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Dual carbon isotope (δ13C and Δ14C) characterization of particulate organic carbon in the Geum and Seomjin estuaries, South Korea

Cited 4 time in wos
Cited 4 time in scopus
Title
Dual carbon isotope (δ13C and Δ14C) characterization of particulate organic carbon in the Geum and Seomjin estuaries, South Korea
Other Titles
금강과 섬진강 하구역에서 탄소 안정동위원소 및 방사성동위원소를 활용한 입자성 유기물 특성 연구
Authors
Kang, Sujin
Kim, Jung-Hyun
Ryu, Jong-Sik
Shin, Kyung-Hoon
Subject
Environmental Sciences & EcologyMarine & Freshwater Biology
Keywords
Particulate organic carbonEstuary damCarbon isotopesGeum estuarySeomjin estuary
Issue Date
2020-01
Citation
Kang, Sujin, et al. 2020. "Dual carbon isotope (δ13C and Δ14C) characterization of particulate organic carbon in the Geum and Seomjin estuaries, South Korea". MARINE POLLUTION BULLETIN, 150(1): 110719-110725.
Abstract
We investigated the source, composition, and reactivity of particulate organic carbon (POC) in two contrasting Korean estuary systems, a closed estuary (Geum) (i.e., with an estuary dam at the river mouth) and an open (Seomjin) estuary. A dual isotope (δ13CPOC and Δ14CPOC) approach was applied to surface water samples collected along a salinity gradient in August 2016. Our results indicate that phytoplankton-derived POC was the main contributor to the total POC pool in the reservoir of the Geum estuary, while terrestrial-derived POC predominated the upper Seomjin estuary. A simple binary mixing model using Δ14CPOC revealed a higher modern POC contribution (8790%) in the Geum estuary reservoir than that (77%) of the upper Seomjin estuary. Accordingly, it appears that an estuary dam can alter the source and reactivity of POC in a reservoir, which can be transferred to the adjacent coastal ecosystem.
URI
https://repository.kopri.re.kr/handle/201206/11770
DOI
http://dx.doi.org/10.1016/j.marpolbul.2019.110719
Type
Article
Station
기타()
Indexed
SCI
Appears in Collections  
2019-2019, Organic carbon transfer across the river-sea interface: a case study in Geum and Sumjin river systems (19-19) / Kim, Junghyun (PN19100)
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