Consulta: creatorFacets:"Corn, M"
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Downward flux of particulate dimethylsulphoniopropionate (dmspp) in the tropical open-ocean
Provedor de dados: 5
Autores: Corn, M; Belviso, S; Nival, P; Vigot, A; Buatmenard, P.
We report results from free-drifting sediment trap deployments at 200 m depth which enable measurement of the diel variations in the downward flux of detrital particulate dimethylsulphoniopropionate (DMSPp) over periods of 24-72 hours in three contrasting trophic regimes of the tropical northeastern Atlantic Ocean off Mauritania. The source of DMSPp was the phytoplankton living in surficial water layers. The three regimes exhibited similar strong diel cycles, the nocturnal fluxes being up to 100-fold lower than the daytime fluxes. High (or low) detrital DMSPp, fluxes were associated with high (or low) numbers of pteropods trapped inside the sampling cups. Thus, contamination of sinking material is likely to have occurred, promoting an overestimate of the...
Tipo: Text
Palavras-chave: SULFUR; DMS; DMSP; ZOOPLANKTON; SEDIMENTATION.
Ano: 1994
URL: http://archimer.ifremer.fr/doc/00098/20886/18500.pdf