General Information

Event name: NL-02-003
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 (National Shellfish Quality Program)
Event occurred before in this location: Yes
Individuals to contact: POELMAN, Marnix

Location & Date

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Location: Latitude: , Longitude:
General location information: North Sea, Noordwijk transect 10km
HAB Area code(s): NL-02
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2002-06-20
Start: 2002-04-26, End: 2002-06-20
Quarantine levels dates (yyyy/mm/dd): First detection: 2002-06-01, End: 2002-06-03
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia fraudulenta ( cells/L)
Pseudo-nitzschia pungens (220000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Pseddu-nitzschia was counted on a species level. Later analyses proved the presence of P. fraudulenta and P. pungens
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Yes Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
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: