General Information

Event name: DE-97-006
Country: GERMANY
Nature of the harmful event:
Water Discoloration
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: ELBRÄCHTER, Malte

Location & Date

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Location: Latitude: , Longitude:
General location information: North Frisian coast off Sylt., North Sea.
HAB Area code(s): DE-03
Additional location information: Beaches off Sylt, Schleswing-Holstein. The blooms was restricted to the beach, it extended only about 20m from the beach parallel to the coast over about 15 Km.
Bloom event dates (yyyy/mm/dd): Start: 1997-07-18, End: 1997-08-25
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Minutocellus pseudopolymorphus (20,000,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: Up to 20 µg dm(-3) Chlª. µg/l
Additional bloom information: Diatom Fam. Cymatosiraceae: Minutocellus pseudopolymorphus Hasle, von Stosch & Syvertsen.
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): 0.5 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: Surfzone, only about 20 m broad parallel to the sandy beach, about 15 km long up to 20,000,000 cells/L;

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information: Chemical analysis by HPLC revealed no PSP, DSP or ASP toxins (Prof. Luckas, Jena).
Economic losses:
Management decision: None.
Additional harmful effect information:
Updated at 05:18 on 15 Apr 2015
Checked at 05:19 on 15 Apr 2015