Fate of terrigenous organic matter across the Laptev Sea from the mouth of
the Lena River to the deep sea of the Arctic interior

Bröder, Lisa; Tesi, Tommaso; Salvadó, Joan A.; Semiletov, Igor P.; Dudarev, Oleg V.; Gustafsson, Örjan

doi:10.5194/bg-13-5003-2016

Articles | Volume 13, issue 17

https://doi.org/10.5194/bg-13-5003-2016

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

Special issue:

Climate–carbon–cryosphere interactions in the...

https://doi.org/10.5194/bg-13-5003-2016

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

Articles | Volume 13, issue 17

Research article

|

09 Sep 2016

Research article |

| 09 Sep 2016

Fate of terrigenous organic matter across the Laptev Sea from the mouth of the Lena River to the deep sea of the Arctic interior

Lisa Bröder, Tommaso Tesi, Joan A. Salvadó, Igor P. Semiletov, Oleg V. Dudarev, and Örjan Gustafsson

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May 2016	68	27	1	96
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Jul 2016	9	8	0	17
Aug 2016	21	5	1	27
Sep 2016	88	39	2	129
Oct 2016	32	23	4	59
Nov 2016	15	8	2	25
Dec 2016	14	7	0	21
Jan 2017	21	11	0	32
Feb 2017	17	18	1	36
Mar 2017	43	24	7	74
Apr 2017	49	25	5	79
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Jun 2017	43	21	4	68
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Sep 2017	14	13	2	29
Oct 2017	11	29	0	40
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May 2018	15	33	0	48
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Mar 2019	9	19	0	28
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Oct 2024	30	13	0	43
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Feb 2025	81	19	2	102
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Cumulative views and downloads (calculated since 18 May 2016)

Month	HTML	PDF	XML	Total
May 2016	68	27	1	96
Jun 2016	26	14	0	40
Jul 2016	9	8	0	17
Aug 2016	21	5	1	27
Sep 2016	88	39	2	129
Oct 2016	32	23	4	59
Nov 2016	15	8	2	25
Dec 2016	14	7	0	21
Jan 2017	21	11	0	32
Feb 2017	17	18	1	36
Mar 2017	43	24	7	74
Apr 2017	49	25	5	79
May 2017	49	22	10	81
Jun 2017	43	21	4	68
Jul 2017	18	17	1	36
Aug 2017	12	9	2	23
Sep 2017	14	13	2	29
Oct 2017	11	29	0	40
Nov 2017	21	30	1	52
Dec 2017	13	14	1	28
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Feb 2018	18	25	1	44
Mar 2018	19	26	2	47
Apr 2018	15	29	1	45
May 2018	15	33	0	48
Jun 2018	15	32	1	48
Jul 2018	15	30	1	46
Aug 2018	12	26	0	38
Sep 2018	8	19	0	27
Oct 2018	20	36	0	56
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Dec 2018	18	21	0	39
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Nov 2023	110	0	110
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Oct 2024	30	13	0	43
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Apr 2025	28	29	3	60
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Jun 2025	45	39	0	84
Jul 2025	34	30	3	67
Aug 2025	48	18	3	69
Sep 2025	58	31	1	90
Oct 2025	38	44	3	85
Nov 2025	13	30	0	43

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Short summary

Thawing permafrost may release large amounts of terrestrial organic carbon (TerrOC) to the Arctic Ocean. We assessed its fate in the marine environment with a suite of biomarkers. Across the Laptev Sea their concentrations in surface sediments decreased significantly and showed a trend to qualitatively more degraded TerrOC with increasing water depth. We infer that the degree of degradation of TerrOC is a function of the time spent under oxic conditions during protracted cross-shelf transport.