Unveiling the Si cycle using isotopes in an iron-fertilized zone of the
Southern Ocean: from mixed-layer supply to export

Closset, Ivia; Cardinal, Damien; Rembauville, Mathieu; Thil, François; Blain, Stéphane

doi:10.5194/bg-13-6049-2016

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.

https://doi.org/10.5194/bg-13-6049-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 21

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, Damien Cardinal, Mathieu Rembauville, François Thil, and Stéphane Blain

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Total article views: 2,568 (including HTML, PDF, and XML)

HTML	PDF	XML	Total	Supplement	BibTeX	EndNote
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Views and downloads (calculated since 08 Jun 2016)

Month	HTML	PDF	XML	Total
Jun 2016	69	25	2	96
Jul 2016	7	4	1	12
Aug 2016	16	1	0	17
Sep 2016	2	0	2
Oct 2016	3	1	0	4
Nov 2016	67	26	1	94
Dec 2016	14	15	3	32
Jan 2017	16	9	0	25
Feb 2017	10	4	1	15
Mar 2017	18	11	1	30
Apr 2017	36	11	1	48
May 2017	43	18	2	63
Jun 2017	25	5	0	30
Jul 2017	17	6	1	24
Aug 2017	8	7	1	16
Sep 2017	9	7	1	17
Oct 2017	3	6	1	10
Nov 2017	7	9	0	16
Dec 2017	5	5	0	10
Jan 2018	6	8	0	14
Feb 2018	17	5	0	22
Mar 2018	11	5	1	17
Apr 2018	6	1	0	7
May 2018	9	5	0	14
Jun 2018	7	5	0	12
Jul 2018	9	7	0	16
Aug 2018	12	4	0	16
Sep 2018	4	6	0	10
Oct 2018	7	5	0	12
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Dec 2018	7	4	1	12
Jan 2019	4	5	0	9
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Mar 2019	5	4	1	10
Apr 2019	6	6	2	14
May 2019	4	6	0	10
Jun 2019	5	6	0	11
Jul 2019	4	5	0	9
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Oct 2019	8	9	1	18
Nov 2019	8	3	0	11
Dec 2019	7	6	1	14
Jan 2020	9	5	1	15
Feb 2020	3	4	0	7
Mar 2020	3	4	0	7
Apr 2020	9	5	0	14
May 2020	7	3	0	10
Jun 2020	11	8	0	19
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Aug 2020	3	7	3	13
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Oct 2020	11	5	2	18
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Jan 2021	21	10	1	32
Feb 2021	24	5	1	30
Mar 2021	13	10	1	24
Apr 2021	9	6	1	16
May 2021	5	8	0	13
Jun 2021	4	1	0	5
Jul 2021	4	7	0	11
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Nov 2021	7	36	1	44
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Apr 2022	4	6	0	10
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Dec 2022	13	6	2	21
Jan 2023	13	8	2	23
Feb 2023	12	4	2	18
Mar 2023	14	8	1	23
Apr 2023	9	2	0	11
May 2023	21	9	0	30
Jun 2023	31	3	5	39
Jul 2023	11	7	1	19
Aug 2023	12	5	2	19
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Nov 2023	1	1	4	6
Dec 2023	11	2	2	15
Jan 2024	9	4	1	14
Feb 2024	13	9	1	23
Mar 2024	9	24	1	34
Apr 2024	15	8	5	28
May 2024	19	5	7	31
Jun 2024	14	8	4	26
Jul 2024	35	7	6	48
Aug 2024	35	3	3	41
Sep 2024	15	8	1	24
Oct 2024	20	11	1	32
Nov 2024	14	5	1	20
Dec 2024	15	8	1	24
Jan 2025	16	8	0	24
Feb 2025	21	15	1	37
Mar 2025	25	6	0	31
Apr 2025	11	10	0	21
May 2025	19	5	1	25
Jun 2025	68	14	0	82
Jul 2025	40	9	3	52
Aug 2025	39	9	1	49
Sep 2025	51	11	2	64
Oct 2025	29	17	3	49
Nov 2025	24	22	1	47

Cumulative views and downloads (calculated since 08 Jun 2016)

Month	HTML	PDF	XML	Total
Jun 2016	69	25	2	96
Jul 2016	7	4	1	12
Aug 2016	16	1	0	17
Sep 2016	2	0	2
Oct 2016	3	1	0	4
Nov 2016	67	26	1	94
Dec 2016	14	15	3	32
Jan 2017	16	9	0	25
Feb 2017	10	4	1	15
Mar 2017	18	11	1	30
Apr 2017	36	11	1	48
May 2017	43	18	2	63
Jun 2017	25	5	0	30
Jul 2017	17	6	1	24
Aug 2017	8	7	1	16
Sep 2017	9	7	1	17
Oct 2017	3	6	1	10
Nov 2017	7	9	0	16
Dec 2017	5	5	0	10
Jan 2018	6	8	0	14
Feb 2018	17	5	0	22
Mar 2018	11	5	1	17
Apr 2018	6	1	0	7
May 2018	9	5	0	14
Jun 2018	7	5	0	12
Jul 2018	9	7	0	16
Aug 2018	12	4	0	16
Sep 2018	4	6	0	10
Oct 2018	7	5	0	12
Nov 2018	11	4	0	15
Dec 2018	7	4	1	12
Jan 2019	4	5	0	9
Feb 2019	3	2	0	5
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Apr 2019	6	6	2	14
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Jul 2019	4	5	0	9
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Oct 2019	8	9	1	18
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Mar 2020	3	4	0	7
Apr 2020	9	5	0	14
May 2020	7	3	0	10
Jun 2020	11	8	0	19
Jul 2020	16	15	8	39
Aug 2020	3	7	3	13
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Oct 2020	11	5	2	18
Nov 2020	8	12	2	22
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Jan 2021	21	10	1	32
Feb 2021	24	5	1	30
Mar 2021	13	10	1	24
Apr 2021	9	6	1	16
May 2021	5	8	0	13
Jun 2021	4	1	0	5
Jul 2021	4	7	0	11
Aug 2021	7	4	0	11
Sep 2021	8	12	0	20
Oct 2021	5	32	0	37
Nov 2021	7	36	1	44
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Jan 2022	7	8	0	15
Feb 2022	8	2	1	11
Mar 2022	9	6	0	15
Apr 2022	4	6	0	10
May 2022	7	6	1	14
Jun 2022	10	6	0	16
Jul 2022	6	4	0	10
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Sep 2022	8	2	1	11
Oct 2022	12	4	2	18
Nov 2022	23	8	0	31
Dec 2022	13	6	2	21
Jan 2023	13	8	2	23
Feb 2023	12	4	2	18
Mar 2023	14	8	1	23
Apr 2023	9	2	0	11
May 2023	21	9	0	30
Jun 2023	31	3	5	39
Jul 2023	11	7	1	19
Aug 2023	12	5	2	19
Sep 2023	5	3	0	8
Oct 2023	9	5	2	16
Nov 2023	1	1	4	6
Dec 2023	11	2	2	15
Jan 2024	9	4	1	14
Feb 2024	13	9	1	23
Mar 2024	9	24	1	34
Apr 2024	15	8	5	28
May 2024	19	5	7	31
Jun 2024	14	8	4	26
Jul 2024	35	7	6	48
Aug 2024	35	3	3	41
Sep 2024	15	8	1	24
Oct 2024	20	11	1	32
Nov 2024	14	5	1	20
Dec 2024	15	8	1	24
Jan 2025	16	8	0	24
Feb 2025	21	15	1	37
Mar 2025	25	6	0	31
Apr 2025	11	10	0	21
May 2025	19	5	1	25
Jun 2025	68	14	0	82
Jul 2025	40	9	3	52
Aug 2025	39	9	1	49
Sep 2025	51	11	2	64
Oct 2025	29	17	3	49
Nov 2025	24	22	1	47

Latest update: 16 Nov 2025

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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.