Rates of total oxygen uptake of sediments and benthic nutrient fluxes measured using an in situ autonomous benthic chamber in the sediment of the slope off the southwestern part of Ulleung Basin, East Sea SCIE SCOPUS KCI

Cited 4 time in WEB OF SCIENCE Cited 5 time in Scopus
Title
Rates of total oxygen uptake of sediments and benthic nutrient fluxes measured using an in situ autonomous benthic chamber in the sediment of the slope off the southwestern part of Ulleung Basin, East Sea
Author(s)
Lee, Jae Seong; An, Sung-Uk; Park, Young-Gyu; Kim, Eunsoo; Kim, Dongseon; Kwon, Jung No; Kang, Dong-Jin; Noh, Jae-Hoon
KIOST Author(s)
Lee, Jae Seong(이재성)Park, Young Gyu(박영규)Kim, Dongseon(김동선)Kang, Dong-Jin(강동진)Noh, Jae Hoon(노재훈)
Publication Year
2015-09
Abstract
We have developed a new autonomous benthic lander for deep-sea research, the Korea Institute of Ocean Science and Technology (KIOST) BelcII and BelpII. The benthic lander was successfully tested at 950 and 1450 m water depths on the slope off the southwestern part of the Ulleung Basin in the East Sea of Korea. The ex situ measurements of the total oxygen uptake (TOU) rates at all the stations exceeded the in situ measurement values, and may indicate artificial effects from onboard incubation. The TOU rates were estimated to be 5.80 mmol m(-2) d(-1) and 3.77 mmol m(-2) d(-1) at water depths of 950 m and 1450 m, respectively. The benthic nutrient fluxes were also higher at water depths of 950 m, which indicates a partitioning of organic degradation with water depth. In addition, the negative phosphate and nitrogen benthic flux ratios and the higher nitrate removal flux via the sediment-water interface at the slope imply that the nitrogen in the bottom water may be preferentially removed via microbial respiration processes in the sediments, and may be coupled with the low nitrogen-to-phosphate ratio found in the deep water. Although our measurements comprised just two experiments in the slope sediment, the robust in situ measurement of the benthic fluxes in the slope sediment is a forerunner for new research into the biogeochemical cycles across the shelf edge-slope-basin system in the East Sea.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2416
DOI
10.1007/s12601-015-0053-x
Bibliographic Citation
OCEAN SCIENCE JOURNAL, v.50, no.3, pp.581 - 588, 2015
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Subject
ORGANIC-CARBON; SULFATE REDUCTION; CONTINENTAL-SLOPE; ATLANTIC; LANDER; WATER; RESPIRATION
Keywords
autonomous in situ benthic lander; total oxygen uptake; slope sediment; biogeochemical organic carbon cycles; benthic nutrient fluxes; net nitrogen removal; East Sea
Type
Article
Language
English
Document Type
Article
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Related Researcher
Research Interests

ocean circulation,ocean mixing,marine debris,해양순환,해양혼합,해양부유물

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