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http://dx.doi.org/10.11626/KJEB.2018.36.4.665

A Study on Transport Characteristics of Organic and Inorganic Carbons in the Open Estuary of the Tamjin River, Korea  

Park, Hyung-Geun (Division of Basic Research, National Institute of Ecology)
Ock, Giyoung (Division of Basic Research, National Institute of Ecology)
Publication Information
Korean Journal of Environmental Biology / v.36, no.4, 2018 , pp. 665-671 More about this Journal
Abstract
This paper represents an investigation into the pattern of carbon transportation and composition on an open estuary in the transition zone between the river and marine environment in Tamjin River where stream water flows into the Gangjin Bay. To conduct the study, seven plots were established along an environmental gradient from river and estuary to the ocean. Surface water samples were collected thrice during the summer rainfalls and non-flooding seasons in 2017. The samples were then measured for the concentrations of dissolved organic carbon ([DOC]), particulate organic carbon ([POC]) and dissolved inorganic carbon ([DIC]). An analysis of the results showed that [POC] did not increase in the river even during the summer rainfall. However, [DOC] increased resulting in a higher [DOC]:[POC] ratios for the non-flooding season compared to summer rainfall events. On the other hand, the marine site of the estuary bay showed the highest [DIC] which was stable relative to those of river sites. The results suggest that in an open estuary zone, river and ocean supplied the open estuary zone with different types of carbon materials; mainly DOC supplied from the river and DIC sourced from the ocean.
Keywords
Tamjin River; carbon transport; open estuary; DOC; POC;
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