Spatial and seasonal variations in the planktonic ciliate community and its relationship with environmental factors in Daya Bay, the South China Sea

2017 ◽  
Vol 46 (2) ◽  
Author(s):  
Fengxia Wu ◽  
Jianrong Huang ◽  
Zhanhui Qi ◽  
Honghui Huang
Keyword(s):  
South China Sea ◽  
South China ◽  
Seasonal Variations ◽  
The South China Sea ◽  
Daya Bay ◽  
China Sea ◽  
Ciliate Community ◽  
Ciliate Abundance ◽  
Ciliate Species ◽  
Planktonic Ciliate

AbstractPlanktonic ciliate composition, abundance and its response to environmental change were investigated during four seasons (winter of 2013, spring, summer and autumn of 2014) in Daya Bay, the South China Sea. A total of 41 species belonging to eight orders were identified, 14 of which were dominant. Planktonic ciliate communities showed a distinct seasonal pattern in ciliate abundance and a clear seasonal shift in the taxonomic composition. The largest number of ciliate species occurred in summer, whereas the highest abundance peaked in spring, mainly due to oligotrichids. In terms of spatial distribution, ciliate species were abundant in the area of artificial reefs, and ciliate abundance was higher in the Dapeng Cove aquaculture area and lower at the Daya Bay Nuclear Power Station. Clustering analysis demonstrated that the seasonal variations of the ciliate community structure were more obvious than spatial variations. Multivariate and univariate analyses illustrated that ciliate abundance was significantly correlated with the water nutrient level and chlorophyll-

A study of intra-seasonal variations in the subsurface water temperatures in the South China Sea

2019 ◽  
Vol 38 (4) ◽  
pp. 97-105 ◽  
Author(s):  
Zhan Lian ◽  
Baonan Sun ◽  
Zexun Wei ◽  
Yonggang Wang ◽  
Xinyi Wang
Keyword(s):  
South China Sea ◽  
South China ◽  
Seasonal Variations ◽  
The South China Sea ◽  
Subsurface Water ◽  
The South ◽  
China Sea

scholarly journals Interannual 14C Variations During 1977–1998 Recorded in Coral from Daya Bay, South China Sea

Radiocarbon ◽  
2004 ◽  
Vol 46 (2) ◽  
pp. 595-601 ◽  
Author(s):  
C D Shen ◽  
W X Yi ◽  
K F Yu ◽  
Y M Sun ◽  
Y Yang ◽  
...  
Keyword(s):  
South China Sea ◽  
Correlation Coefficient ◽  
South China ◽  
Interannual Variation ◽  
Southern Oscillation ◽  
Thermal Structure ◽  
The South China Sea ◽  
Daya Bay ◽  
The South ◽  
China Sea

Twenty-two annually banded samples of coral from 1977 to 1998 were collected from Daya Bay, South China Sea, and bomb 14C concentrations were determined. The interannual variation of coral Δ14C is controlled mainly by oceanic factors. In ENSO years, the coastwise upwelling current of the South China Sea has been intensified; hence, the coral Δ14C displays its minimum value. The interannual variation curve of Δ14C in coral bears a relationship with the Southern Oscillation Index (SOI) curves: the correlation coefficient between Δ14C and (SOI)w is 0.43 and the correlation coefficient between Δ14C and (SOI)y is 0.27. The coral Δ14C has no remarkable response to the variation of solar radiation energy. In the past 20 yr or so, the general situation and oceanic thermal structure of the South China Sea are still stable even though interannual variations in atmosphere-sea interaction and upwelling current driven by the tropical energy have occurred.

Taxonomic diversity of fish species in the Daya Bay, the South China Sea

2012 ◽  
Vol 35 (6) ◽  
pp. 863-870 ◽  
Author(s):  
Na-na LI ◽  
Li-na DONG ◽  
Yong-zhen LI ◽  
Hong AI ◽  
Xia LI ◽  
...  
Keyword(s):  
South China Sea ◽  
Fish Species ◽  
South China ◽  
Taxonomic Diversity ◽  
The South China Sea ◽  
Daya Bay ◽  
The South ◽  
China Sea

Trajectory and weathering of oil spill in Daya bay, the South China sea

2020 ◽  
Vol 267 ◽  
pp. 115562
Author(s):  
Zhu Zhen ◽  
Daming Li ◽  
Yanqing Li ◽  
Shou Chen ◽  
Shilong Bu
Keyword(s):  
South China Sea ◽  
Oil Spill ◽  
South China ◽  
The South China Sea ◽  
Daya Bay ◽  
The South ◽  
China Sea

scholarly journals High-Resolution Observations of Upwelling and Front in Daya Bay, South China Sea

2021 ◽  
Vol 9 (6) ◽  
pp. 657
Author(s):  
Huabin Mao ◽  
Yongfeng Qi ◽  
Chunhua Qiu ◽  
Zhenhua Luan ◽  
Xia Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
South China Sea ◽  
South China ◽  
Water Environment ◽  
The South China Sea ◽  
Daya Bay ◽  
Strong Mixing ◽  
The South ◽  
China Sea ◽  
Order Of Magnitude

Field observations of coastal regions are important for studying physical and biological features. Observations of high-resolution coastal phenomena were obtained by using a tow-yo instrument and a turbulence profiler at Daya Bay in the South China Sea in October 2015. Details of coastal phenomena, including warm water from a nuclear plant discharge, as well as an upwelling, and front, were obtained. The upwelling, with a width of 2 km, resulted in saltier and more turbid water near the bottom, with low chlorophyll-a and dissolved oxygen contents being transported upward to the surface layer and changing the local water environment. The front, with the lateral salinity variations as large as 0.7 psu across 1 km, was active at the water intersection of the South China Sea and Daya Bay. Such events commonly form during weak stratification periods in autumn. Continuous measurements from VMP-250 profiler over circa 22 h revealed active fronts and an averaged dissipation rate of 8 × 10−8 W/kg and diffusivity of 5.8 × 10−5 m2/s (i.e., one order of magnitude larger than in the open ocean) in the thermocline. The front was accompanied by strong mixing, indicating that it had formed at the intersection of different water masses and played an important role in energy dissipation in Daya Bay, further affecting the distribution of ecological elements.

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