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General Information

Event name: US-92-010
Country: UNITED STATES
Nature of the harmful event:
 Water Discoloration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (Frequent summer bloom species for this area.)
Individuals to contact: MARSHALL, Harold G.

Location & Date

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Location: Latitude: , Longitude:
General location information: Chesapeake Bay (Southern region)., Virginia.
HAB Area code(s): US-10
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 1992-07-06, End: 1992-08-11
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Ceratium furca (100,000 - 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): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 27 °C, Min: 22 °C
Salinity Range During Event: Max: 28, Min: 22
Bloom location in the water column:
Growth:
In situ
Growth Comments
Additional Environmental information: Greatest density along tidal fronts. Mean Mean Total Nitrogen: 0.192 mg/L. Mean Total Phosphorus: 0.250 mg/L

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: Surveillance.
Additional harmful effect information: Red water.
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES