Organic Carbon Oxidation in the Sediment of the Ulleung Basin in the East Sea SCIE SCOPUS

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Title
Organic Carbon Oxidation in the Sediment of the Ulleung Basin in the East Sea
Author(s)
Lee, Jae Seong; Kim, Sung Han; Baek, ju Wook; Kim, Kyung Tae; Kim, Dong Seon; KIM, YOUNG IL; Lee, Won-Chan; An, Sung-Uk; Kim, Chang Hwan; Park, Chan Hong; Hong, Sokjin
KIOST Author(s)
Lee, Jae Seong(이재성)Kim, Sung Han(김성한)Baek, ju Wook(백주욱)Kim, Kyung Tae(김경태)Kim, Dong Seon(김동선)KIM, YOUNG IL(김영일)An, Sung-Uk(안성욱)Kim, Chang Hwan(김창환)Park, Chan Hong(박찬홍)
Alternative Author(s)
이재성; 김성한; 백주욱; 김경태; 김동선; 김영일; 안성욱; 김창환; 박찬홍
Publication Year
2022-05
Abstract
We characterized the biogeochemical organic carbon (Corg) cycles in the surface sediment layer of the Ulleung Basin (UB) of the East Sea. The total oxygen uptake (TOU) rate and the diffusive oxygen uptake (DOU) rate of the sediment were measured using an autonomous in situ benthic lander equipped with a benthic chamber (KIOST BelcII) and a microprofiler (KIOST BelpII). The TOU rate was in the range of 1.51 to 1.93 mmol O2 m−2 d−1, about double the DOU rate. The high TOU/DOU ratio implies that the benthic biological activity in the upper sediment layer is one of the important factors controlling benthic remineralization. The in situ oxygen exposure time was about 20 days, which is comparable to the values of other continental margin sediments. The sedimentary Corg oxidation rates ranged from 6.4 to 6.5 g C m−2 yr−1, which accounted for ~2% of the primary production in UB. The Corg burial fluxes ranged from 3.14 ± 0.12 to 3.48 ± 0.60 g C m−2 yr−1, corresponding to more than 30% of the deposited Corg buried into the inactive sediment deep layer.
ISSN
2077-1312
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/42503
DOI
10.3390/jmse10050694
Bibliographic Citation
Journal of Marine Science and Engineering , v.10, no.5, 2022
Publisher
MDPI AG
Keywords
benthic chamber; benthic nutrients flux; benthic organic carbon oxidation; East Sea; in situ measurement; oxygen microprofiler; sedimentary organic carbon; Ulleung Basin
Type
Article
Language
English
Document Type
Article
Publisher
MDPI AG
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