Harmful Algal Information System: Event NO-89-003

General Information

Event name:	NO-89-003
Country:	NORWAY
Nature of the harmful event:	Mass mortalities
Event directly affected:
Toxicity detected:	No
Associated syndrome:	OTHER
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:	JOHNSEN, Torbjorn M.

Location & Date

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Location:	Latitude: , Longitude:
General location information:	The Sandsfjord system, WESTERN COAST HAB Area code(s): NO-09
Additional location information:	Ryfylke, Rogaland.
Bloom event dates (yyyy/mm/dd):	Start: 1989-07-01, End: 1989-09-30
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	July - September

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Prymnesium parvum (2,300,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
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: 18 °C, Min: 12 °C

Salinity Range During Event:

Max: 9, Min: 4

Bloom location in the water column:

Growth:

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:

Inside the fjord system: Movement of fish cages from brackish to marine environment. Outside the fjord system: Pumping of deep water to prevent toxic brackish water moving into the fish cages.

Additional harmful effect information:

Updated at 02:24 on 5 Mar 2018