Silicon cycle in the tropical South Pacific: contribution to the global Si cycle and evidence for an active pico-sized siliceous plankton

Leblanc, Karine; Cornet, Véronique; Rimmelin-Maury, Peggy; Grosso, Olivier; Hélias-Nunige, Sandra; Brunet, Camille; Claustre, Hervé; Ras, Joséphine; Leblond, Nathalie; Quéguiner, Bernard

doi:https://doi.org/10.5194/bg-15-5595-2018

Articles | Volume 15, issue 18

https://doi.org/10.5194/bg-15-5595-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Interactions between planktonic organisms and biogeochemical...

https://doi.org/10.5194/bg-15-5595-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 18

Research article

|

20 Sep 2018

Research article |

| 20 Sep 2018

Silicon cycle in the tropical South Pacific: contribution to the global Si cycle and evidence for an active pico-sized siliceous plankton

Karine Leblanc, Véronique Cornet, Peggy Rimmelin-Maury, Olivier Grosso, Sandra Hélias-Nunige, Camille Brunet, Hervé Claustre, Joséphine Ras, Nathalie Leblond, and Bernard Quéguiner

Download

Final revised paper (published on 20 Sep 2018)
Preprint (discussion started on 15 May 2018)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

- Printer-friendly version

- Supplement

RC1: 'review', Anonymous Referee #1, 18 May 2018
- AC1: 'reply to reviewer 1', K. Leblanc, 09 Jul 2018
RC2: 'referee 2', Anonymous Referee #2, 21 May 2018
- AC2: 'reply to reviewer 2', K. Leblanc, 09 Jul 2018
RC3: 'Reviewer comment', Anonymous Referee #3, 06 Jun 2018
- AC3: 'reply to reviewer 3', K. Leblanc, 09 Jul 2018
AC4: 'Revised manuscript', K. Leblanc, 11 Jul 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by editor) (23 Jul 2018) by Douglas G. Capone

AR by K. Leblanc on behalf of the Authors (26 Jul 2018) Author's response

ED: Publish as is (27 Aug 2018) by Douglas G. Capone

AR by K. Leblanc on behalf of the Authors (28 Aug 2018) Author's response Manuscript

Short summary

The Si biogeochemical cycle was studied during two oceanographic cruises in the tropical South Pacific in 2005 and 2015, between New Caledonia and the Chilean upwelling (8–34° S). Some of the lowest levels of biogenic silica stocks were found in the southern Pacific gyre, where Chlorophyll a concentrations are most depleted worldwide. Size-fractionated biogenic silica concentrations as well as Si kinetic uptake experiments revealed biological Si uptake by the picoplanktonic size fraction.