Florida Fish & Wildlife Red Tide Status: Friday, December 16, 2016
FWC released the Red Tide Status Report as of this afternoon.
Florida Fish & Wildlife Conservation Commission red tide bulletin at 2:50 PM 12/16/2016.
Red Tide Status (December 16, 2016)
“A bloom of the Florida red tide organism, Karenia brevis, persists in Southwest Florida from southern Pinellas County to Lee County.
Over the past week, Karenia brevis was observed in background to medium concentrations in seven samples collected from Pinellas County; background concentrations in one sample collected from Hillsborough County; very low to high concentrations in eight samples collected from Manatee County; very low to high concentrations in twenty samples collected from Sarasota County; medium concentrations in five samples collected from Charlotte County; background to medium concentrations in seventeen samples collected from Lee County; and background concentrations in one sample collected from Collier County.
One sample collected from Okaloosa County (Northwest Florida) contained background concentrations of K. brevis. Additional samples collected throughout Florida over the past week did not contain K. brevis.
Fish kills affecting multiple species have been reported along Pinellas, Manatee, Sarasota, and Charlotte counties over the past week. Slight respiratory irritation has been reported in some areas of Sarasota County over the past week. Forecasts for Southwest Florida by the USF-FWC Collaboration for Prediction of Red Tides show net southern movement of surface waters, and net southern, onshore movement of subsurface waters between southern Pinellas and northern Monroe counties over the next 3 days.
Red tide is a naturally-occurring microscopic alga that has been documented along Florida’s Gulf Coast since the 1840’s and occurs nearly every year. Blooms, or higher-than-normal concentrations, of the Florida red tide alga, Karenia brevis, frequently occur in the Gulf of Mexico at this time of year (late summer or early fall). Red tide begins in the Gulf of Mexico 10 to 40 miles offshore and can be transported inshore by winds and currents.”
Key for Results
|Description||Karenia breviscells/liter||Possible Effects (K. brevis only)|
|NOT PRESENT – BACKGROUND||background levels of 1,000 cells or less||None anticipated|
|VERY LOW||>1,000 to 10,000||Possible respiratory irritation; shellfish harvesting closures > 5,000 cells/L|
|LOW||>10,000 to 100,000||Respiratory irritation, possible fish kills and bloom chlorophyll probably detected by satellites at upper limits|
|MEDIUM||>100,000 to 1,000,000||Respiratory irritation and probable fish kills|
|HIGH||>1,000,000||As above plus discoloration|
For more information, please see FWC.