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Closed Access item Potentially harmful microalgae in coastal waters of the Algiers area (Southern Mediterranean Sea)

Authors:Illoul, H.
Masó, Mercedes
Fortuño Alós, José Manuel
Cros, Lluïsa
Morales-Blake, Alejandro
Seridji, R.
Keywords:Algiers Harbour, Harmful algal booms (HAB), Southern Mediterranean, Holococcolithophora sphaeroidea
Issue Date:2008
Citation:Cryptogamie. Algologie 29(3): 261-278 (2008)
Abstract:A series of seasonal, monthly and short-term samplings was conducted in open and confined waters of the Algiers area in 2001-2002 and summer 2003 in order to detect potentially harmful microalgae species (HAB). A total of 14 potentially toxic and 18 bloom-forming species were recorded, of which some were found for the first time in Algerian coastal waters: the potential toxin producers Alexandrium minutum, Dinophysis sacculus (dinoflagellates) and Pseudo-nitzschia calliantha (diatom), as well as the bloom-forming species Lepidodinium chlorophorum (dinoflagellate), Cyclotella meneghiniana (diatom) and Holococcolithophora sphaeroidea (holococcolithophorid). The latter produced a very important bloom with considerable water discoulouration. The occurrence and duration of this event in the Algiers Harbour underline the importance of this enclosed structure as a growth area for HAB species. The transport of a H. sphaeroidea bloom toward off-shore waters by an anticyclonic eddy demonstrates the effect of Algerian current mesoscale instabilities on the spatial distribution of phytoplankton communities.
Description:18 pages,16 figures, 3 tables
Appears in Collections:(ICM) Artículos

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