General Information

Event name: NL-92-014
Nature of the harmful event:
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
Event occurred before in this location: No
Individuals to contact: JOORDENS, J. C. A.

Location & Date

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Location: Latitude: 53.141667, Longitude: 4.125000
General location information: North Sea,
HAB Area code(s): NL-02
Additional location information: Terschelling transect and coastal stations T4 and T10.
Bloom event dates (yyyy/mm/dd): Event Date:1992-04-01
Start: 1992-04-01, End: 1992-09-30
Quarantine levels dates (yyyy/mm/dd): First detection: 1992-04-01, End: 1992-09-15
Additional date-related information: Spring and further.


Causative organism known: Yes
Causative Species/Genus: Phaeocystis sp. (10000000 cells/L)
Goeree April
Phaeocystis sp. (6,000,000 cells/L)
Terschelling coastal stations in spring.
Phaeocystis sp. (100,000 cells/L)
Terschelling off-shore stations in spring.
Phaeocystis sp. (1,000,000 cells/L)
Coastal Station T4 in summer.
Phaeocystis sp. (30000000 cells/L)
N2 Station April
Phaeocystis sp. (1,000,000 cells/L)
T4 and T10 Stations in summer.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Koeman, R & M. Rademaker, 1993. Biomonitoring van fytoplankton in de Nederlandse zoute en brakke wateren 1992. TRIPOS Rijswijk/Haren (in Duth with English summary). Rademaker, M & R. Koeman, 1993. Determinatie fytoplankton in het Nederlandse deel van de Noordzee en het Kanaal, Project Algenbloei 1992. Report North Sea derectorate (In Dutch). Peperzak, L, 1994. Plaagalgen in de Noorszee. Report DGW-93.053, National Institute fos coastal and Marine Management/RIKZ, The Haghe (in Dutch).

Environmental Conditions

Weather: 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:
In situ
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: None. 1992 was a high abundant Phaeocystis year.
Management decision: None.
Additional harmful effect information:
Updated at 06:50 on 16 Apr 2015