Effect of Abalone Farming on Sediment Geochemistry in the Shallow Sea near Wando, South Korea

DC Field Value Language
dc.contributor.author 강정원 -
dc.contributor.author 이연규 -
dc.contributor.author 정다운 -
dc.contributor.author 이정식 -
dc.contributor.author 최양호 -
dc.contributor.author 신윤경 -
dc.date.accessioned 2020-07-15T23:32:43Z -
dc.date.available 2020-07-15T23:32:43Z -
dc.date.created 2020-02-11 -
dc.date.issued 2015-11-05 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/25166 -
dc.description.abstract Wando County has grown up to 93% of the total abalone produced in South Korea since the late 1990s however, this production has been decreasing in recent years. The objectives of this study were to understand the potential contamination risks of abalone farming and to examine the influence of intensive abalone farming on sediment quality by analyzing grain-size composition, organic matter (total organic carbon (TOC), total nitrogen (TN), total sulfur (TS)) and heavy metal content, pH, and 210Pb geochronology. The results of organic matter analysis from surface and core sediment (length: 64 cm) showed that the area around the abalone farm had oxic marine-to-brackish conditions, but that the area directly below an abalone cage (location 7) had reductive conditions, with a C/S ratio of ~2. The average TN levels in the surface and core sediments were 0.25% and 0.29%, respectively, and this was predominantly due to the use of seaweed for feed. The low sediment pH (surface, 7.23 core, 7.04), indicates that acidification of the bottom sediment has gradually increased since the initiation of abalone farming and is likely due to the continuous accumulation of uneaten feed and feces. Heavy metal pollution was not apparent based on the examination of EF and Igeo, although the excess metal flux of Ni, Pb, Cu, Co, As, and Cd increased toward surface of the sediment core. These sediment changes may be caused by the rapid accumulsks of abalone farming and to examine the influence of intensive abalone farming on sediment quality by analyzing grain-size composition, organic matter (total organic carbon (TOC), total nitrogen (TN), total sulfur (TS)) and heavy metal content, pH, and 210Pb geochronology. The results of organic matter analysis from surface and core sediment (length: 64 cm) showed that the area around the abalone farm had oxic marine-to-brackish conditions, but that the area directly below an abalone cage (location 7) had reductive conditions, with a C/S ratio of ~2. The average TN levels in the surface and core sediments were 0.25% and 0.29%, respectively, and this was predominantly due to the use of seaweed for feed. The low sediment pH (surface, 7.23 core, 7.04), indicates that acidification of the bottom sediment has gradually increased since the initiation of abalone farming and is likely due to the continuous accumulation of uneaten feed and feces. Heavy metal pollution was not apparent based on the examination of EF and Igeo, although the excess metal flux of Ni, Pb, Cu, Co, As, and Cd increased toward surface of the sediment core. These sediment changes may be caused by the rapid accumul -
dc.description.uri 2 -
dc.language English -
dc.publisher 한국해양학회 -
dc.relation.isPartOf 2015년도추계학술발표대회 -
dc.title Effect of Abalone Farming on Sediment Geochemistry in the Shallow Sea near Wando, South Korea -
dc.type Conference -
dc.citation.conferencePlace KO -
dc.citation.endPage 222 -
dc.citation.startPage 222 -
dc.citation.title 2015년도추계학술발표대회 -
dc.contributor.alternativeName 강정원 -
dc.identifier.bibliographicCitation 2015년도추계학술발표대회, pp.222 -
dc.description.journalClass 2 -
Appears in Collections:
Sea Power Enhancement Research Division > Marine Domain & Security Research Department > 2. Conference Papers
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse