Articles | Volume 14, issue 4
https://doi.org/10.5194/bg-14-941-2017
© Author(s) 2017. 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-14-941-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
01 Mar 2017
Research article |
| 01 Mar 2017
Manganese and iron reduction dominate organic carbon oxidation in surface sediments of the deep Ulleung Basin, East Sea
Department of Marine Science and Convergence Engineering, Hanyang
University, 55 Hanyangdaehak-ro, Ansan, Gyeonggi-do 15588, South Korea
Sung-Han Kim
Department of Marine Science and Convergence Engineering, Hanyang
University, 55 Hanyangdaehak-ro, Ansan, Gyeonggi-do 15588, South Korea
Jin-Sook Mok
Department of Marine Science and Convergence Engineering, Hanyang
University, 55 Hanyangdaehak-ro, Ansan, Gyeonggi-do 15588, South Korea
Hyeyoun Cho
Department of Marine Science and Convergence Engineering, Hanyang
University, 55 Hanyangdaehak-ro, Ansan, Gyeonggi-do 15588, South Korea
Tongsup Lee
Department of Oceanography, Pusan National University, 2
Busandaehak-ro, Busan, 46241, South Korea
Verona Vandieken
Institute for Chemistry and Biology of the Marine Environment,
University of Oldenburg, Carl-von-Ossietzky-Str. 9–11, 26129 Oldenburg,
Germany
Bo Thamdrup
CORRESPONDING AUTHOR
Nordic Center for Earth Evolution, Department of Biology, University
of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
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Short summary
The surface sediments of the Ulleung Basin (UB) in the East Sea are characterized by high organic carbon contents (> 2.5 %, dry wt.) and very high concentrations of Mn oxides (> 200 μmol cm−3) and Fe oxides (up to 100 μmol cm−3). For the first time in deep offshore sediments on the Asian margin with water depth over 2000 m, we report that Mn reduction and Fe reduction were the dominant organic carbon (Corg) oxidation pathways, comprising 45 % and 20 % of total Corg oxidation, respectively.
The surface sediments of the Ulleung Basin (UB) in the East Sea are characterized by high...
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