General Information

Event name: NL-10-001
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Dinophysis acuminata
Report the outcome of a monitoring programme: Yes (National Shellfish Monitoring)
Event occurred before in this location: Yes (Annual-Bi annual occurence)
Individuals to contact: POELMAN, Marnix

Location & Date

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Location: Latitude: 51.763056, Longitude: 3.965833
General location information: Lake Grevelingen, South West
HAB Area code(s): NL-03
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2010-07-27
Start: 2010-06-23, End: 2010-08-17
Quarantine levels dates (yyyy/mm/dd): First detection: 2010-07-27, End: 2010-08-19
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (370 cells/L)
Range 110-370 c/l
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Cloudy Turbidity (NTU): Wind direction: SW
Stratified water: Yes Oxygen content (nL/L): Wind velocity: 3
Temperature (°C): 19.9 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: 20.6 °C, Min: 19.1 °C
Salinity Range During Event:
Bloom location in the water column: Whole column
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Oyster Okadaic Acid
Kit used: Type of kit used:
Additional information: No positive animal assays found.
Economic losses: Temporal administrative measures for the shellfish industry. Ma
Management decision:
Additional harmful effect information:
Created at 12:26 on 25 Mar 2015
Updated at 02:00 on 22 Feb 2018