168 0

Extremely high sulfate reduction, sediment oxygen demand and benthic nutrient flux associated with a large-scale artificial dyke and its implication to benthic-pelagic coupling in the Yeongsan River estuary, Yellow Sea

Title
Extremely high sulfate reduction, sediment oxygen demand and benthic nutrient flux associated with a large-scale artificial dyke and its implication to benthic-pelagic coupling in the Yeongsan River estuary, Yellow Sea
Author
김성한
Keywords
Artificial dyke; Sulfate reduction; Sediment oxygen demand; Benthic nutrient flux; Benthic-pelagic coupling; Yeongsan River estuary
Issue Date
2017-05
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
MARINE POLLUTION BULLETIN, v. 120, No. 1-2, Page. 126-135
Abstract
We investigated environmental impact of large-scale dyke on the sediment geochemistry, sulfate reduction rates (SRRs), sediment oxygen demand (SOD) and potential contribution of benthic nutrient flux (BNF) to primary production in the Yeongsan River estuary, Yellow Sea. The sediment near the dyke (YE1) with high organic carbon (C-org) content ( ˃ 4%, dry wt.) was characterized by extremely high SOD (327 mmol m(-2) d(-1)) and SRRs (91-140 mmol m(-2) d(-1)). The sulfate reduction accounted for 73% of C-org oxidation, and was responsible for strikingly high concentrations of NH4+ (7.7 mM), PO43- (67 mu M) and HS- (487 mu M) in pore water. The BNF at YE1 accounted for approximately 200% of N and P required for primary production in the water column. The results present one of the most extreme cases that the construction of an artificial dyke may have profound impacts on the biogeochemical and ecological processes in coastal ecosystems.
URI
https://www.sciencedirect.com/science/article/pii/S0025326X17303545https://repository.hanyang.ac.kr/handle/20.500.11754/72081
ISSN
0025-326X; 1879-3363
DOI
10.1016/j.marpolbul.2017.04.047
Appears in Collections:
RESEARCH INSTITUTE[E](부설연구소) > INSTITUTE OF OCENA AND ATMOSPHERIC SCIENCES(해양ㆍ대기과학연구소) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE