General Information

Event name: US-92-022
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: No
Individuals to contact: OSTASZ, Michael J.

Location & Date

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Location: Latitude: 55.408333, Longitude: -131.725000
General location information: Ward Cove., Alaska.
HAB Area code(s): US-25
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:1992-09-13
Start: 1992-09-13,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: No
Causative Species/Genus: Noctiluca sp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Caustive species unknown - Suspect Noctiluca.
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 Comments
Additional Environmental information: Sample from 4 fathom environment.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Panope generosa (body & neck) Saxitoxins < 32 Bioassay-Mouse
Kit used: No Type of kit used:
Additional information: Geoducks: (Panope generosa) negative for PSP. (body and neck)
Economic losses:
Management decision: N/A uncertified area.
Additional harmful effect information: Red coloration to water.