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http://dx.doi.org/10.17663/JWR.2020.22.2.59

The Origin and Characteristics of Sedimentary Organic Matter on Sindu-ri Tidal Flat, Korea  

Shin, Woo Seok (Seohaean Research Institute, ChungNam Institute)
Publication Information
Journal of Wetlands Research / v.22, no.2, 2020 , pp. 59-65 More about this Journal
Abstract
The purpose of this study is to determine the origin of organic matter on sediment at Sindu-ri tidal flat. Grain size, organic matter, C/N ratio and the 13C and δ15N ratio were measured at three stations (Stn. A, B, C) of the tidal flat. As a result, the spatial variation in sediment properties showed that organic matter was related positively to the sediment mud content. Organic matters originating from marine particulate organic matter (marine POM) and fish farm particulate organic matter (fish farm POM) showed sedimentation of organic matters at Stn. A, sandy tidal flat, though terrestial plant (TP) and benthic microalgae (BMA) did at Stn.C, muddy tidal flat. Meanwhile, Stn. B, the intermediate property of Stn. A and C, was affected by marine POM and BMA. Furthermore, it was revealed that the amount and origin of organic matters in the sediments depended on spatial variation, and the factors were different from the stations. Particularly, at the Stn. C, the sediment showed high concentration of TOC in terrestrial organic matter and smaller size particles (< 63 ㎛). These facts suggest the many small size particles and organic matter will affect the sediment environmental condition in the Stn. C.
Keywords
Surface sediment; Organic matter; Origin; Stable isotope; Tidal flat; Blue carbon;
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