Articles | Volume 13, issue 14
Biogeosciences, 13, 4099–4109, 2016
https://doi.org/10.5194/bg-13-4099-2016
Biogeosciences, 13, 4099–4109, 2016
https://doi.org/10.5194/bg-13-4099-2016
Research article
18 Jul 2016
Research article | 18 Jul 2016

Diatoms Si uptake capacity drives carbon export in coastal upwelling systems

Fatima Abrantes et al.

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Manuscript not accepted for further review
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Cited articles

Abrantes, F.: Diatom assemblages as upwelling indicators in surface sediments in Portugal, Mar. Geol., 85, 15–39, 1988.
Abrantes, F.: 200 ka Diatom Records from Atlantic Upwelling sites Reveal Maximum Productivity during LGM and a Shift in Phytoplankton Community Structure at 185 ka, Earth Planet. Sci. Lett., 176, 7–16, 2000.
Abrantes, F. and Moita, T.: Water Column and Recent Sediment Data on Diatoms and Coccolithophorids, off Portugal, Confirm Sediment Record as a Memory of Upwelling Events, Oceanol. Acta, 22, 319–336, 1999.
Abrantes, F., Meggers, H., Nave, S., Bollman, J., Palma, S., Sprengel, C., Hendericks, J., Spies, A., Salgueiro, E., Moita, T., and Neuer, S.: Fluxes of micro-organisms along a productivity gradient in the Canary Islands region (29° N): implications for paleoreconstructions, Deep-Sea Res. Pt. II, 49, 3599–3629, 2002.
Abrantes, F. I. G., Lopes, C., and Castro, M.: Quantitative diatom analyses – a faster cleaning procedure, Deep-Sea Res. Pt. I, 52, 189–198, 2005.
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Short summary
Diatoms are the dominant primary producers of the most productive and best fishing areas of the modern ocean, the coastal upwelling systems. This turns them into important contributors to the biological pump and climate change. To help untangle their response to warming climate, we compare the worldwide diatom sedimentary abundance (SDA) to environmental variables and find that the capacity of diatoms to take up silicic acid sets an upper limit on global export production in these ocean regions.
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