Articles | Volume 13, issue 21
https://doi.org/10.5194/bg-13-6049-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-6049-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
03 Nov 2016
Research article |
| 03 Nov 2016
Unveiling the Si cycle using isotopes in an iron-fertilized zone of the Southern Ocean: from mixed-layer supply to export
Ivia Closset
CORRESPONDING AUTHOR
Sorbonne Universités (UPMC, Univ Paris 06)-CNRS-IRD-MNHN, LOCEAN
Laboratory, 4 place Jussieu, 75005 Paris, France
Damien Cardinal
Sorbonne Universités (UPMC, Univ Paris 06)-CNRS-IRD-MNHN, LOCEAN
Laboratory, 4 place Jussieu, 75005 Paris, France
Mathieu Rembauville
Sorbonne Universités (UPMC, Univ Paris 06)-CNRS, Laboratoire
d'Océanographie Microbienne (LOMIC), Observatoire Océanologique,
66650 Banyuls/mer, France
François Thil
Laboratoire des Sciences du Climat et de l'Environnement, CNRS 91190
Gif-sur-Yvette, France
Stéphane Blain
Sorbonne Universités (UPMC, Univ Paris 06)-CNRS, Laboratoire
d'Océanographie Microbienne (LOMIC), Observatoire Océanologique,
66650 Banyuls/mer, France
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Cited
12 citations as recorded by crossref.
- Zinc and nickel isotopes in seawater from the Indian Sector of the Southern Ocean: The impact of natural iron fertilization versus Southern Ocean hydrography and biogeochemistry R. Wang et al. 10.1016/j.chemgeo.2018.09.010
- Silicon Isotopes in an EMIC's Ocean: Sensitivity to Runoff, Iron Supply, and Climate H. Dietze et al. 10.1029/2020PA003960
- Linking silicon isotopic signatures with diatom communities K. Schmidtbauer et al. 10.1016/j.gca.2022.02.015
- Controls on Dissolved Silicon Isotopes Along the U.S. GEOTRACES Eastern Pacific Zonal Transect (GP16) P. Grasse et al. 10.1029/2020GB006538
- Diatom silicon isotope ratios in Quaternary research: Where do we stand? P. Frings et al. 10.1016/j.quascirev.2024.108966
- New Constraints on the Physical and Biological Controls on the Silicon Isotopic Composition of the Arctic Ocean M. Brzezinski et al. 10.3389/fmars.2021.699762
- Controls on the Silicon Isotope Composition of Diatoms in the Peruvian Upwelling P. Grasse et al. 10.3389/fmars.2021.697400
- GEOTRACES inter-calibration of the stable silicon isotope composition of dissolved silicic acid in seawater P. Grasse et al. 10.1039/C6JA00302H
- Deep regolith weathering controls δ30Si composition of groundwater under contrasting landuse in tropical watersheds S. Kavil et al. 10.1016/j.chemgeo.2024.122370
- New Insights Into Processes Controlling the δ30Si of Sinking Diatoms: A Seasonally Resolved Box Model Approach I. Closset et al. 10.1029/2018GB006115
- Seasonal, weathering and water use controls of silicon cycling along the river flow in two contrasting basins of South India P. Sarath et al. 10.1016/j.chemgeo.2022.120883
- Biogenic and lithogenic silicon along the GEOTRACES south West Indian Ocean section (SWINGS-GS02) and the islands mass effect on regional Si biogeochemical cycle V. Deteix et al. 10.1016/j.marchem.2024.104412
11 citations as recorded by crossref.
- Zinc and nickel isotopes in seawater from the Indian Sector of the Southern Ocean: The impact of natural iron fertilization versus Southern Ocean hydrography and biogeochemistry R. Wang et al. 10.1016/j.chemgeo.2018.09.010
- Silicon Isotopes in an EMIC's Ocean: Sensitivity to Runoff, Iron Supply, and Climate H. Dietze et al. 10.1029/2020PA003960
- Linking silicon isotopic signatures with diatom communities K. Schmidtbauer et al. 10.1016/j.gca.2022.02.015
- Controls on Dissolved Silicon Isotopes Along the U.S. GEOTRACES Eastern Pacific Zonal Transect (GP16) P. Grasse et al. 10.1029/2020GB006538
- Diatom silicon isotope ratios in Quaternary research: Where do we stand? P. Frings et al. 10.1016/j.quascirev.2024.108966
- New Constraints on the Physical and Biological Controls on the Silicon Isotopic Composition of the Arctic Ocean M. Brzezinski et al. 10.3389/fmars.2021.699762
- Controls on the Silicon Isotope Composition of Diatoms in the Peruvian Upwelling P. Grasse et al. 10.3389/fmars.2021.697400
- GEOTRACES inter-calibration of the stable silicon isotope composition of dissolved silicic acid in seawater P. Grasse et al. 10.1039/C6JA00302H
- Deep regolith weathering controls δ30Si composition of groundwater under contrasting landuse in tropical watersheds S. Kavil et al. 10.1016/j.chemgeo.2024.122370
- New Insights Into Processes Controlling the δ30Si of Sinking Diatoms: A Seasonally Resolved Box Model Approach I. Closset et al. 10.1029/2018GB006115
- Seasonal, weathering and water use controls of silicon cycling along the river flow in two contrasting basins of South India P. Sarath et al. 10.1016/j.chemgeo.2022.120883
Latest update: 17 Jul 2025
Short summary
Isotopic measurements were used to investigate the seasonal evolution of the silicon (Si) biogeochemical cycle in a naturally iron-fertilized area of the Southern Ocean. When comparing data from early spring and summer periods, the relationship between Si depletion, biogenic silica production, and their isotopic composition appears decoupled in this region. Considering these results, we refined the seasonal net Si production that was mainly sustained by surface phytoplankton populations.
Isotopic measurements were used to investigate the seasonal evolution of the silicon (Si)...
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