General Information

Event name: CA-11-016
Country: CANADA
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome:
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: 49.770000, Longitude: -124.090000
General location information: Lower Strait of Georgia, Pacific Region
HAB Area code(s): CA-37
Additional location information: Heterosigma bloom was first seen in Vanguard Bay, Jervis Inlet on June 13; it was seen in Departure Bay on June 21st
Bloom event dates (yyyy/mm/dd): Event Date:2011-06-21
Quarantine levels dates (yyyy/mm/dd): First detection: 2011-06-13,
Additional date-related information: Bloom first seen June 13 in Jervis Inlet, and the first peak lasted 2-3 weeks. It later recurred through July in Departure Bay and in the Strait of Georgia.


Causative organism known: Yes
Causative Species/Genus: Heterosigma akashiwo (22 000 000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: This bloom was closely associated with 11-02 in the northern Strait of Georgia.
Event-related bibliography:

Environmental Conditions

Weather: overcast, air temp 20C Turbidity (NTU): Wind direction: E
Stratified water: Yes Oxygen content (nL/L): Wind velocity: light
Temperature (°C): 14.3@1m,12.5@5m, 12.2@8m Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 22@1m,25@5m, 26@8m Current Velocity:
Nutrient information:
Temperature Range During Event: Max: 19@1m °C, Min: 12.2@8m °C
Salinity Range During Event: Max: 26@8m, Min: 11@1m
Bloom location in the water column:
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:
Updated at 04:51 on 19 Sep 2013