Molar ratios of C, N, P of particulate matter and their vertical fluxes in the Yellow Sea

Wang, Baodong; Zhan, Run; Ming-de, XU

doi:10.1007/bf02846617

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Furthermore, terrestrial input is also regarded as an important source of sedimentary organic carbon and seasonal river runoffs might transport a large amount of terrestrial organic carbon into the bay in summer. During the kelp seeding in November, the retardation effect by the intensive kelp cultivation on water exchange disappeared and the horizontal and vertical water exchange capability was enhanced (Wang et al, 2002). The strong hydrodynamic mixing might accelerate sediment transportation and bring fresh marine organic matter to the surface sediment.…”

Section: Spatial Distribution and Seasonal Variations Of Toc In Surface Sedimentmentioning

confidence: 99%

Organic Carbon in the Surface Sediments from the Intensive Mariculture Zone of Sanggou Bay: Distribution, Seasonal Variations and Sources

Sui

Zhang

Ren

et al. 2019

J. Ocean Univ. China

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Mariculture has rapidly grown worldwide, which might greatly influence the biogeochemical cycle of organic carbon in coastal seas. In this study, several geochemical parameters, including grain size composition, sedimentary total organic carbon (TOC), total nitrogen (TN), stable carbon (δ 13 C) and nitrogen (δ 15 N) isotopic compositions, were analyzed for surface sediments collected from different mariculture zones of Sanggou Bay and in different seasons. We investigated the composition and distribution of organic matter in surface sediments and further evaluated the contribution of mariculture activities to TOC sources. The TOC and TN contents (mass percentage) in the bay were in the range of 0.14% to 1.45% and 0.03% to 0.20%, respectively. The spatial distribution indicated that sedimentary TOC and TN contents in shellfish monoculture and shellfish-kelp polyculture zones were higher than in other mariculture zones, which might be related to grain size composition and mariculture organisms. Seasonal variations of TOC contents were observed in different mariculture zones. The TOC/TN atomic ratio (C/N), δ 13 C and δ 15 N were in the ranges of 5.97 to 10.97, −21.76‰ to −13.14‰ and 2.13‰ to 8.08‰, respectively, implying that sedimentary organic matter in Sanggou Bay was the mixture of marine phytoplankton, terrestrial and maricultural sources. A simple mixing model based on δ 13 C was applied and the results indicated that the relative contributions of organic carbon sources in Sanggou Bay followed the order kelp (36.6%)  marine phytoplankton (28.7%)  shellfish bio-deposition (23.8%)  terrestrial input (10.9%). Surface sediments in Sanggou Bay were dominated by mariculture-derived organic carbon, which on average accounted for 60.4% of TOC.

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Section: Spatial Distribution and Seasonal Variations Of Toc In Surface Sedimentmentioning

confidence: 99%

Organic Carbon in the Surface Sediments from the Intensive Mariculture Zone of Sanggou Bay: Distribution, Seasonal Variations and Sources

Sui

Zhang

Ren

et al. 2019

J. Ocean Univ. China

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Sediment oxygen consumption and benthic organic carbon mineralization on the continental shelves of the East China Sea and the Yellow Sea

Song

Liu

Zhu

et al. 2016

Deep Sea Research Part II: Topical Studies in Oceanography

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Biological–physical oceanographic coupling influencing particulate organic matter in the South Yellow Sea

Guo

Yang²,

Zhai³

et al. 2022

Front. Mar. Sci.

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Using total suspended matter (TSM), particulate organic carbon (POC), and particulate nitrogen data, this study investigated the potential vertical POC flux and transport in the South Yellow Sea (SYS). The biogenic production and resuspension fraction (i.e., the proportion of resuspended particles in TSM) were estimated using an ecosystem model and a vertical mixing model. They were verified against reported sediment trap and primary productivity data. The estimates of resuspension fraction showed substantial uncertainty of 50% in summer likely owing to the potential errors of model parameter estimation and the influence of other unexplored biophysical processes such as biological degradation, upwelling, and monsoons; however, the estimates of resuspension fraction showed less uncertainty in other seasons (<20%). Few previous studies have considered the specific influence of resuspension on the dynamics and budget of particulate organic matter (POM) in the SYS. This study proposed a reasonably simple and effective method to address this issue, which was applied to systematic examination of the variation of vertical POM flux with the change of coupled biological–physical oceanographic processes along the Subei coast and in the SYS central basin. The influence of horizontal transport from the Subei coast to the central basin may cause an overestimation of >10% of the resuspension fraction. It will be necessary to acquire additional field data covering a larger spatiotemporal scale to establish an integrated network of the SYS carbon budget.

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Molar ratios of C, N, P of particulate matter and their vertical fluxes in the Yellow Sea

Cited by 3 publications

References 4 publications

Organic Carbon in the Surface Sediments from the Intensive Mariculture Zone of Sanggou Bay: Distribution, Seasonal Variations and Sources

Organic Carbon in the Surface Sediments from the Intensive Mariculture Zone of Sanggou Bay: Distribution, Seasonal Variations and Sources

Sediment oxygen consumption and benthic organic carbon mineralization on the continental shelves of the East China Sea and the Yellow Sea

Biological–physical oceanographic coupling influencing particulate organic matter in the South Yellow Sea

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