Harmful Algal Information System: Event US-90-020

General Information

Event name:	US-90-020
Country:	UNITED STATES
Nature of the harmful event:	High Phyto concentration
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:	HORNER, Rita

Location:	Latitude: , Longitude:
General location information:	Vancouver Island, B.C., throughout San Juan I, Washington. HAB Area code(s): US-24
Additional location information:	Pacific coast of Washington, Vancouver Island, B.C., throughout San Juan Islands.
Bloom event dates (yyyy/mm/dd):	Start: 1990-08-15, End: 1990-08-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	Mid to end of August.

Causative organism known:	Yes
Causative Species/Genus:	Gonyaulax spinifera (1,500,000 cells/L) in patches, formed cysts.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
Event-related bibliography:

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

Advected
In situ

Growth Comments

Probably both; occurred as huge, reddish brown patches that moved with tides, currents.

Additional Environmental 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:

Additional harmful effect information:

No harmful effects reported; fish growers worried about effect on net-pen fish.