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General Information

Event name: US-06-006
Country: UNITED STATES
Nature of the harmful event:
 High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (This area frequently sees high concentrations of the species listed in section 3 below)
Individuals to contact: RABALAIS, Nancy

Location & Date

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Location: Latitude: , Longitude:
General location information: Barataria Bay, Louisiana, Louisiana
HAB Area code(s): US-17
Additional location information: Tidal estuary with salinity fluctuations
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Species data represent cell concentrations of HAB species from surface samples collected during routine sampling for the period January - December 2006 and were not associated with a particular bloom event. Species are reported at 10^5 cells/liter, with the exception of Prorocentrum spp. which are reported at 10^3 and Anabaena spp. which are reported at 10^6. Cell concentrations were averaged over three stations in the lower estuary to generate an average concentration for each species on a single sample date.

Microalgae

Causative organism known: Yes
Causative Species/Genus: Prorocentrum minimum (3.91x10^3 cells/L)
1/11/2006
Prorocentrum scutellum (3.27x10^3 cells/L)
2/16/2006
Scrippsiella spp. (1.31x10^5 cells/L)
2/16/2006
Prorocentrum gracile (1.13x10^3 cells/L)
3/22/2006
Prorocentrum minimum (1.53x10^3 cells/L)
3/22/2006
Prorocentrum scutellum (1.71x10^4 cells/L)
3/22/2006
Prorocentrum minimum (1.33x10^3 cells/L)
5/3/2006
Prorocentrum minimum (1.96x10^3 cells/L)
9/6/2006
Heterocapsa rotundata (1.08x10^5 cells/L)
11/8/2006
Scrippsiella spp. (1.31x10^5 cells/L)
12/14/2006
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: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth:
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: