General Information

Event name: US-13-011
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Foam/Mucilage in the coast
Event directly affected:
Planktonic life , Natural Fish , Other Terrestrial , Shellfish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (FWC/FWRI HAB Monitoring Program)
Event occurred before in this location: Yes (Aureoumbra lagunensis bloom occurred (for the first time) in this area in 2012. Pedinophyceae blooms in this region first reported 2011.)
Individuals to contact: SCOTT, Paula

Location & Date

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Location: Latitude: , Longitude:
General location information: Indian River Lagoon System: Volusia and Brevard counties,
HAB Area code(s): US-15
Additional location information: Lagoon system: 70 miles n to s, 11 miles w to e
Bloom event dates (yyyy/mm/dd): Start: 2013-04-08, End: 2013-11-13
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: no established quarantine levels


Causative organism known: Yes
Causative Species/Genus: Aureoumbra lagunensis (489,280,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): 7.2 Wind velocity:
Temperature (°C): 27.3 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 42.0 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: 31.8 °C, Min: 21.1 °C
Salinity Range During Event: Max: 42.4, Min: 22.8
Bloom location in the water column: Whole column
Growth: Advected
In situ
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: The Aureoumbra lagunensis bloom is affecting recovery, equating to $235-$479M/yr. that the seagrass remains absent; decline of shellfish resources, namely juvenile northern hard clams and eastern oysters
Management decision: NOAA Harmful Algal Event Response program has provided event response funding to researchers at Stony Brook Univ. to further investigate this bloom.
Additional harmful effect information:
Created at 03:06 on 7 Jan 2015