Data/hora: 08/06/2024 14:46:17

Provedor de dados: 	5	
País: 	France	
Título: 	Characterising the surface microlayer in the Mediterranean Sea: trace metals concentration and microbial plankton abundance	
Autores: 	Tovar-sanchez, Antonio; Rodriguez-romero, Araceli; Engel, Anja; Zancker, Birthe; Fu, Franck; Maranon, Emilio; Perez-lorenzo, Maria; Bressac, Matthieu; Wagener, Thibault; Desboeufs, Karine; Triquet, Sylvain; Siour, Guillaume; Guieu, Cécile.	
Data: 	2019	
Ano: 	2019	
Resumo: 	The Sea Surface Microlayer (SML) is known to be enriched in trace metals relative to the underlaying water and to harbor diverse microbial communities (i.e. neuston). However, the processes linking metals and biota in the SML are not yet fully understood. In this study, we analyzed the metal (Cd, Co, Cu, Fe, Ni, Mo, V, Zn and Pb) concentrations in aerosol samples, SML (dissolved and total fractions) and in subsurface waters (SSW; dissolved fraction at ~ 1 m depth) from the Western Mediterranean Sea during a cruise in May–June 2017. The bacterial community composition and abundance in the SML and SSW, and the primary production and Chl-a in the SSW were measured simultaneously at all stations during the cruise. Residence times of particulate metals derived from aerosols deposition ranged from a couple of minutes for Co (2.7 ± 0.9 min; more affected by wind conditions) to a few hours for Cu (3.0 ± 1.9 h). Concentration of most dissolved metals in both, the SML and SSW, were well correlated with the salinity gradient and showed the characteristic eastward increase in surface waters of the Mediterranean Sea (MS). Contrarily, the total fraction of some reactive metals in the SML (i.e. Cu, Fe, Pb and Zn) showed negative trends with salinity, these trends of concentrations seem to be associate to microbial uptake. Our results suggest a toxic effect of Ni on neuston and microbiology community’s abundance of the top meter of the surface waters of the Western Mediterranean Sea.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00590/70254/68302.pdf

https://archimer.ifremer.fr/doc/00590/70254/68303.pdf

DOI:10.5194/bg-2019-290

https://archimer.ifremer.fr/doc/00590/70254/	
Editor: 	Copernicus GmbH	
Relação: 	info:eu-repo/grantAgreement/EC/FP7/626734/EU//IRON-IC	
Formato: 	application/pdf	
Fonte: 	Biogeosciences (1726-4189) (Copernicus GmbH) In Press	
Fonte: 	info:eu-repo/semantics/openAccess

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