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General Information

Event name: US-09-006
Country: UNITED STATES
Nature of the harmful event:
 Water Discoloration , High Phyto concentration
Event directly affected:
 Other Terrestrial
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Va. Dept. Health, Va. Dept. Environmental Quality)
Event occurred before in this location: No
Individuals to contact: MARSHALL, Harold G.

Location & Date

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Location: Latitude: 37.016389, Longitude: -76.204444
General location information: lower Chesapeake Bay, Chesapeake Bay
HAB Area code(s): US-10
Additional location information: located off mouth of the James River
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2009/09/16,
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Alexandrium monilatum (256 cells/L)
dinoflagellate
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: low cell concentration, cells mainly in surface waters, extended length of series of attached cells
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:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Subsurface
Growth: Advected
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:
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES