Carbon isotopic composition of suspended and sinking particulate organic matter in the northern South China Sea—From production to deposition

Liu, Kon-Kee; Kao, Shuh-Ji; Hu, Han-Chieh; Chou, Wei‐Lung; Hung, Gwo-Wei; Tseng, Chun‐Mao

doi:10.1016/j.dsr2.2007.05.010

Cited by 67 publications

(51 citation statements)

References 37 publications

(60 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, the d 13 C m value of pure marine phytoplankton could not be clearly measured. Instead, this study used a d 13 C value of -22.1% reported for phytoplankton from the South China Sea (Liu et al 2007), which is a reasonable value for marine production. For both cores, the estimated relative contribution of the C 3 terrestrial plants is illustrated in Fig.…”

Section: Organic Carbon Sources In Mangrove Sedimentsmentioning

confidence: 98%

The application of δ13C and C/N ratios as indicators of organic carbon sources and paleoenvironmental change of the mangrove ecosystem from Ba Lat Estuary, Red River, Vietnam

et al. 2011

View full text Add to dashboard Cite

In this study, two sediment cores (*70 cm) were collected from separate mangrove forests straddling the Ba Lat Estuary, Red River of northern Vietnam, to examine the origins of sedimentary organic carbon (SOC) and reconstruct the paleoenvironment. In addition, mangrove leaves and particulate organic matter were collected and measured for d 13 C to trace the origins of SOC. The cores were analyzed by high-resolution sections for d 13 C, TOC, C/N ratios, sediment grain size, water content, and porosity, with values of d 13 C, TOC, and C/N ratios ranging from -28.19 to -22.5%, 2.14-30.94 mg/g, and 10.29-18.32, respectively. The d 13 C and TOC relationship indicated that there were some small residual effects of diagenetic processes on TOC and d 13 C values in mangrove sediments. However, the shifts of d 13 C and C/N ratios from the bottom to the surface sediment of the cores explained the change in organic matter sources, with values of C/N [ 12 and d 13 C \ -25%, and C/N \ 12 and d 13 C [ -25% indicated terrestrial (e.g., mangrove litter) and marine phytoplankton sources, respectively. The covarying d 13 C, C/N ratios, and sediment grain sizes during the past 100 years in sediment cores showed that the paleoenvironment may be reconstructed into three environments (subtidal, tidal flat, and intertidal mangrove). General trends in d 13 C and C/N followed a gradual increase in the C/N ratio and a concomitant decrease in d 13 C from the subtidal, through to tidal flat, and to the intertidal mangrove. d 13 C and C/N ratios are therefore effective in measuring the continuum of environmental change in mangrove ecosystem.

show abstract

Section: Organic Carbon Sources In Mangrove Sedimentsmentioning

confidence: 98%

The application of δ13C and C/N ratios as indicators of organic carbon sources and paleoenvironmental change of the mangrove ecosystem from Ba Lat Estuary, Red River, Vietnam

et al. 2011

View full text Add to dashboard Cite

show abstract

“…After filtration, the filter with suspended POM was subsequently rinsed with 10 cm 3 0.1 mol/dm 3 HCl and 30 cm 3 Milli-Q water to remove inorganic carbonate, and then stored frozen. While in laboratory, the filter samples were dried at 60°C and wrapped into tin capsules for measurements (Philippe et al, 2001;Mino et al, 2002;Guo, Tanaka et al, 2004;Chen et al, 2006;Liu, Kao, Hu, et al, 2007;Liu, Kao, Wen, et al, 2007;Zhang et al, 2011Zhang et al, , 2012Kao et al, 2012).…”

Section: Measurements Of Poc Pn 13 C Poc and 15 N Pnmentioning

confidence: 99%

Carbon and nitrogen isotopic composition of particulate organic matter and its biogeochemical implication in the Bering Sea

et al. 2014

View full text Add to dashboard Cite

Stable carbon and nitrogen isotopic composition of particulate organic matter (POM) were measured for samples collected from the Bering Sea in 2010 summer. Particulate organic carbon (POC) and particulate nitrogen (PN) showed high concentrations in the shelf and slope regions and decreased with depth in the slope and basin, indicating that biological processes play an important role on POM distribution. The low C/N ratio and heavy isotopic composition of POM, compared to those from the Alaska River, suggested a predominant contribution of marine biogenic organic matter in the Bering Sea. The fact that 13 C and 15 N generally increased with depth in the Bering Sea basin demonstrated that organic components with light carbon or nitrogen were decomposed preferentially during their transport to deep water. However, the high 13 C and 15 N observed in shelf bottom water were mostly resulted from sediment resuspension. . 2014. Carbon and nitrogen isotopic composition of particulate organic matter and its biogeochemical implication in the Bering Sea. Acta Oceanologica Sinica, 33(12): 40-47,

show abstract

“…Within this zone, marine snow may be degraded by microbes (Sanders et al, 2014), but the process may not affect the non-degradable microplastics. Then in the depth below 1000m, the microplastics would aggregate with freshly produced particulate matters (Liu et al, 2007), the process that is affected by partial pressure of CO2 and particle size (Passow et al, 2014).…”

Section: The Potential Downward Vector Of Microplasticmentioning

confidence: 99%

Microplastic in the Deep-Sea Sediment of Southwestern Sumatran Waters

Cordova

Wahyudi

2016

Mar. Res. Indonesia

View full text Add to dashboard Cite

Indonesia is recently ranked second as the world's largest plastic wastes producer. Plastic is a very durable material that can be degraded by thermal oxidation with ultraviolet radiation and/or mechanically to smaller sizes. Degraded plastic with size less than 5mm is referred to as microplastic. Here, we investigate the pervasiveness of microplastic pollution by studying deep-sea sediments retrieved from western Sumatera in the eastern Indian Ocean during the Ekspedisi Widya Nusantara (EWIN) 2015 research cruise. The cruise, which took place between May 7-18, is part of Indonesia's contribution to the ongoing International Indian Ocean Expedition-2 (IIOE-2) campaign. Deep-sea sediments were taken at depths ranging from 66.8 to 2182m and microplastic characterization of the sediments was carried out following a modified flotation method. Our finding reveals that microplastics are present in 8 out of 10 sampling locations. We find 41 particles of microplastic in the forms of the granule (35 particles) and fiber (6 particles). Most or 20 microplastic particles are found at depths less than 500 m. Furthermore, the presence of microplastics in the western Sumatera sediments at more than 2000m deep confirms that plastics have pervaded marine environments including pristine areas despite being a relatively recent material that started being produced in the early 19th century.

show abstract

Carbon isotopic composition of suspended and sinking particulate organic matter in the northern South China Sea—From production to deposition

Cited by 67 publications

References 37 publications

The application of δ13C and C/N ratios as indicators of organic carbon sources and paleoenvironmental change of the mangrove ecosystem from Ba Lat Estuary, Red River, Vietnam

The application of δ13C and C/N ratios as indicators of organic carbon sources and paleoenvironmental change of the mangrove ecosystem from Ba Lat Estuary, Red River, Vietnam

Carbon and nitrogen isotopic composition of particulate organic matter and its biogeochemical implication in the Bering Sea

Microplastic in the Deep-Sea Sediment of Southwestern Sumatran Waters

Contact Info

Product

Resources

About