General Information

Event name: FR-91-017
Country: FRANCE
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: Yes (1985 (3,000,000 cells/L)1986 (7,000,000)1988 (18,000,000))
Individuals to contact: SCHWEIBOLD Laura

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: North of Ré Island, Aiguillon Bay, Chetelaill, From Loire Estuary to Gironde Estuary.
HAB Area code(s): FR-09
Additional location information: Area 5.
Bloom event dates (yyyy/mm/dd): Start: 1991-09-10, End: 1991-09-11
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Gymnodinium sp. (186,000 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:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): 2.6 - 16 Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 20 °C, Min: 21 °C
Salinity Range During Event: Max: 36, Min: 35
Bloom location in the water column:
Growth: Advected
In situ
Growth Comments Probably both.
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:
Management decision: Continued surveillance.
Additional harmful effect information: Green water.
Updated at 01:51 on 3 Dec 2019
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES