General Information

Event name: US-15-003
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins , Mass mortalities
Event directly affected:
Shellfish , Aquatic Mammals , Humans
Toxicity detected: Yes (Approximate range: >20MU)
Associated syndrome: NSP , Aerosolized toxins effects
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (NSSP- Alabama monitoring)
Event occurred before in this location: Yes (Near shore blooms of Karenia brevis documented in 1995-96, 2000, 2007, and 2015 affecting beaches and shellfish growing areas.)
Individuals to contact: DORSEY, Carol

Location & Date

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Location: Latitude: , Longitude:
General location information: Alabama Gulf Coast, Northern Gulf of Mexico
HAB Area code(s): US-16 US-17
Additional location information: 100mi
Bloom event dates (yyyy/mm/dd): Start: 2015-11-16, End: 2016-01-04
Quarantine levels dates (yyyy/mm/dd): First detection: 2015-11-16, End: 2016-01-04
Additional date-related information: 11/16/15- 01/04/16


Causative organism known: Yes
Causative Species/Genus: Karenia brevis (14000000 cells/L)
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 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:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 10:13 on 2 Feb 2017
Updated at 08:18 on 29 Jul 2020