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General Information

Event name: US-92-009
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 (Common bloom producer in the bay.)
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: 1992-09-08, End: 1992-09-09
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Gymnodinium nelsonii (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): > 23 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: < 22 Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth:
In situ
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: Surveillance.
Additional harmful effect information: Water discoloration.
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES