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General Information

Event name: US-04-017
Country: UNITED STATES
Nature of the harmful event:
 High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
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:

Location & Date

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Location: Latitude: , Longitude:
General location information: Barataria Bay, Louisiana
HAB Area code(s): US-17
Additional location information: Tidal estuary with extreme salinity fluctuations
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: The species data below represent cell concentrations of HAB species above 10^5 cells/liter, with the exception of Prorocentrum which is reported at 10^4 and Anabaena spp. which are reported at 10^6. Cell concentrations were averaged over five stations in the esturary to generate an average concentration for each species on a single sample date. Data is from surface samples collected during routine sampling and were not associated with a particular bloom event.

Microalgae

Causative organism known: Yes
Causative Species/Genus: Anabaena sp. (38,932,147 cells/L)
Anabaena cf. Circinalis. Data collected: 1/21/2004
Anabaena sp. (8,781,332 cells/L)
Anabaena cf. Circinalis. Data collected: 2/16/2004
Anabaena spp. (1,293,916 cells/L)
Date collected: 3/22/2004
Anabaena sp. (1,259,571 cells/L)
Anabaena cf. Circinalis. Data collected: 3/22/2004
Planktolyngbya contorta (3,070,175 cells/L)
Date collected: 3/22/2004
Anabaena spp. (26,972,976 cells/L)
Date collected: 4/20/2004
Anabaena sp. (13,653,814 cells/L)
Anabaena cf. Circinalis. Data collected: 4/20/2004
Heterocapsa rotundata (134,257 cells/L)
Date collected: 5/19/2004
Prorocentrum minimum (15,631 cells/L)
Date collected: 5/19/2004
Anabaena sp. (3,500,460 cells/L)
Anabaena cf. Circinalis. Data collected: 7/20/2004
Anabaena spp. (5,883,575 cells/L)
Date collected: 7/20/2004
Heterocapsa rotundata (186,048 cells/L)
Date collected: 7/20/2004
Planktolyngbya contorta (4,834,743 cells/L)
Date collected: 7/20/2004
Raphidiopsis curvata (332,967 cells/L)
Date collected: 7/20/2004
Anabaena spp. (6,190,744 cells/L)
Date collected: 8/24/2004
Anabaena sp. (9,432,225 cells/L)
Anabaena cf. Circinalis. Data collected: 8/24/2004
Aphanizomenon sp. (2,142,817 cells/L)
Date collected: 8/24/2004
Planktolyngbya contorta (2,874,989 cells/L)
Date collected: 8/24/2004
Raphidiopsis curvata (432,036 cells/L)
Date collected: 8/24/2004
Heterocapsa rotundata (101,070 cells/L)
Date collected: 9/28/2004
Anabaena sp. (4,974,760 cells/L)
Anabaena cf. Circinalis. Data collected: 11/17/2004
Aphanizomenon sp. (3,082,520 cells/L)
Date collected: 11/17/2004
Planktolyngbya contorta (7,599,480 cells/L)
Date collected: 11/17/2004
Raphidiopsis curvata (191,048 cells/L)
Date collected: 11/17/2004
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): 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: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES