Halogenated organic pollutants in marine biota from the Xuande Atoll, South China Sea: Levels, biomagnification and dietary exposure

2017 ◽  
Vol 118 (1-2) ◽  
pp. 413-419 ◽  
Author(s):  
Yu-Xin Sun ◽  
Yong-Xia Hu ◽  
Zai-Wang Zhang ◽  
Xiang-Rong Xu ◽  
Heng-Xiang Li ◽  
...  
Keyword(s):  
South China Sea ◽  
Organic Pollutants ◽  
South China ◽  
Dietary Exposure ◽  
Marine Biota ◽  
Sea Levels ◽  
China Sea

Records of sea-level highstand over the Meghalayan age/late Holocene from uranium-series ages of beachrock in Weizhou Island, northern South China Sea

The Holocene ◽  
2021 ◽  
pp. 095968362110332
Author(s):  
Tingli Yan ◽  
Kefu Yu ◽  
Rui Wang ◽  
Wenhui Liu ◽  
Leilei Jiang
Keyword(s):  
South China Sea ◽  
Sea Level ◽  
South China ◽  
Intertidal Zone ◽  
Meteoric Water ◽  
Northern South China Sea ◽  
Water Environment ◽  
Sea Levels ◽  
China Sea ◽  
Micro Structures

Beachrock is considered a good archive for past sea-levels because of its unique formation position (intertidal zone). To evaluate sea-level history in the northern South China Sea, three well-preserved beachrock outcrops (Beigang, Gongshanbei, and Hengling) at Weizhou Island, northern South China Sea were selected to examine their relative elevation, sedimentological, mineralogical, and geochemical characteristics. Acropora branches with well-preserved surface micro-structures were selected from the beachrocks and used to determine the ages of these beachrocks via U-series dating. The results show that the beachrocks are composed of coral reef sediments, terrigenous clastics, volcanic clastics, and various calcite cements. These sediments accumulated in the intertidal zone of Weizhou Island were then cemented in a meteoric water environment. The U-series ages of beachrocks from Beigang, Gongshanbei, and Hengling are 1712–768 ca. BP, 1766–1070 ca. BP, and 1493–604 ca. BP (before 1950 AD) respectively. Their elevations are 0.91–1.16 m, 0.95–1.24 m, and 0.82–1.17 m higher than the modern homologous sedimentary zones, respectively. Therefore, we concluded that the sea-level in the Meghalayan age (1766–604 ca. BP) was 0.82–1.24 m higher than the present, and that the sea-level over this period showed a declining trend.

Deep seafloor plastics as the source and sink of organic pollutants in the northern South China Sea

2021 ◽  
Vol 765 ◽  
pp. 144228
Author(s):  
Shamik Dasgupta ◽  
Xiaotong Peng ◽  
Hengchao Xu ◽  
Kaiwen Ta ◽  
Shun Chen ◽  
...  
Keyword(s):  
South China Sea ◽  
Organic Pollutants ◽  
South China ◽  
Northern South China Sea ◽  
China Sea ◽  
Source And Sink

Organic pollutants in the central and coastal Beibu Gulf, South China Sea

2015 ◽  
Vol 101 (2) ◽  
pp. 972-985 ◽  
Author(s):  
David Kaiser ◽  
Ines Hand ◽  
DanielaUnger ◽  
Detlef E. Schulz-Bull ◽  
Joanna J. Waniek
Keyword(s):  
South China Sea ◽  
Organic Pollutants ◽  
South China ◽  
Beibu Gulf ◽  
China Sea

scholarly journals Metals in Fishes from Yongshu Island, Southern South China Sea: Human Health Risk Assessment

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Zhai Wu ◽  
Ye Xu ◽  
Minggang Cai ◽  
Sha-Yen Cheng ◽  
Huorong Chen ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Human Health Risk ◽  
Dietary Exposure ◽  
Dry Weight ◽  
Potential Ecological Risk ◽  
National Standard ◽  
Human Consumption ◽  
Southern South China Sea ◽  
China Sea

In order to assess the bioaccumulation of metals associated with gender, tissues, and their potential ecological risk, four species of fish were collected from the Yongshu Island in the Southern South China Sea. Metals and stable Pb isotopes in their tissues (muscle, gill, liver, intestine, and ovary) were determined. The concentrations of metals (mg/kg, dry weight) in these species were ND–21.60 (Cd), 1.21–4.87 (Cr), 0.42–22.4 (Cu), 1.01–51.8 (Mn), 0.30–3.28 (Ni), 6.04–1.29 × 103 (Zn), 14.89–1.40 × 103 (Fe), and 0.22–3.36 (Pb). In general, the liver and intestine absorbed more metals than the other tissues. Metals accumulation can be influenced by gender and feeding behavior and in fact, female fish and dietary exposure are more prone to accumulate metals. In addition, Pb isotopic ratios indicated that all species had significant biological fractionation, which may not make them good tracers for source identification. The metal concentrations of most samples were lower than the national standard values of the FAO (USA), which suggested that human consumption of these species may not cause health risks. However, since the surrounding areas are developing rapidly, the potential environmental risk of metals will intensify and should receive more attention.

Isomer specific determination of hexabromocyclododecanes (HBCDs) in small cetaceans from the South China Sea – Levels and temporal variation

2007 ◽  
Vol 54 (8) ◽  
pp. 1139-1145 ◽  
Author(s):  
Tomohiko Isobe ◽  
Karri Ramu ◽  
Natsuko Kajiwara ◽  
Shin Takahashi ◽  
Paul K.S. Lam ◽  
...  
Keyword(s):  
South China Sea ◽  
Temporal Variation ◽  
South China ◽  
The South China Sea ◽  
The South ◽  
Sea Levels ◽  
China Sea ◽  
Specific Determination

Organochlorines in fish from the coastal coral reefs of Weizhou Island, south China sea: Levels, sources, and bioaccumulation

Chemosphere ◽  
2019 ◽  
Vol 232 ◽  
pp. 1-8 ◽  
Author(s):  
Yang Ding ◽  
Zhiqiang Wu ◽  
Ruijie Zhang ◽  
Kefu Yu ◽  
Yinghui Wang ◽  
...  
Keyword(s):  
South China Sea ◽  
Coral Reefs ◽  
South China ◽  
Sea Levels ◽  
China Sea

Mercury pollution in fish from South China Sea: Levels, species-specific accumulation, and possible sources

2014 ◽  
Vol 131 ◽  
pp. 160-164 ◽  
Author(s):  
Jinling Liu ◽  
Xiangrong Xu ◽  
Shen Yu ◽  
Hefa Cheng ◽  
Yiguo Hong ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Mercury Pollution ◽  
Sea Levels ◽  
China Sea ◽  
Specific Accumulation ◽  
Species Specific

scholarly journals Climate-induced storminess forces major increases in future storm surge hazard in the South China Sea region

2022 ◽  
Author(s):  
Melissa Wood ◽  
Ivan D. Haigh ◽  
Quan Quan Le ◽  
Hung Nghia Nguyen ◽  
Hoang Ba Tran ◽  
...  
Keyword(s):  
South China Sea ◽  
Storm Surge ◽  
South China ◽  
Storm Surges ◽  
The South China Sea ◽  
The South ◽  
Tropical Regions ◽  
Sea Levels ◽  
China Sea ◽  
Extreme Sea Levels

Abstract. It is vital to robustly estimate the risks posed by extreme sea levels, especially in tropical regions where cyclones can generate large storm surges and observations are too limited in time and space to deliver reliable analyses. To address this limitation for the South China Sea region, we force a hydrodynamic model with a new synthetic database representing 10,000 years of past/present and future tropical cyclone activity, to investigate climate change impacts on extreme sea levels forced by storm surges (± tides). We show that, as stronger and more numerous tropical cyclones likely pass through this region over the next 30 years, both the spatial extent and severity of storm surge hazard increases. While extreme storm surge events in this location become generally a more frequent occurrence in the future, larger storm surges around Vietnam and China coastlines are projected to regionally amplify this hazard. This threatens low-lying, densely-populated areas such as the Red and Mekong River deltas, while sections of the Cambodian and Thai coastline face previously unseen storm surge hazards. These future hazards strongly signal that coastal flood management and adaptation in these areas should be reviewed for their resilience against future extreme sea levels.

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