Sources and Transport of Terrigenous Organic Matters Along the East China Sea Inner Shelf: Insights from Lignin and Alkane Biomarkers

2021 ◽  
Vol 20 (4) ◽  
pp. 866-878
Author(s):  
Xiaojie Liu ◽  
Ting Hao ◽  
Lijuan Feng ◽  
Yinli Ji ◽  
Qianqian Wang ◽  
...  
Keyword(s):  
East China Sea ◽  
East China ◽  
The East China Sea ◽  
Inner Shelf ◽  
Organic Matters ◽  
China Sea

scholarly journals Contributions of riverborne inorganic and organic matters to the benthic food web in the East China Sea as inferred from stable isotope ratios

2013 ◽  
Vol 10 (1) ◽  
pp. 1051-1081
Author(s):  
N. N. Chang ◽  
J. C. Shiao ◽  
G. C. Gong ◽  
S. J. Kao ◽  
C. H. Hsieh
Keyword(s):  
Stable Isotope ◽  
East China Sea ◽  
Food Source ◽  
East China ◽  
The East China Sea ◽  
Inner Shelf ◽  
Organic Matters ◽  
Δ13c Values ◽  
China Sea ◽  
Benthic Consumers

Abstract. Coastal areas adjoining rivers are nourished by both the riverborne nutrients and organic matters. Annually, the East China Sea (ECS) receives large quantities of particulate organic carbon transported from the Changjiang (Yangtze River), as well as nutrients, which have brought about high primary production in the ECS. This study evaluated the respective contributions of terrigenous organic matters (allochthonous food source) and nutrient-induced marine production (autochthonous food source) to the ECS benthic ecosystem by analyzing the stable isotope compositions for zooplankton, benthic crustacea and demersal fish. Zooplankton exhibited consistently higher δ13C values (−21.31‰ ~ −19.22‰) in the inner shelf than in the outer shelf. The δ13C signals of fish (−19.64‰ ~ −13.46‰) and crustacea (−18.87‰ ~ −15.00‰) showed strong reliance on the marine production across the ECS continental shelf, regardless of distance from the shore. Moreover, the benthic crustacea and fish exhibited significantly higher δ13C values in the highly productive inshore sites and the δ13C values decreased seawards, implying a higher intrusion of atmospheric CO2 and lower photosynthetic fractionation due to algal blooming in the inner shelf. The δ13C values of fish also showed significant positive correlations with the concentration of surface chlorophyll a and nitrogen. Riverborne nutrients closely linked marine benthic consumers to the terrestrial watershed and tightly coupled the pelagic and benthic ecosystems in the ECS. The stable isotope compositions of benthic consumers can act as an indicator for pelagic trophic status. The future research combining analyses of stable isotope and community structure may improve assessment on the balance between contribution and risk of phytoplankton blooms.

THE COLOR REFLECTANCE FEATURES OF THE SEDIMENTS IN MUD AREA ON THE INNER SHELF OF THE EAST CHINA SEA AND ITS PALEOCLIMATIC IMPLICATIONS FOR RECENT 2 ka

2013 ◽  
Vol 32 (6) ◽  
pp. 149-158 ◽  
Author(s):  
Taoyu XU ◽  
Xuefa SHI ◽  
Shengfa LIU ◽  
Shuqing QIAO ◽  
Gang YANG ◽  
...  
Keyword(s):  
East China Sea ◽  
East China ◽  
The East China Sea ◽  
Inner Shelf ◽  
China Sea ◽  
Mud Area

scholarly journals Variation in the Current Shear Front and Its Potential Effect on Sediment Transport Over the Inner Shelf of the East China Sea in Winter

2018 ◽  
Vol 123 (11) ◽  
pp. 8264-8283 ◽  
Author(s):  
S. D. Liu ◽  
L. L. Qiao ◽  
G. X. Li ◽  
J. H. Shi ◽  
L. L. Huang ◽  
...  
Keyword(s):  
Sediment Transport ◽  
East China Sea ◽  
Potential Effect ◽  
East China ◽  
The East China Sea ◽  
Inner Shelf ◽  
China Sea ◽  
Shear Front

scholarly journals Holocene abrupt climate fluctuations: Sedimentary record from the inner-shelf mud area of the East China Sea

2015 ◽  
Vol 60 (4) ◽  
pp. 411-419 ◽  
Author(s):  
ZhiWei ZHU ◽  
ZhiMin JIAN ◽  
ShuQing QIAO ◽  
ShengFa LIU ◽  
Peng CAO ◽  
...  
Keyword(s):  
East China Sea ◽  
East China ◽  
The East China Sea ◽  
Sedimentary Record ◽  
Inner Shelf ◽  
Climate Fluctuations ◽  
China Sea ◽  
Mud Area

The influence of season and Typhoon Morakot on the distribution of diatoms in surface sediments on the inner shelf of the East China Sea

2019 ◽  
Vol 146 ◽  
pp. 59-74 ◽  
Author(s):  
Min Chen ◽  
Yunhai Li ◽  
Hongshuai Qi ◽  
Liang Wang ◽  
Aimei Zhang ◽  
...  
Keyword(s):  
East China Sea ◽  
Surface Sediments ◽  
East China ◽  
The East China Sea ◽  
Typhoon Morakot ◽  
Inner Shelf ◽  
China Sea

Recent sedimentary record of storms and floods within the estuarine-inner shelf region of the East China Sea

The Holocene ◽  
2016 ◽  
Vol 27 (3) ◽  
pp. 439-449 ◽  
Author(s):  
Yifei Zhao ◽  
Xinqing Zou ◽  
Jianhua Gao ◽  
Chenglong Wang
Keyword(s):  
Grain Size ◽  
East China Sea ◽  
Yangtze River ◽  
Extreme Weather Events ◽  
East China ◽  
The Yangtze River ◽  
Flood Events ◽  
The East China Sea ◽  
Inner Shelf ◽  
China Sea

Although extreme weather events make a strong impact in shallow marine sedimentary environments, there is still a paucity of past records for the Holocene period. Estuarine-inner shelf mud regions deposited from rivers that transport a large amount of suspended sediment represent an important archive of the Holocene. Two cores (S5-2 and JC07) retrieved from the estuarine-inner shelf regions of the East China Sea provided an opportunity to use sensitive grain size and 210Pb dating to reconstruct a history of extreme weather events in the Yangtze River basin. Here, we show that the average sedimentation rates of the two cores, S5-2 (1930–2013) and JC07 (1910–2013), were estimated to be 3.11 and 1.56 cm/yr, respectively. The results indicated that sediment supply played an important role in sedimentation of the estuarine-inner shelf mud region of the East China Sea. Sand content strongly increased in the late 1980s, a result of downstream riverbed erosion of the Yangtze River and submerged deltas. The grain size versus the standard deviation method was used to identify grain-size intervals with the highest variability along a sedimentary sequence. The Yangtze estuary mud area coarse population correlated well with historical literature on Yangtze River floods since AD 1930. Extreme storm events corresponded well with historical literature on the Zhe-Min mud region of the East China Sea. The spectral analyses of the sample core coastal population demonstrated that flood and storm events were consistent with a ~3–8 a periodic change of El Niño Southern Oscillation (ENSO), suggesting that the flood events usually follow ENSO years in the Yangtze River. Consequently, sediment records preserved in the two cores demonstrated different sedimentary responses to Yangtze River floods and storms, which is important to recover centennial scale flood events, to infer extreme precipitation, and to understand climate change in the estuarine-inner shelf of the East China Sea. Nevertheless, more efforts are still needed to simulate paleo-flood and predict future flood events in the context of global warming.

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