Low benthic mineralization and nutrient fluxes in the continental shelf sediment of the northern East China Sea SCIE SCOPUS

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Title
Low benthic mineralization and nutrient fluxes in the continental shelf sediment of the northern East China Sea
Author(s)
Kim, Sung Han; Lee, Jae Seong; Kim, Kyung Tae; Kim, Sanglyeol; Yu, Ok Hwan; Lim, Dhongil; Kim, Suk Hyun
KIOST Author(s)
Kim, Sung Han(김성한)Lee, Jae Seong(이재성)Kim, Kyung Tae(김경태)Kim, Sanglyeol(김상렬)Yu, Ok Hwan(유옥환)Lim, Dhongil(임동일)Kim, Suk Hyun(김석현)
Publication Year
2020-09
Abstract
The sediment oxygen uptake rate, vertical distributions of organic carbon content, sedimentation rate, and benthic nutrient flux were measured from May 29 to June 9, 2015, to evaluate the partitioned organic carbon and nutrient cycles in the sediment of northern part of East China Sea. The sediment oxygen uptake rate, measured by in situ and/or ex situ incubation methods were ranged from 5.81 +/- 0.08 to 16.36 +/- 0.08 mmol O-2 m(-2) d(-1). The fauna mediated oxygen uptake rate were ranged from 5.80 +/- 0.04 to 8.09 +/- 1.52 mmol O-2 m(-2) d(-1), showing a strong relationship with the benthic macrofauna biomass and density. The burial flux of organic carbon into sediment layer ranged from 0.26 to 2.04 mmol C m(-2) d(-1) (average: 0.92 +/- 0.64 mmol C m(-2) d(-1)), which comprised 0.5-4.2% (average: 1.9 +/- 1.3%) of primary production. Burial efficiency ranged from 2.0 to 22.4% (average: 11.1 +/- 7.0%). Low sediment oxygen uptake rate caused low effluxes of dissolved inorganic nitrogen (0.19 +/- 0.03-0.73 +/- 0.04 mmol N m(-2) d(-1)), phosphate (-0.034 +/- 0.004-0.016 +/- 0.005 mmol P m(-2) d(-1)), and silicate (0.30 +/- 0.03-1.61 +/- 0.06 mmol Si m(-2) d(-1)), which accounted for less than 10% of the nutrients required for primary production in the water column.
ISSN
1385-1101
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32919
DOI
10.1016/j.seares.2020.101934
Bibliographic Citation
JOURNAL OF SEA RESEARCH, v.164, 2020
Publisher
ELSEVIER
Subject
CHANGJIANG YANGTZE-RIVER; TOTAL OXYGEN-UPTAKE; ORGANIC-CARBON; IN-SITU; SPATIAL VARIABILITY; SEASONAL-VARIATION; MARINE-SEDIMENTS; WATER INTERFACE; RATES; DYNAMICS
Keywords
Total oxygen uptake; Diffusive oxygen uptake; Benthic nutrient flux; Organic carbon; Continental shelf; East China Sea
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER
Related Researcher
Research Interests

Benthos,저서동물

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