General Information

Event name: CA-06-006
Country: CANADA
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Mass mortalities
Event directly affected:
Aquaculture Fish
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Harmful Algae Monitoring Program)
Event occurred before in this location: Yes
Individuals to contact: HAIGH, Nicky

Location & Date

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Location: Latitude: 49.630000, Longitude: -123.799722
General location information: Lower Strait of Georgia, Pacific Region
HAB Area code(s): CA-37
Additional location information: Bloom covered all of Salmon Inlet and some of Sechelt Inlet. Bloom showed a strong vertical diurnal migration
Bloom event dates (yyyy/mm/dd): Event Date:2006-09-21
Quarantine levels dates (yyyy/mm/dd): First detection: 2006-09-21,
Additional date-related information: Bloom lasted ~ 2 weeks


Causative organism known: Yes
Causative Species/Genus: Heterosigma akashiwo (3,000,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: heavy rain overnight on sept 19th, followed by sunshine Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): 8.4mg/L@1m, 5.7mg/L@5m, 4.6mg/L@10m Wind velocity: 0
Temperature (°C): 12.7@1m, 12.6@5m, 11.9@10m Oxygen saturation %: Current Direction:
Sechhi disk (m): 5 Salinity: 21@1m, 23@5m, 25@10m Current Velocity: slack
Nutrient information:
Temperature Range During Event: Max: 13.7@1m °C, Min: 11.7@10m °C
Salinity Range During Event: Max: 25@10m, Min: 21@1m
Bloom location in the water column: Whole column
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:
Updated at 02:05 on 16 Feb 2018