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Biogeosciences An interactive open-access journal of the European Geosciences Union
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BG | Volume 15, issue 9
Biogeosciences, 15, 2961–2989, 2018
https://doi.org/10.5194/bg-15-2961-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Interactions between planktonic organisms and biogeochemical...

Biogeosciences, 15, 2961–2989, 2018
https://doi.org/10.5194/bg-15-2961-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 16 May 2018

Research article | 16 May 2018

Nutrient availability and the ultimate control of the biological carbon pump in the western tropical South Pacific Ocean

Thierry Moutin et al.
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OUTPACE cruise Thierry Moutin and Sophie Bonnet https://doi.org/10.17600/15000900

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Short summary
Surface waters of the western tropical South Pacific were sampled along a longitudinal 4000 km transect during the stratified period between the Melanesian Archipelago and the western part of the South Pacific gyre. We found a significant biological carbon pump sustained almost exclusively by N2 fixation and essentially controlled by phosphate availability in the iron-rich Melanesian Archipelago waters which appears to be a net sink for atmospheric CO2 while the gyre is in a quasi-steady state.
Surface waters of the western tropical South Pacific were sampled along a longitudinal 4000 km...
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