Research Spotlight

Red Tide Event Response

The red tide blooms in Florida this year have gained not only a full response from local and state resources, but a national spotlight from news media across the country. As of this writing, there are three separate blooms affecting the Panhandle, Southwest Florida, and the Atlantic Coast. Over 10,000 water samples later, FWRI and FWC continues to respond to one of the most severe and widespread blooms of Karenia brevis in recent years.

FWRI’s new red tide map updates daily, automatically populating the interactive map with red tide data from the last 8 days of sampling. Our new map has been well received by the public and provides valuable data on a more immediate basis than our previous twice-weekly reports. This change illustrates FWRI’s commitment to providing the public with accurate, scientifically-verified data, and responding to public comment and criticism.

FWC field staff transporting a large adult female manatee rescued for red tide to rescue partner, Clearwater Marine Aquarium, who then transported the manatee to SeaWorld for rehabilitation.

FWRI’s Marine Mammal Stranding unit continues to be a crucial component for manatee rescue during these severe red tide blooms. Once a citizen calls in a stranded or distressed manatee to the Wildlife Alert Hotline, Marine Mammal Stranding responds to the incident and, depending on the location in the state, the manatee is then transferred to rehabilitation facilities. Manatees have had heavy losses related to red tide this year – at last count 182 manatees – but the number would be higher if not for the diligent efforts of the Marine Mammal Stranding team.

The Fish Kill Hotline continues to be a successful program, with concerned citizens reporting over 1,300 individual fish kills in Southwest Florida alone. Floridians across the state have assisted FWC in the monitoring – and in many cases assisting fish kill clean-up – of the red tide blooms with the Red Tide Offshore Monitoring Program.

Red tide response from FWRI extends to many levels of the organization, including Communications. In addition to answering inquiries from the public and press, Communications creates products such as infographics, press releases, newsletters, videos and more.

In addition to water sampling, FWC conducted flyovers with Law Enforcement aircraft Panther 1 in 5, 7 and 10 mile surveys along Pasco, Pinellas, Manatee and Sarasota counties on September 9th, 2018. These observations provided visual confirmation of blooms and provided researchers with visual data on fish kills, manatee mortalities and more. Observations from the 10 mile survey estimated that the bloom extended at least 15 miles offshore in some areas.

FWC’s research scientists conduct aerial surveys as part of red ride response.

Data is also gleaned from the Copernicus satellite program, which observes chlorophyll concentrations in surface waters. Satellite observations are not infallible, however, as cloud cover obscures observation capabilities.

Combining satellite and aircraft observations with extensive water-sampling data can begin to paint an accurate picture of the dynamic red tide blooms. Moore’s law shows us that technology is constantly improving, and so we hope to see increased precision in monitoring capabilities as time progresses. FWC hope to continue to embrace current and emerging technology to help better track, monitor and mitigate red tide blooms in Florida.