Harmful Algal Information System: Event FR-91-006

General Information

Event name:	FR-91-006
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 (In 1989 (510,000,000 cells/L).In 1990 (1,000,000 cells/L).)
Individuals to contact:

Location:	Latitude: , Longitude:
General location information:	Audierne Bay., SOUTHERN BRITTANY. HAB Area code(s): FR-07
Additional location information:	Area 4.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	April 11 and November 12.

Causative organism known:	Yes
Causative Species/Genus:	Chaetoceros armatum (26,240,000 cells/L) in November Chaetoceros armatum (4,840,000 cells/L) In April.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
Event-related bibliography:

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

In situ

Growth Comments

Probably in situ growth.

Additional Environmental information:

Temperature: 10.8� C (April), 12.5� C (November). Salinity: 32.4 � (April), 35� (November). Turbidity: 37.5 N.T.U. (April), 11 N.T.U. (November).

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-brown to brown water. A sheet about 500 m in April.

Updated at 12:22 on 3 Dec 2019