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Assessing the impact of a tidal power plant operation on sedimentary organic matter characteristics in Lake Shihwa (South Korea)

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Title
Assessing the impact of a tidal power plant operation on sedimentary organic matter characteristics in Lake Shihwa (South Korea)
Other Titles
조력 발전소 운영의 시화호(한국) 퇴적 유기물 특성에 대한 영향 평가
Authors
Dahae Kim
Shin, Kyung-Hoon
Kongtae Ra
Min-Seob Kim
Kim, Jung-Hyun
Keywords
Lake Shiwha; n-alkanes
Issue Date
2017
Citation
Dahae Kim, et al. 2017. Assessing the impact of a tidal power plant operation on sedimentary organic matter characteristics in Lake Shihwa (South Korea). 3rd Sino-Korea symposium on environmental health and ecological safety. Beijing. 2017.07.05~2017.07.07.
Abstract
The artificial Lake Shiwha located close to the Yellow Sea, one of the most polluted areas in South Korea, is typically under the strong anthropogenic pressure with the continuous organic matter inputs from industrial, urban, rural and reed wetland areas. The Shihwa tidal power plant was built in 2011 in order to improve the water quality in Lake Shiwha. In this study, we aimed to disentangle diverse organic matter sources in lake sediments and thus to assess the impact of the Shihwa tidal power plant on sedimentary organic matter characteristics in Lake Shiwha. For this purpose, we investigated sediments collected from four streams flowing into Lake Shihwa in 2016, surface sediments collected at three sites in Lake Shihwa in 2009, 2012 and 2016, and sediment cores collected at the same sites in 2009 and 2016. We applied both bulk (contents of total organic carbon (TOC) and total nitrogen (TN), δ13CTOC and δ15NTN) and molecular (concentrations and δ13C of n-alkanes) parameters. Our results indicate that stronger anoxic conditions prevailed in Lake Shiwha in 2009 than in 2012 and 2016. Accordingly, it appears that the construction and operation of the tidal power plant influenced the sedimentary organic matter characteristics in Lake Shiwha, by improving the water circulation and thus the water quality.
URI
http://repository.kopri.re.kr/handle/201206/8295
Conference Name
3rd Sino-Korea symposium on environmental health and ecological safety
Conference Place
Beijing
Conference Date
2017.07.05~2017.07.07
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