General Information

Event name: US-11-026
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome: NSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Fish and Wildlife Research Institute HAB Monitoring Program: Event Response)
Event occurred before in this location: Yes (1946, 1972, 1977, 1983, 1990, 1997, 1999, 2007)
Individuals to contact: SCOTT, Paula

Location & Date

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Location: Latitude: , Longitude:
General location information: East Florida coast (Monroe and Miami Dade counties), 4
HAB Area code(s): US-15
Additional location information: Atlantic Ocean: 60 miles N to S; 28 miles W to E. 25.6457 to 24.8202 N; 80.7565 to 80.08802 W
Bloom event dates (yyyy/mm/dd): Event Date:2011-12-11
Start: 2011-12-11,
Quarantine levels dates (yyyy/mm/dd): First detection: 2011-12-11,
Additional date-related information: possibly ongoing through 2011; no samples


Causative organism known: Yes
Causative Species/Genus: Karenia brevis (148,300 cells/L)
brevetoxin producer
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Foley, A., Stacy, B. A., Schueller, P., Flewelling, L. J., Schroeder, B., Minch, K., Fauquier, D. A., Foote, J. J., Manire, C., Atwood, K. E., Granholm, A. A., Landsberg, J. H., 2019. Assessing Karenia brevis red tide as a mortality factor of sea turtles in Florida. Dis. Aquat. Org. 132, 109124.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth: Advected
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information: no samples tested for toxins
Economic losses: None known
Management decision: No regulated shellfish harvesting areas in this bloom location; none required
Additional harmful effect information:
Updated at 08:12 on 29 Jul 2020
Checked at 01:38 on 15 Apr 2015