Red tide continues to linger along Florida’s Gulf Coast, with high concentrations of the harmful algae Karenia brevis detected in multiple counties.
Over the past week, the Florida Fish and Wildlife Conservation Commission (FWC) has observed K. brevis in 98 samples collected from Southwest Florida. Bloom concentrations, exceeding 100,000 cells per liter, were found in 20 samples, primarily in Sarasota County, but also in Hillsborough, Manatee, Charlotte, Lee, Collier, and Monroe counties.
Scientists are utilizing satellite imagery to monitor the bloom’s movement. Recent images revealed offshore chlorophyll patches stretching from Charlotte to Monroe counties.
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A contiguous patch was located 3 to 10 miles offshore of Charlotte to Collier counties, with samples confirming the presence of K. brevis at bloom concentrations. Smaller, more diffuse patches were observed west of Monroe County and north of the Florida Keys.
The persistence of red tide is causing adverse effects:
- Fish Kills: Fish kills suspected to be related to red tide have been reported in Sarasota, Charlotte, Lee, Collier, and Monroe counties.
- Respiratory Irritation: Respiratory irritation, a common symptom of red tide exposure, has also been reported in these counties.
The FWC, in collaboration with the University of South Florida and the National Oceanic and Atmospheric Administration (NOAA), is monitoring red tide conditions and providing forecasts to inform the public about potential impacts.
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Current Status
- Southwest Florida: K. brevis was observed at varying concentrations in Pinellas, Hillsborough, Manatee, Sarasota, Charlotte, Lee, Collier, and Monroe counties.
- Northwest Florida: No K. brevis was observed.
- East Coast: No K. brevis was observed.
The FWC encourages the public to report fish kills and respiratory irritation suspected to be related to red tide. This information helps researchers track the bloom and assess its impacts.
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