General Information

Event name: DK-97-001
Country: DENMARK
Nature of the harmful event:
High Phyto concentration , 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: ANDERSEN, Per

Location & Date

Location: Latitude: , Longitude:
General location information: Western and southern part Kattegat,
HAB Area code(s):
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 1997-08-01, End: 1997-09-30
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: August-September

Microalgae

Causative organism known: Yes
Causative Species/Genus: Prorocentrum minimum ( cells/L)
Gyrodinium aureolum ( cells/L)
Western and southern part Kattegat
Skeletonema costatum ( cells/L)
Rhizosolenia fragilissima ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Relatively low phytoplankton biomasses and concentrations were registered in most of the summer period . Blooms of dinoflagellates were observed.
Event-related bibliography:

Environmental Conditions

Weather: very warm and calm summer 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:

Toxin Assay 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: Fishkills and kills of benthic invertebrates which were caused by G. aureolum.
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES