Quantification of Purification Ability for Organic Matter at Natural and Constructed Tidal Flats and the Role for Purification in Hiroshima Bay.

Lee, Jeoung gyu; Nishijima, Wataru; Mukai, Tetsuo; Takimoto, Kazuto; Seiki, Tohru; Hiraoka, Kiyonori; Okada, Minoru

doi:10.2965/jswe.21.149

Cited by 9 publications

(2 citation statements)

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“…Because of the terrestrial-derived OM with high C/N tends to be less, and chemical properties of OM can affect its consumption and abundance in sediment of estuarine tidal flats. Whereas, according to the some studies, it indicated that the dynamic of OM is influenced by the benthic microorganisms (e.g., bacteria and benthic microalgae) in estuarine sediment, due to high productivity and re-mineralization of OM [9,10]. For instance, according to Lee et al [9] in 1998, the degraded OM amount by bacteria in Hiroshima Bay tidal flat indicated about 5-14 times more than macrobenthos.…”

Section: Introductionmentioning

confidence: 99%

“…Whereas, according to the some studies, it indicated that the dynamic of OM is influenced by the benthic microorganisms (e.g., bacteria and benthic microalgae) in estuarine sediment, due to high productivity and re-mineralization of OM [9,10]. For instance, according to Lee et al [9] in 1998, the degraded OM amount by bacteria in Hiroshima Bay tidal flat indicated about 5-14 times more than macrobenthos. Thus, benthic microorganisms play important roles in the sediment environments, but little is known concerning its role and fate of microorganism in sediment OM dynamic [11,12].…”

Section: Introductionmentioning

confidence: 99%

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Chemical Properties of Sediment in Nanakita Estuarine Tidal Flat: Estimation of Sedimentary Organic Matter Origin by Stable Isotope and Fatty Acid

Shin

Aikawa²,

Nishimura

2012

Environmental Engineering Research

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The spatial variation of organic matter sources in tidal flat sediment of the Nanakita River estuary, involving Gamo lagoon on the northeast coast of Honshu Island, Japan, was examined using carbon stable isotopes and fatty acid biomarkers. The spatial variation of total organic carbon (TOC) contents and δ 13 C values were highly variable in between the stations, such as sandy flat (1.3 mg/g,-21.0‰), sand-muddy flat (2.6 mg/g,-21.9‰), and muddy flat (24.9 mg/g,-25.9‰), respectively. Particularly, at the muddy flat, high TOC content and low δ 13 C value of the sediments indicated that the surface sediment was composed largely of terrestrial organic matter. Whereas, at the sandy flat and sand-muddy flat, the high ratios of diatom and bacteria biomarkers indicated the high contribution of abundant microorganism along with marine organic matter in sediment composition. From these results, it considered that the amount and origin of transported sedimentary organic matter indicated different characteristics in this study stations.

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Section: Introductionmentioning

confidence: 99%