Nutrients and Red Tide in Florida: State of the Science Symposium

Florida Sea Grant (FSG) and The University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS) are pleased to convene a Nutrients and Red Tide in Florida: State of the Science Symposium. With funding by Florida Fish and Wildlife Conservation Commission’s (FWC) Fish and Wildlife Research Institute’s Harmful Algal Bloom Grant Program and at the request of the Harmful Algal Bloom (HAB) Task Force, this 2.5 day symposium will occur April 21-23, 2025, at the University of South Florida, St. Petersburg campus. Day one of the Symposium will begin at 1:00 pm to allow participants to travel after the Easter Holiday.

Symposium Topics

  • Nutrient Dynamics across Bloom Stages
  • Tracking Nutrients through Systems
  • Management and Response 

The purpose of this invitation-only symposium is to assess the current state of knowledge, to share updates on new findings and ongoing efforts, and to guide future management and research priorities addressing nutrients and red tide. 

Objectives:

  • Encourage interdisciplinary collaboration and dialogue
  • Synthesize the current state of knowledge and efforts and identify gaps regarding the role and contribution of nutrients in red tide events
  • Identify and prioritize short- and long-term research needs and strategies 
  • Identify connections to local, regional, and state management policy interventions

A symposium white paper will be developed with the information generated during the 2.5-day symposium. The white paper will be used to inform Florida’s Harmful Algal Bloom Task Force and guide the state’s Harmful Algal Bloom Grant Program. The symposium will also be a great opportunity for networking within the Karenia brevis red tide professional community.

Symposium Team

Chair – Lisa Krimsky, UF/IFAS and Florida Sea Grant

Co-Chair – Betty Staugler, Florida Sea Grant

Facilitator – Joy Hazell, UF/IFAS and Florida Sea Grant

 
Steering Committee (SC) & Technical Advisory Committee (TAC) Members

Meghan Abbott, FWC-Fish & Wildlife Research Institute (SC)

Kristen Buck, Oregon State University & University of South Florida (SC)

Yesenia Escribano, Florida Department of Agriculture and Consumer Services (SC)

Emily Hall, Mote Marine Laboratory (SC)

Katherine Hubbard, FWC-Fish & Wildlife Research Institute (TAC)

Nicole Iadevaia, Coastal & Heartland National Estuary Program (SC)

Angela Knapp, Texas A & M University (TAC)

Yonggang Liu, University of South Florida (TAC)

Michael Parsons, Florida Gulf Coast University (TAC)

Mark Rains, Florida Department of Environmental Protection (FDEP)

Ed Sherwood, Tampa Bay Estuary Program (SC & TAC)

Rhonda Watkins, Collier County (SC)

David Whiting, Florida Department of Environmental Protection (SC)

Presentations
Session 1: Nutrient Dynamics across Bloom Stages
Synthesis Presentations
Nutrient Dynamic across Bloom Stages: A historical synthesis

Cynthia Heil, Mote Marine Laboratory and Kate Hubbard, Fish and Wildlife Research Institute, Florida Fish and Wildlife Conservation Commission

West Florida Shelf Nutrient and Isotopic Monitoring

Angela Knapp, TAMU College Station

Lighting Presentations
Karenia Nutrients in 5 Minutes

Pat Glibert, University of Maryland Center for Environmental Science

Nutrients and Carbonate Chemistry Associated with HABs

Emily Hall, Mote Marine Laboratory

From the Seabed: Coastal Groundwater, Submarine Groundwater, and Benthic Exchange

Christopher Smith, U.S. Geological Survey

Trace Metals

Salvatore Caprara, Oregon State University

Session 2: Tracking Nutrients through Systems
Synthesis Presentation
Tracking Nutrients through Systems: A synthesis

Chris Anastasiou, Southwest Florida Water Management District

Lighting Presentations
Tracking Nutrients through the Piney Point Discharge Event

Marcus Beck and Ed Sherwood, Tampa Bay Estuary Program

Red Tide Duration and Nitrogen Loads

David Tomasko, Sarasota Bay Estuary Program

Complexities of Tracking Nutrients on the West Florida Coast: Hurricanes and Upwelling Events

Yonggang Liu, University of South Florida

Session 3: Management and Response
Synthesis Presentations
Legislative Responses to Red Tide

Jon Paul “J.P.” Brooker, Ocean Conservancy

DEP’s Water Quality Restoration Program

David Whiting, Division of Environmental Assessment and Restoration, Florida Department of Environmental Protection

Lighting Presentations
FDACS Office of Agricultural Water Policy Agricultural Nutrient Management

Kathryn Holland, Office of Agricultural Water Policy, Florida Department of Agriculture and Consumer Services

Healing the Harbor: Nutrient mitigation strategies for an impaired estuary

Brandon Moody, Charlotte County Administration

Some Data Needs for Modeling Nutrient Loading Influence on Florida Karenia Blooms

Rick Bartleson, Sanibel Captiva Conservation Foundation

Effect of Decomposing Fish in Prolonging Red Tide Events

Michael Parsons, Florida Gulf Coast University

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