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Havens, Karl
Positions
- Faculty, School of Natural Resources and Environment , College of Agricultural and Life Sciences 2005 -
- Affiliate Professor, School of Natural Resources and Environment , College of Agricultural and Life Sciences 2005 -
- Faculty, College of Agricultural and Life Sciences , Institute of Food and Agricultural Sciences 2008 -
- Faculty, Florida Sea Grant , Office of the Provost and Senior Vice President for Academic Affairs 2008 -
research areas
Overview
Affiliation
home department
- Florida Sea Grant Center
member of
- Committee on Independent Scientific Review of Everglades Restoration Progress (National Academy of Science) Member 2015 -
- Advisory Council (Marine Life Center of Excellence) Member 2013 -
- Program Mission Committee (Sea Grant Association) Chair 2013 -
- UF Oyster Recovery Team Chair 2012 -
- Water Quality Team (Gulf of Mexico Alliance) Member 2011 -
- Gulf of Mexico, Community Resiliency Engagement Panel Member 2010 -
- Oil Spill Task Force (UF) Task Force Co-Chairman 2010 -
- External Relations Committee (Sea Grant Association) Member 2009 -
- Advisory Council (Ordway Swisher Biological Station) Member 2008 -
- Board of Directors (Florida Institute of Oceanography) Member 2008 -
- National Conference on Beach Preservation Planning Committee Member 2008 -
- Florida Oceans Alliance Member 2007 -
- Florida Oceans and Coastal Resources Council Member 2005 -
- Scientific Advisory Board (Korean Journal of Limnology) Member 1999 -
- American Association for Advancement of Science Member
- American Society of Limnology and Oceanography Member
- Ecological Society of America Member
- International Society for Theoretical and Applied Limnology Member
- North American Lake Management Society Member
- Gulf Consortium (Florida Association of Counties) Evaluation Team 2014
- Scientific Committee (8th International Conference on Shallow Lakes, Turkey) 2014
- Search Committee for the Dean for Extension (UF/IFAS) Member 2012
- Sea Grant Association Secretary 2009 - 2012
- Downward Trend Research Review Panel Chair 2011
- Search Committee, Director of Florida Institute of Oceanography Member 2010
- Search Committee, Quantitative Fisheries Scientist (UF/IFAS) Member 2010
- National Review Panel (John Knauss Marine Policy Fellowship) Member 2009
- Florida Board of Governors, Marine Science Steering & Review Committee Member 2008
- Research and Publications Metrics Task Force (UF/IFAS) Member 2007
- Search Committee, Director, Florida Sea Grant College Program Chair 2007
- Search Committee, Associate Dean for Graduate Programs, College of Agricultural and Life Sciences Chair 2006
- Search Committee, Associate Dean for Undergraduate Programs, College of Agricultural and Life Sciences Chair 2006
- State of Florida Nutrient Criteria Technical Advisory Committee Member 2002 - 2006
- Grants Development Committee, UF/IFAS Member 2005
- Search Committee, Water Institute Director Member 2005
- Sigma Xi (South Florida Water Management Chapter) President 1999 - 2004
Publications
selected publications
collection or series editor for
- 2015 -
- Journal of Plankton Research (Journal) 2014 -
- Journal of Plankton Research (Journal) 2014 -
- 2009 -
- 2007 - 2013
- 2000 - 2007
- 1992 - 2007
presentations
-
presentation
- Climate variability and cyanobacterial bloom dynamics in subtropical shallow lakes, International Conference on Shallow Lakes 2017
- A green summer in south Florida, Friends of Weedon Island Preserve 2016
- Rising Seas, Florida Sea Grant Science Café 2015
- Community and academic partnerships support resiliency and restoration efforts in the Gulf of Mexico after the Deepwater Horizon Oil Spill, National Shellfisheries Association 2014
- Apalachicola Bay oyster decline 2012 – evaluating effects of harvesting, river flow, drought and predation, UF Conference on Sustainability 2013
- Apalachicola Bay oyster situation report 2013
- Community and academic partnerships in Franklin County Florida: Seafood workers and University of Florida, National Institute of Environmental Health Studies Conference 2013
- Lake Okeechobee: hydrological and ecological responses to a possible 2060 climate scenario, H.T. Odum Center for Wetland Studies 2013
- Sea Grant in the Gulf of Mexico: addressing issues in the Gulf with applied research, education and outreach, National Academies’ Gulf of Mexico Research Panel 2013
- Results of 30 years of watershed phosphorus management, in regard to the trophic state of Lake Okeechobee, USA, Fourth International EcoSummit on Ecological Sustainability 2012
- Climate change and sea level rise in Florida, Governor’s Commission on Energy and Climate 2011
- Climate change and sea level rise in Florida: An update on the effects of climate change on Florida’s ocean and coastal resources, Florida Environmental Resource Agencies 2011
- Gulf of Mexico Sea Grant Programs: perspectives on impacts and future needs related to the Deep Water Horizon oil spill, Coastal and Estuarine Research Federation 2011
- Gulf of Mexico hydrological restoration identification and prioritization project, Coastal and Estuarine Research Federation 2011
- Monitoring zooplankton assemblages and water quality to identify environmental reservoirs for Vibrio cholera in the Gressier Region, Haiti, Global Health Professional Workshop 2011
- Causes and consequences of toxic blue-green algal blooms, Sol and Leslie Brotman Family Lecture Series 2010
- Climate change and restoration of the Florida Everglades, Greater Everglades Ecosystem Restoration Conference 2010
- Deepwater Horizon oil spill results in rapid research needs assessment and inventory, Bays and Bayous Symposium 2010
- Florida Sea Grant - Program overview and activities related to climate change, National Shore and Beach Preservation Society 2010
- Impacts of hurricanes on shallow lakes - light limitation as a major driver of changes in food web structure 2010
- Integrating the impact of climate change into policy, planning and implementation of Everglades restoration, Panel Discussant, Greater Everglades Ecosystem Restoration Conference 2010
- The Deepwater Horizon oil spill - effects on the Gulf of Mexico 2010
- The effects of climate change on Florida’s ocean and coastal resources, St. Johns River Alliance 2010
- Florida Sea Grant College Program, Gainesville Kiwanis Club 2009
- Hurricane impacts on plankton dynamics in subtropical lakes, Department of Fisheries and Aquatic Sciences, University of Florida 2009
- Long-term monitoring of the phytoplankton community of Lake Okeechobee Florida: importance of drought conditions and climactic perturbations, North American Lake Management Society 2009
- Under the sea with Florida Sea Grant, National Shore and Beach Preservation Society 2009
- Florida Sea Grant College Program, Gainesville Rotary 2008
- Ecological effects of cyanobacteria blooms. US-China Workshop on Harmful Cyanobacteria Blooms 2007
- Long-term changes in the zooplankton of a subtropical lake: evidence of an altered predation regime, Florida Lake Management Society 2007
- Cyanobacterial blooms: impacts on aquatic ecosystems 2006
- Cyanobacterial blooms: impacts on aquatic ecosystems 2006
- Toxic cyanobacteria blooms: speculation, facts and unanswered questions, Florida Lake Management Society 2006
- Ecological impacts of cyanobacteria blooms, International Symposium on Cyanobacterial Harmful Algal Blooms 2005
- Synchronized zooplankton maxima in six subtropical lakes, American Society of Limnology and Oceanography 2005
- Rapid changes in vegetation and water quality in Lake Okeechobee: response to a drawdown and subsequent drought, International Ecological Society (INTECOL) 2004
- Establishing expectations regarding plankton food web responses to reduced nutrient loading, Workshop on Long-Term Lake Response to Reduced Nutrient Loading 2003
- Lake Okeechobee, Florida: ecosystem overview and responses to hurricane winds and water level variations, National Environmental Research Institute 2003
- Phosphorus dynamics at multiple time scales in a large shallow lake 2003
- Development and application of hydrologic restoration goals for a large subtropical lake 2002
- N:P ratios, light limitation, and cyanobacteria dominance in a subtropical eutrophic lake 2002
- Mapping and modeling dynamics of submerged aquatic vegetation in large shallow lakes, Ecological Society of America 2001
- The rehabilitation of Lake Okeechobee 2000
- Unexpected responses in ecosystem restoration - a case study of submerged plants, turbid water, and a strong wind event at Lake Okeechobee, Florida, Greater Everglades Ecosystem Restoration Science Conference 2000
- Carbon flux through the planktonic food web of Lake Okeechobee, Florida, USA 1999
- Cost analysis and management implications of real and perceived environmental problems: berm formation in Lake Okeechobee as an example 1999
- Declines in transparency related to mud sediment expansion in Lake Okeechobee 1999
- Littoral periphyton responses to nitrogen and phosphorus: an experimental study in a subtropical lake 1999
- Nutrient-chlorophyll-transparency relationships in lakes Okeechobee and Apopka 1999
- Phosphorus cycling among periphyton and plankton in a shallow subtropical lake 1999
- Quantifying structure and function of aquatic food webs 1998
- Spatial variation in food web structure and function in a large, shallow subtropical lake (Lake Okeechobee, Florida, USA), International Association of Theoretical and Applied Limnology XXVII Congress 1998
- Correlation vs. causation: case studies from Florida lakes 1997
- Cyanobacteria dominance vs. light in shallow turbid lakes 1997
- Lake Okeechobee conceptual model 1997
- Long-term ecological research program for Lake Okeechobee, Florida, USA, East Asia-Pacific Conference of International Long-Term Ecological Research 1997
- Minimum water level criteria for Lake Okeechobee, Florida 1997
- Carbon dynamics in the grazing food web of a large subtropical lake 1996
- Seasonal and spatial variation in zooplankton community structure and their relation to possible controlling variables in Lake Okeechobee 1995
- Spatial patterns of phytoplankton limiting factors in a subtropical lake undergoing cultural eutrophication, 6th International Conference on the Conservation and Management of Lakes 1995
- A preliminary characterization of the Lake Okeechobee (Florida, USA) food web 1994
- An analysis of chlorophyll-phosphorus-acidity relationships in temperate lakes using trophic state index deviations 1994
- Does high lake stage cause algal blooms in Lake Okeechobee? 1994
- Predator-prey interactions in the Lake Okeechobee food web 1994
- Using trophic state deviations to describe trends in particulate light attenuation in a large subtropical lake 1994
- Copper sulfate effects on the freshwater plankton, Great Lakes Aquatic Ecosystem Research Consortium Colloquium 1993
- Effects of a chemical stressor on pelagic food web function 1993
- Effects of a chemical stressor on pelagic food web function 1993
- Seasonal and spatial variation in nutrient limitation in a shallow sub-tropical lake (Lake Okeechobee, Florida): an analysis based on trophic state index deviations 1993
- The effects of two chemical stressors on the freshwater zooplankton: a mesocosm study 1993
- Trophic relations in pelagic food webs of varying diversity and complexity, International Workshop on Biodiversity 1993
- Acidification effects on the algal-zooplankton interactions 1992
- Acidification effects on the producer-herbivore interface in a freshwater plankton community 1992
- Aluminum effects on the survival of limnetic Cladocera at pH 4.5, 6.0 and 7.5 1992
- Fish effects on nutrient and plankton dynamics in a Lake Erie estuary, The International Association of Ecology, IV International Wetlands Conference 1992
- Macro and microzooplankton effects on the algal community of a eutrophic Ohio lake 1992
- Seasonal succession in the plankton of naturally acidic, highly humic lake 1989
- Plankton succession during acidification in high versus low aluminum level lakewater 1986
- Algal biomass response to acidification in a mesotrophic lake 1982
- Two small lakes with nitrate limitation of phytoplankton growth in enclosure experiments 1982
Research
research overview
-
- Factors controlling the structure and function of freshwater plankton, including eutrophication,
- Acidification, metal pollution, and exotic species invasion
- Interactions between plankton, periphyton, and aquatic plants in shallow lakes
- Predictive limnology and lake management of temperate, subtropical, and tropical lakes
- Lake and wetland ecosystem responses to stress, including excessive nutrient loading,
- Unnatural variations in water level, exotic species, and toxic chemicals
principal investigator on
- R/Ce-57 Research, Communication and Community Engagement Support for Apalachicola Bay Oyster Restoration and Manage.. awarded by Florida Fish and Wildlife Conservation Commission 2014 - 2019
- Sgep 16 on Campus Extension awarded by US Department of Commerce Sea Grant Program 2014 - 2018
- Sea Grant Population Dynamics Fellowship awarded by US Department of Commerce Sea Grant Program 2014 - 2017
- Gulf of Mexico Sea Grant College Programs Outreach to Support Gom Research Initiative Science Program awarded by Gulf of Mexico Alliance 2014 - 2016
- E/St-54_Fy 2015 Knauss Marine Policy Fellowship - Robert Ellis awarded by US Department of Commerce Sea Grant Program 2015 - 2016
- Fy 2015- Sea Grant Knauss Fellowship (Andrew Rubin) awarded by US Department of Commerce Sea Grant Program 2015 - 2016
- Revitalizing Hard Clam Aquaculture Industry in So.East awarded by US Department of Commerce Sea Grant Program 2013 - 2015
- Dep Regional Ocean Partnership Specialist awarded by Florida Department of Environmental Protection 2014 - 2015
- E/St-50, Knauss Fellowship T. Dolan awarded by US Department of Commerce Sea Grant Program 2013 - 2014
- E/St-51,Knauss Fellow E Ombres awarded by US Department of Commerce Sea Grant Program 2013 - 2014
- E/St-52, Knauss Fellowship: Rachel Silverstein awarded by US Department of Commerce Sea Grant Program 2013 - 2014
- Fsg-2013, Knauss Fellowship for A. Smentek-Duerr awarded by US Department of Commerce Sea Grant Program 2013 - 2014
- Fsg Extension Agent to Inform the Public About Protected Habitats awarded by Florida Department of Environmental Protection 2009 - 2013
- 2011 Nmfs-Sea Grant Fellowships in Population Dynamics awarded by US Department of Commerce Sea Grant Program 2011 - 2015
- Ex-Fwcc-12, Fwc/Fsg Sea Level Rise Planning Program awarded by US Department of Interior 2011 - 2014
- E/St-45 Julie Galkiewicz Fellowshio 2012 awarded by US Department of Commerce Sea Grant Program 2012 - 2014
- 2009 Nmfs / Fsg Marine Resource Econ Fellowship for Chris Kennedy : Biological Complexity and Economic Reality...... awarded by US Department of Commerce Sea Grant Program 2009 - 2012
- UF Law Enviromental and Land Use Law Programs Marine and Coastallaw:Policy Field Course awarded by US Department of Commerce Sea Grant Program 2006 - 2012
- E/St-43, K. Phillps Fsg Knauss Fellowship awarded by US Department of Commerce Sea Grant Program 2011 - 2012
- E/St-40, Tauna Rankin Fsg Knauss Felloship 2010 awarded by US Department of Commerce Sea Grant Program 2009 - 2012
- Kari Maclauchin Fl Knauss Felowship 2010 awarded by US Department of Commerce Sea Grant Program 2009 - 2012
- Gulf Oyster Industry Oyster Demand Adjustments to Alternative Consumer Education and Post Harvest Processes... awarded by US Department of Commerce Sea Grant Program 2008 - 2011
- Partial Funding of Faculty Position awarded by Florida Fish and Wildlife Conservation Commission 2006 - 2010
- National Sea Grant Jennifer Dupont-Fsg-Knauss Fellowship 2009 awarded by US Department of Commerce Sea Grant Program 2009 - 2010
- Aquaculture Flroida, Texas, California 2006 awarded by US Department of Agriculture Coop State Research Service 2006 - 2009
- Tropical Aquaculture Florida 2006 awarded by US Department of Agriculture Coop State Research Service 2006 - 2009
- Sus/Fsg 2004-2005 Implementation Plan Florida Sea Grant College Program Support awarded by US Department of Commerce Sea Grant Program 2002 - 2009
- Knauss Marine Policy Fellowship - Halter Est-34 awarded by US Department of Commerce Sea Grant Program 2007 - 2009
- Stream Fisheries Biology Faculty Positions awarded by Florida Fish and Wildlife Conservation Commission 2006 - 2008
- E/St-35 John A. Knauss Marine Policy awarded by US Department of Commerce Sea Grant Program 2007 - 2008
- Knauss Marine Policy Fellowship - Uyeda awarded by US Department of Commerce Sea Grant Program 2007 - 2008
- Partial Funding of Faculty Position awarded by Florida Fish and Wildlife Conservation Commission 2005 - 2006
- 2011 Nmfs-Sea Grant Fellowships in Population Dynamics. awarded by US Department of Commerce Sea Grant Program
- Development of a Research Plan for the South Atlantic Region awarded by US Department of Commerce
- Florida Sea Grant College Program Managment M/Pm-13 awarded by US Department of Commerce Sea Grant Program
- National Sea Grant Melanie Diamond King-Fsg-Knauss Fellowship 2009 awarded by US Department of Commerce Sea Grant Program
- Nmfs-Sea Grant Fellowship in Popular Dynamics awarded by US Department of Commerce Sea Grant Program
- Planning, Prioritizing, and Implementing Gulf of Mexico Regional Marine Research and Information Needs 2006 - 2011. awarded by US Department of Commerce Sea Grant Program
- Tropical Aquaculture Florida 2005 awarded by US Department of Agriculture Coop State Research Service
- Utilizing Erosion & Local Concerns As a Gateway to Hazard Mitlgation and Sea Level Rise Planning awarded by US Department of Commerce Sea Grant Program
co-principal investigator on
investigator on
other research activities
- Lionfish in the South Atlantic and Caribbean Regions Principal Investigator
- Research to Support Apalachicola Bay Oyster Restoration and Management Co-principal Investigator 2014 - 2018
- Gulf of Mexico Sea Grant Outreach to Support GoMRI Science Programs Principal Investigator 2014 - 2016
- National Sea Grant College Program Omnibus Award 2013 - 2016
- Framing sustainability for our nation’s fisheries. Principal Investigator 2011 - 2012
- National Sea Grant College Program Omnibus Award Principal Investigator 2009 - 2012
- Gulf of Mexico climate outreach: building a community of practice for long-term engagement with coastal communities Co-principal Investigator 2009 - 2010
- Funding of a faculty position in non-native fisheries biology Principal Investigator 2005 - 2009
- Funding of a faculty position in flowing water fisheries science Principal Investigator 2005 - 2007
- Review of hydroperiod and water depth effects on plants and biota in lake littoral zones Principal Investigator 2005
Teaching
teaching overview
-
Limnology, plankton ecology, lake management, aquatic ecosystem response to stress, primary and
secondary productivity
teaching activities
- FAS4933 Fall 2008 5657 FAS4933 Fall 2008 5657
- FAS4933 Fall 2009 5657 FAS4933 Fall 2009 5657
- FAS4933 Spring 2009 8464 FAS4933 Spring 2009 8464
- FAS4933 Spring 2010 8464 FAS4933 Spring 2010 8464
- FAS6905 Spring 2011 6884 FAS6905 Spring 2011 6884
- FAS6932 Spring 2010 8871 FAS6932 Spring 2010 8871
- FAS6971 Fall 2008 2197 FAS6971 Fall 2008 2197
- FAS6971 Spring 2010 4893 FAS6971 Spring 2010 4893
- FAS6971 Spring 2011 4893 FAS6971 Spring 2011 4893
- FAS6971 Summer 2010 4843 FAS6971 Summer 2010 4843
- FAS7979 Fall 2008 2198 FAS7979 Fall 2008 2198
- FAS7979 Fall 2009 2198 FAS7979 Fall 2009 2198
- FAS7979 Spring 2010 4898 FAS7979 Spring 2010 4898
- FAS7980 Fall 2008 5184 FAS7980 Fall 2008 5184
- FAS7980 Fall 2009 5184 FAS7980 Fall 2009 5184
- FAS7980 Fall 2010 5184 FAS7980 Fall 2010 5184
- FAS7980 Fall 2010 6995 FAS7980 Fall 2010 6995
- FAS7980 Fall 2011 2324 FAS7980 Fall 2011 2324
- FAS7980 Spring 2011 4903 FAS7980 Spring 2011 4903
- FAS7980 Summer 2011 7935 FAS7980 Summer 2011 7935
- WIS6971 Fall 2008 6591 WIS6971 Fall 2008 6591
- WIS7979 Fall 2008 6593 WIS7979 Fall 2008 6593
- WIS7980 Fall 2009 6594 WIS7980 Fall 2009 6594
- WIS7980 Spring 2009 3333 WIS7980 Spring 2009 3333
- WIS7980 Summer 2009 9087 WIS7980 Summer 2009 9087
Service
organizer of event
- Sea Grant Week 2014 2014
professional service activities
- Case studies of shallow lake restoration (International Conference on Shallow Lakes) Chair 2017
- Management recommendations for Everglades restoration in the context of potential future climate changes Chair 2014
- Predicting ecological changes in the Florida Everglades in a future climate scenario Chair 2013
- Climate Change, Sea level rise and natural hazards – the built environment. Greater Everglades Ecosystem Restoration Conference Chair 2010
- Climate change – happenings in Washington (Extension Professional Associations of Florida) Chair 2009
- Limnology of tropical and subtropical lakes Chair 2005
- Linking science with management of freshwater systems Chair 2002
- Challenges in the rehabilitation of shallow eutrophic lakes Chair 2000
- Competitive interactions between planktonic and attached algae in shallow aquatic ecosystems Chair 1999
- Shallow lake research and management Chair 1999
- State-of-art research and modeling of nutrient impacts on ecosystems Chair 1998
- Long-term research on aquatic ecosystems Chair 1995
Background
education and training
- Ph.D. in Biology, West Virginia University
- M.S. in Biology, West Virginia University 1981
- B.A. in Biology, State University of New York Buffalo 1979
awards and honors
Contact
full name
- Karl Havens
- Karl E Havens
- Karl Havens
- Karl E Havens
- Karl E Havens
- Karl E Havens
primary email
- khavens@ufl.edu
mailing address
phone
- (352) 392-5870
fax
- (352) 392-5113
Publications in VIVO
Co-author Network
Map of Science
Co-investigator Network
- Contact Info
- (352) 392-5870