsh, J.J., D.A. Dieterle, W. Maslowski, J.M. Grebmeier, T.E. Whitledge, M. Flint, I.N. Sukhanova, N. Bates, G.F. Cota, D. Stockwell, S.B. Moran, D.A. Hansell, and C.P. McRoy. 2005. A numerical model of seasonal primary production within the Chukchi/Beaufort Seas. Deep-Sea Res. 52:3541-3576
Walsh, J.J., D.A. Dieterle, W. Maslowski, and T.E. Whitledge. 2004. Decadal shifts in biophysical forcing of marine food webs in the Arctic: numerical consequences. J. Geophys. Res. 109, C05031, doi:10.1029/2003JC001945.
Walsh, J.J., R.H. Weisberg, D.A. Dieterle, R. He, B.P. Darrow, J.K. Jolliff, K.M. Lester, G.A. Vargo, G.J. Kirkpatrick, K.A. Fanning, T.T. Sutton, A. E. Jochens, D.C. Biggs, B. Nababan, C. Hu, and F. E. Muller-Karger. 2003. The phytoplankton response to intrusions of slope water on the West Florida shelf: models and observations. J. Geophys. Res. 108, 3190, doi: 10.1029/2002JC001406.
Walsh, J.J. and K.A. Steidinger. 2001. Saharan dust and Florida red tides: the cyanophyte connection. J. Geophys. Res. 106:11597-11612.
Walsh, J.J., D.A. Dieterle, and J.M. Lenes. 2001. A numerical analysis of carbon dynamics of the Southern Ocean phytoplankton community: the roles of light and grazing in effecting both sequestration of atmospheric CO2 and food availability to larval krill. Deep-Sea Res. 48:1-48.
