General Information

Event name: NL-01-001
Nature of the harmful event:
High Phyto concentration , Mass mortalities
Event directly affected:
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: POELMAN, Marnix

Location & Date

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Location: Latitude: 51.658056, Longitude: 3.749444
General location information: Hammen, Oosterscheldt
HAB Area code(s): NL-03
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2001-05-10
Start: 2011-04-22, End: 2011-05-13
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: No end,


Causative organism known: Yes
Causative Species/Genus: Phaeocystis globosa (76000000 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: N
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 28 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event: Max: 29.3, Min: 28
Bloom location in the water column: Whole 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: High economic losses due to mortality in benthic mussel culture. These were associated with the Phaeocystis bloom, however proof was not given.
Management decision: The mussel plots were temporarily closed, due to the potential of shellfish disease. Once analyses validated absence of disease the plots were re-opened.
Additional harmful effect information:
Created at 02:56 on 26 Mar 2015
Updated at 01:58 on 22 Feb 2018