Abstract: International audience; Biogenic barium (bio-Ba) was measured in trapped and suspended particles at both the mesotrophic (M) and oligotrophic (O) EUMELI sites, in the tropical NE Atlantic. Trap data (2500 m depth) were used to calculate the exported production (ExP), using the relationship established by Francois et al. [Francois, R., Honjo, S., Manganini, S., Ravizza, G., 1995. Bio-Ba fluxes to the deep sea: implications for paleoproductivity reconstructions. Global Biogeochem. Cycles 9, 289-303.]. We find 12 +/- 4 and 1.6 +/- 0.4 gC/m(2)/year...
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Topics: 
Oceanography
Atmospheric sciences