General Information

Event name: NL-23-001
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 62-85 ug TTX /kg)
Associated syndrome: OTHER
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (National Shellfihs Toxin monitoring (SSO))
Event occurred before in this location:
Individuals to contact: POELMAN, Marnix

Location & Date

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Location: Latitude: 51.474167, Longitude: 4.147222
General location information: Eastern Scheldt, South West
HAB Area code(s): NL-03
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2023-06-19
Start: 2023-06-19, End: 2023-07-05
Quarantine levels dates (yyyy/mm/dd): First detection: 2023-06-21, End: 2023-07-07
Additional date-related information:


Causative organism known: No
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Good Turbidity (NTU): Wind direction: SW
Stratified water: No Oxygen content (nL/L): Wind velocity: 2
Temperature (°C): 21.5 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 30 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: 20.3 °C, Min: 21.5 °C
Salinity Range During Event:
Bloom location in the water column:
Growth: Advected
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: Closure of the area, indirect costs associated.
Management decision: Closure for harvest.
Additional harmful effect information:
Created at 00:00 on 30 Nov -1
Updated at 11:04 on 19 Apr 2024
Checked at 00:00 on 30 Nov -1