Data/hora: 06/06/2024 17:31:20

Provedor de dados: 	5	
País: 	France	
Título: 	Planktonic bioluminescence measurements in the frontal zone of Almeria-Oran (Mediterranean Sea)	
Autores: 	Cussatlegras, As; Geistdoerfer, P; Prieur, L.	
Data: 	2001-05	
Ano: 	2001	
Palavras-chave: 	Zone frontale; Mer d’Alboran; Bioluminescence du plancton; Frontal zone; Alboran Sea; Bioluminescent plankton.	
Resumo: 	Plankton bioluminescence measurements were made in the Almeria-Oran frontal zone during December 1997 and January 1998. Vertical profiles of bioluminescence, chlorophyll fluorescence, temperature and salinity were obtained using a bathyphotometer associated with a CTD (conductivity-temperature-depth) probe on a rosette. The first leg of the cruise was a regular sampling along a cross section of the area. The second leg consisted of a repetitive sampling of twelve stations at each one of the eight sites located in different water masses. Hydrological data allowed a distinction from north to south of three different water masses: Mediterranean, frontal and Atlantic. The continuous sampling indicated an increased bioluminescence in the frontal zone, with high values in the surface water and numerous light emissions as deep as 200 m. Mediterranean waters are characterized by an intense bioluminescence in the first 50 m with a maximum just above the thermocline and a few bioluminescent flashes above, whereas bioluminescence in Atlantic waters is evenly distributed from the surface to 130 m depth with no strong maxima. Inter-site bioluminescence variability is much greater than intra-site, demonstrating that bioluminescence profiles clearly reflect differences between hydrological areas. Bioluminescence is correlated with fluorescence at three out of the eight sites, suggesting a relative importance of chlorophyllian bioluminescent organisms. No direct correlation with temperature and salinity has been demonstrated, however, the thermocline is nearly always accompanied by an increased bioluminescent activity.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00322/43352/42861.pdf

DOI:10.1016/S0399-1784(01)01143-4

http://archimer.ifremer.fr/doc/00322/43352/	
Editor: 	Gauthier-villars/editions Elsevier	
Formato: 	application/pdf	
Fonte: 	Oceanologica Acta (0399-1784) (Gauthier-villars/editions Elsevier), 2001-05 , Vol. 24 , N. 3 , P. 239-250	
Fonte: 	2001 Ifremer/CNRS/IRD/Éditions scientifiques et médicales Elsevier SAS

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