A large artificial dyke greatly alters partitioning of sulfate and iron reduction and resultant phosphorus dynamics in sediments of the Yeongsan River estuary, Yellow Sea
DC Field | Value | Language |
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dc.contributor.author | An, Sung-Uk | - |
dc.contributor.author | Mok, Jin-Sook | - |
dc.contributor.author | Kim, Sung-Han | - |
dc.contributor.author | Choi, Jae-Hoon | - |
dc.contributor.author | Hyun, Jung-Ho | - |
dc.date.accessioned | 2021-06-22T10:02:41Z | - |
dc.date.available | 2021-06-22T10:02:41Z | - |
dc.date.created | 2021-01-21 | - |
dc.date.issued | 2019-05 | - |
dc.identifier.issn | 0048-9697 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/2928 | - |
dc.description.abstract | We investigated sediment geochemistry, partitioning of organic carbon (C-org) oxidation by iron reduction (FeR) and sulfate reduction (SR), and benthic phosphorus (P) release, togetherwith the P speciation in the sediments to elucidate the P dynamics in two contrasting sediments (i.e., estuarine vs. limnetic) separated by a large dyke in the Yeongsan River estuary of the Yellow Sea. In the sediments of the Yeongsan River estuary (St. YE), SR dominated the C-org oxidation pathway, accounting for 81.7% of total anaerobic C-org oxidation. Under the SR-dominated condition, H2S derived from SR reacts quickly with iron oxides to form iron sulfides, which ultimately release the P bound to Fe(III) into the pore water. The enhanced benthic P flux (0.24 mmol m(-2) d(-1)) at the YE site accounted for 80% of the P required for primary production in the water column. In contrast, in the limnetic sediments of the Yeongsan Lake (St. YL), where high levels of CH4 accumulated, most P was bound to Fe and Al, which resulted in a low benthic P flux (0.03 mmol m(-2) d(-1)). The results suggest that the frequent discharge of relatively P-depleted freshwater into the estuary via the artificial dyke may result in relatively P-limiting conditions in estuarine ecosystems. As a result, benthic P release from the SR-dominated estuarine sediment is a significant internal source of P in the coastal ecosystem. Our results indicate that the construction of a large dyke at a river mouth greatly alters C-org oxidation pathways and P dynamics in coastal ecosystems. (c) 2019 Elsevier B.V. All rights reserved. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Elsevier BV | - |
dc.title | A large artificial dyke greatly alters partitioning of sulfate and iron reduction and resultant phosphorus dynamics in sediments of the Yeongsan River estuary, Yellow Sea | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Hyun, Jung-Ho | - |
dc.identifier.doi | 10.1016/j.scitotenv.2019.02.058 | - |
dc.identifier.scopusid | 2-s2.0-85061660155 | - |
dc.identifier.wosid | 000460628600077 | - |
dc.identifier.bibliographicCitation | Science of the Total Environment, v.665, pp.752 - 761 | - |
dc.relation.isPartOf | Science of the Total Environment | - |
dc.citation.title | Science of the Total Environment | - |
dc.citation.volume | 665 | - |
dc.citation.startPage | 752 | - |
dc.citation.endPage | 761 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | CONTINENTAL-MARGIN SEDIMENTS | - |
dc.subject.keywordPlus | ORGANIC-CARBON OXIDATION | - |
dc.subject.keywordPlus | BENTHIC NUTRIENT FLUX | - |
dc.subject.keywordPlus | FRESH-WATER | - |
dc.subject.keywordPlus | MARINE-SEDIMENTS | - |
dc.subject.keywordPlus | COASTAL | - |
dc.subject.keywordPlus | RELEASE | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | METHANOGENESIS | - |
dc.subject.keywordPlus | AVAILABILITY | - |
dc.subject.keywordAuthor | P dynamics | - |
dc.subject.keywordAuthor | Sulfate reduction | - |
dc.subject.keywordAuthor | Iron reduction | - |
dc.subject.keywordAuthor | Benthic P flux | - |
dc.subject.keywordAuthor | Benthic-pelagic coupling | - |
dc.subject.keywordAuthor | Yeongsan River dyke | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0048969719305376?via%3Dihub | - |
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