scholarly journals Riverine input of organic carbon and nitrogen in water-sediment system from the Yellow River estuary reach to the coastal zone of Bohai Sea, China

2018 ◽  
Vol 157 ◽  
pp. 1-9 ◽  
Author(s):  
Chuanyuan Wang ◽  
Yingchun Lv ◽  
Yuanwei Li
Keyword(s):  
Organic Carbon ◽  
Coastal Zone ◽  
Bohai Sea ◽  
Yellow River ◽  
River Estuary ◽  
Yellow River Estuary ◽  
The Yellow River ◽  
Riverine Input ◽  
Carbon And Nitrogen

scholarly journals Natural distinction of carbon and nitrogen isotopic niches in common fish species for diverse marine biotopes off the Yellow River estuary and adjacent sea areas

2020 ◽  
Author(s):  
Pei Qu ◽  
Min Pang ◽  
Fangyuan Qu ◽  
Zhao Li ◽  
Meng Xiao ◽  
...  
Keyword(s):  
Yellow River ◽  
River Estuary ◽  
Fish Communities ◽  
Open Water ◽  
Yellow River Estuary ◽  
The Yellow River ◽  
Laizhou Bay ◽  
Isotopic Niche ◽  
Carbon And Nitrogen ◽  
Stable Isotopic

Stable isotope analysis is a universally recognized and efficient method of indicating trophic relationships that is widely applied in research. However, variations in natural isotopic abundance may lead to inaccuracies due to the effects of complex environmental conditions. This research compared the carbon and nitrogen isotopic niches of fish communities between diverse biotopes around the Yellow River estuary and adjacent sea areas, with the aim of revealing distinctions in stable isotopic niche metrics, trophic positions, and feeding preferences. Stable isotopic niche results indicated that the communities of estuarine habitants were compatible in most study biotopes, and may provide a corridor for energy and material transportation between Laizhou Bay and the open water. Local biocoenosis was embodied in the wider isotopic niche corresponding to frequent environmental changes and abiotic gradients. This implied that they used various food sources to adapt to the fickle environment, including marine-terrestrial boundaries and the estuary. Our analysis of the food source contribution indicated that allochthonous sources were considered major energy sources in estuarine areas directly affected by Yellow River-diluted water, while autochthonous benthic and pelagic producers dominated carbon input into the food web in Laizhou Bay and the open water. A significant variation in the fish δN characteristic was found within estuarine adjacent regions, so, together with the results from previous studies, we deemed the local high concentration of dissolved inorganic nitrogen as the original trigger of the abnormal δN characteristic in fishes via a transport process along food chains. These results provide a new perspective on the natural distinction of carbon and nitrogen isotopic niches. The detailed data reported here enhance our understanding of variations in fish communities in estuarine ecosystems.

scholarly journals Distribution and sources of organic matter in surface sediments of Bohai Sea near the Yellow River Estuary, China

2015 ◽  
Vol 165 ◽  
pp. 128-136 ◽  
Author(s):  
Dongyan Liu ◽  
Xin Li ◽  
Kay-Christian Emeis ◽  
Yujue Wang ◽  
Pierre Richard
Keyword(s):  
Organic Matter ◽  
Bohai Sea ◽  
Surface Sediments ◽  
Yellow River ◽  
River Estuary ◽  
Yellow River Estuary ◽  
The Yellow River

scholarly journals The Accumulation and Seasonal Dynamic of the Soil Organic Carbon in Wetland of the Yellow River Estuary, China

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Xianxiang Luo ◽  
Leyun Wang ◽  
Meng Dun ◽  
Jianqiang Yang ◽  
Zhenyu Wang
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Yellow River ◽  
River Estuary ◽  
Influential Factors ◽  
Carbon Accumulation ◽  
Yellow River Estuary ◽  
The Yellow River ◽  
Surface Soils ◽  
Study Results

The wetland of the Yellow River estuary is a typical new coastal wetland in northern China. It is essential to study the carbon pool and its variations for evaluating the carbon cycle process. The study results regarding the temporal-spatial distribution and influential factors of soil organic carbon in four typical wetlands belonging to the Yellow River estuary showed that there was no significant difference in the contents of the surface soil TOC to the same season among the four types of wetlands. For each type of wetlands, the TOC content in surface soils was significantly higher in October than that in both May and August. On the whole, the obvious differences in DOC contents in surface soils were not observed in the different wetland types and seasons. The peak of TOC appeared at 0–10 cm in the soil profiles. The contents of TOC and DOC were significantly higher in salsa than those in reed, suggesting that the rhizosphere effect of organic carbon in salsa was more obvious than that in reed. The results of the principal component analysis showed that the nitrogen content, salinity, bulk density, and water content were dominant influential factors for organic carbon accumulation and seasonal variation.

Tracking lead origin in the Yellow River Estuary and nearby Bohai Sea based on its isotopic composition

2015 ◽  
Vol 163 ◽  
pp. 99-107 ◽  
Author(s):  
Ning-jing Hu ◽  
Peng Huang ◽  
Ji-hua Liu ◽  
Xue-fa Shi ◽  
De-yi Ma ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
Bohai Sea ◽  
Yellow River ◽  
River Estuary ◽  
Yellow River Estuary ◽  
The Yellow River
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