General Information

Event name: US-94-014
Country: UNITED STATES
Nature of the harmful event:
Water Discoloration , Mass mortalities
Event directly affected:
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (Previous bloom and fish kill very similar to the 1994 event reported in Harper, D.E. Jr. & G. Guillen. 1989. Occurrence of a dinoflagellate bloom associated with an influx of low salinity water at Galveston, Texas and coincident mortalities of demersal fish and benthic invertebrates. Contributions in Marine Science 31: 147-161.)
Individuals to contact: DORTCH, Quay

Location & Date

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Location: Latitude: , Longitude:
General location information: , Louisiana.
HAB Area code(s): US-17
Additional location information: Louisiana shelf adjacent to Sabine Pass.
Bloom event dates (yyyy/mm/dd): Event Date:1994-06-22
Start: 1994-06-22,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: 22 June (may have been occurring for more than a month prior to this date).

Microalgae

Causative organism known: Yes
Causative Species/Genus: Gymnodinium sanguineum (5,400,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Surface water samples.
Event-related bibliography: Marine Science 31: 147-161.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): 29.8 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 12 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 Not known.
Additional Environmental information: 15.4 ppm .

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: None in Louisiana. Texas Department of Parks and Wildlife collected samples for identification and environmental conditions and NOAA, NMFS held a workshop to consider relationship between algal bloom, fish kills, and turtle and marine mammal deaths.
Additional harmful effect information: Effect: Discolored water. A fish kill in Louisiana waters was described by the Texas Department of Parks and Wildlife, but there are no data from Louisiana monitoring agencies.
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES