Harmful Algal Information System: Event DZ-03-001

General Information

Event name:	DZ-03-001
Country:	ALGERIA
Nature of the harmful event:	Water Discoloration , High Phyto concentration
Event directly affected:
Toxicity detected:	No
Associated syndrome:
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:	ILLOUL, Hassina

Location:	Latitude: 36.816667, Longitude: 3.233056
General location information:	Algiers Bay, Algiers Wilaya HAB Area code(s): DZ-06
Additional location information:	A yellowish discoloration occupied the whole Algiers bay (about 10 km wide) and the offshore waters (more than 100 km).
Bloom event dates (yyyy/mm/dd):	Event Date:2003-08-12 Start: 2003-08-01, End: 2003-08-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Causative organism known:	Yes
Causative Species/Genus:	Calyptrosphaera sphaeroidea (470 000 000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:	Satellite imagery (MOdis/Aqua)showed the offshore extension of the coccolithophore bloom advected by an anticyclonic eddy (AVHRR imagery)
Event-related bibliography:	Illoul, H., Masó, M., Fortuño, J-M, Cros, L., Morales-Blake, A. et Séridji, R. 2008. Potentially harmful microalgae in coastal waters of the Algiers area (Southern Mediterranean Sea). Cryptogamie Algologie. 29 (3) : 261-278.