Harmful Algal Information System: Event DK-95-002

General Information

Event name:	DK-95-002
Country:	DENMARK
Nature of the harmful event:	Mass mortalities
Event directly affected:	Shellfish
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:	ANDERSEN, Per

Location & Date

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Location:	Latitude: , Longitude:
General location information:	Limfjorden, Northern Coast. HAB Area code(s): DK-07
Additional location information:
Bloom event dates (yyyy/mm/dd):	Start: 1998-08-01,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	August

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Gyrodinium aureolum (2,800 cells/L) Gymnodinium sanguineum (144,000 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: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

Growth Comments

Additional Environmental information:

Oxigen deficiency period

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:

It has not benn solved wether the death was a result of intoxication or of oxygen depletion. However, coincidence of a G. sanguineum bloom and such an observation has already been observed in US.

Updated at 05:17 on 8 Sep 2019