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http://dx.doi.org/10.11614/KSL.2014.47.2.127

Determination of the Origin of Particulate Organic Matter at the Lake Paldang using Stable Isotope Ratios (${\delta}^{13}C$, ${\delta}^{15}N$)  

Kim, Min-Seob (Environmental Measurement & Analysis Center, NIER)
Kim, Jong-Min (Environmental Measurement & Analysis Center, NIER)
Hwang, Jong-Yeon (Environmental Measurement & Analysis Center, NIER)
Kim, Bo-Kyong (Environmental Measurement & Analysis Center, NIER)
Cho, Hang-Soo (Environmental Measurement & Analysis Center, NIER)
Youn, Seok Jea (Environmental Measurement & Analysis Center, NIER)
Hong, Suk-Young (Environmental Measurement & Analysis Center, NIER)
Kwon, Oh-Sang (Environmental Measurement & Analysis Center, NIER)
Lee, Won-Seok (Environmental Measurement & Analysis Center, NIER)
Publication Information
Korean Journal of Ecology and Environment / v.47, no.2, 2014 , pp. 127-134 More about this Journal
Abstract
Organic carbon and nitrogen stable isotope ratios of particulate organic matter (POM) were determined at 7 stations (6 stations in Han river and Paldang dam outflow station) from May to October 2013, in order to understand the origin of POM at the Han river. ${\delta}^{13}C$ values of POM in four stations showed significant seasonal changes season, but ${\delta}^{15}N$ values were enriched in around Kyeongan stream (K). POC, PN and Chl-a concentration showed a similar seasonal pattern in Kyeongan stream, with an apparent decrease from July to August. POC and PN concentration has a higher correlation with Chl-a concentration in Kyeongan stream (K). ${\delta}^{13}C$ and ${\delta}^{15}N$ values of POM has a lighter value during lower Chl-a concentration peroid, compared to other seasons. Our results revealed that Kyeongan stream (K) seemed to be influenced by substantial amount of organic manure or fertilizer input in 2013, compared to the previous year (2012). These results suggest that the analysis of stable isotope ratios is a simple but useful tool for the identification of organic matter origin in aquatic environments.
Keywords
stable isotope; particulate organic matter; Han river;
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