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A patchy bloom of the Florida red tide organism,Karenia brevis, persists in Southwest Florida.
In Southwest Florida over the past week, K. breviswas observed at background concentrations in one sample collected from Manatee County, background to medium concentrations in 13 samples collected from Sarasota County, low to medium concentrations in three samples collected from Charlotte County, background to low concentrations in eight samples collected from Lee County, and background to medium concentrations in four samples collected from Collier County.
Additional samples collected throughout Florida over the past week did not contain K. brevis.
Over the past week, fish kills were reported in Southwest Florida in Manatee County (Manatee Public Beach), in Sarasota County (Casey Key, Manasota Beach, Nokomis Beach, Siesta Key Beach, Venice Beach, Venice North Jetty), in Charlotte County (Englewood Beach, Gasparilla Pass, Lemon Bay), in and offshore of Lee County (Boca Grande Pass, Gasparilla Island, Captiva Beach) and in Collier County (Marco Island).
Respiratory irritation was reported over the past week in Sarasota County (7/3 and 7/10 at Lido Key; 7/3-7/7 and 7/11 at Manasota Beach; 7/3-7/4 and 7/6-7/7 at Nokomis; 7/9 at Siesta Key, 7/3-7/7, 7/9 and 7/11 at Venice Beach; 7/3-7/4 and 7/6-7/7 at Venice North Jetty), Lee County (7/10 at Gasparilla Island Range Lighthouse; 7/7 at Gasparilla Island State Park), and Collier County (7/7 and 7/9-7/10 at South Marco Beach).
Forecasts by the USF-FWC Collaboration for Prediction of Red Tides for Pinellas to northern Monroe counties predict variable surface currents with net southern movement for most areas, and southern, onshore transport of subsurface waters over the next three days.
Additional information regarding the current status of algal blooms in South Florida is being consolidated and posted on the Florida Department of Environmental Protection’s website:https://floridadep.gov/dear/algal-bloom.
This information, including maps and reports with additional details, is also available on the FWRI Red Tide website. The website also provides links to additional information related to the topic of Florida red tide including satellite imagery, experimental red tide forecasts, shellfish harvesting areas, the FWC Fish Kill Hotline, the Florida Poison Information Center (to report human health effects related to exposure to red tide), and other wildlife related hotlines.
To learn more about various organisms that have been known to cause algal blooms in Florida waters, see the FWRI Red Tide Flickr page. Archived status maps can also be found on Flickr.
The FWRI HAB group in conjunction with Mote Marine Laboratory now have a Facebook page. Please like our page and learn interesting facts concerning red tide and other harmful algal blooms in Florida.