Professor, Fisheries
and Aquatic Sciences

PO Box 110400
Gainesville, FL 32611-0400
(352) 392-5870
Fax: 352-392-5113


Dr. Havens is Director of the Florida Sea Grant College Program at the University of Florida and a Professor in the UF/IFAS School of Forest Resources and Conservation, Program in Fisheries and Aquatic Sciences.

Dr. Havens has 35 years of professional experience in aquatic research, education and outreach, and has worked with Florida aquatic ecosystems and the use of objective science in their management for the past 25 years. His area of research specialty is the response of lakes and estuaries to natural and human-caused stressors, including hurricanes, drought, climate variability and nutrient enrichment.

Dr. Havens has published over 160 peer-reviewed journal articles in his area of expertise, several book chapters, several invited review papers, an edited book with colleagues in the P.R. China and two books on the Global Water Crisis. Most recently he and his international colleagues have written papers about the expected synergistic effects of climate change and eutrophication on lakes and estuaries, the future of controlling toxic algal blooms in the face of climate change, and the role that nitrogen pollution plays in stimulating toxic blue-green algae blooms.

He is a recipient of the Edward Deevey, Jr. Award from the Florida Lake Management Society for his research dealing with Florida lakes. He is a member of the Executive Board of the Florida Ocean Alliance, a non-partisan organization dedicated to bringing together government, academic and private sectors in Florida to protect and enhance the coastal and ocean resources, and is a member of the Board of Directors of the Florida Institute of Oceanography. At the University of Florida, he has served as Chair of the UF Oil Spill Task Force, the UF Oyster Recovery Team, and the UF/IFAS Toxic Algae Task Force.



  • PhD, Biology, West Virginia University, 1984
  • MS, Biology, West Virginia University, 1981
  • BA, Biology, State University of New York at Buffalo, 1979


Selected recent publications

Havens, K.E., G. Ji, J.R. Beaver, R.S. Fulton and C.E. Teacher, 2017. Dynamics of cyanobacteria blooms are linked to the hydrology of shallow Florida lakes and provide insight into possible impacts of climate change. Hydrobiologia DOI 10.1007/s10750-017-3425-7.

Paerl, H.W., W.S. Gardner, K.E. Havens, A.R. Joyner, M.J. McCarthy, S.E. Newell, B. Qin and J.T. Scott. 2015. Mitigating cyanobacterial harmful algal blooms in aquatic ecosystems impacted by climate change and anthropogenic nutrients. Invited Review, Harmful Algae, Online:

Havens, K.E. and H.W. Paerl. 2015. Climate change at a crossroad for control of harmful algal blooms. Environmental Science and Technology, DOI 10.1021/acs.est.5b03990.

Smith, V.H., W.K. Dodds, K.E. Havens, D.E. Engstrom, H.W. Paerl, B. Moss and G.E. Likens. 2014. Comment: Cultural eutrophication of natural lakes in the United States is real and widespread. Limnology and Oceanography 59: 2217-2225.

Conley, D.J., H.W. Paerl, R.W. Howarth, D.F. Boesch, S.P. Seitzinger, K.E. Havens, C. Lancelot and G.E. Likens. 2010. Eutrophication: time to adjust expectations. Science 324: 724-725.

Conley, D.J., H.W. Paerl, R.W. Howarth, D.F. Boesch, S.P. Seitzinger, K.E. Havens, C. Lancelot and G.E. Likens. 2009. Controlling eutrophication: nitrogen and phosphorus. Science 323: 1014-1015.