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Nonmetric multidimensional scaling and adverse effects on aquatic biota of polycyclic aromatic hydrocarbons in sediments: A case study of a typical aquaculture wetland, China

文献类型： 外文期刊

作者： Gu, Yang-Guang 1 ; Ke, Chang-Liang 1 ; Gao, Yan-Peng 2 ; Liu, Qi 1 ; Li, Ya-Fang 1 ;

作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China

2.Guangdong Univ Technol, Inst Environm Hlth & Pollut Control, Guangzhou 510006, Peoples R China

3.Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou 510006, Peoples R China

4.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Peoples R China

5.Minist Agr, Key Lab Open Sea Fishery Dev, Guangzhou 510300, Peoples R China

6.Minist Agr, Key Lab Aquat Prod Proc, Guangzhou 510300, Peoples R China

关键词： Aquaculture wetland; Polycyclic aromatic hydrocarbons; Nonmetric multidimensional scaling; Rongjiang River

期刊名称：ENVIRONMENTAL RESEARCH （ 影响因子：6.498； 五年影响因子：6.824 ）

ISSN： 0013-9351

年卷期： 2020 年 182 卷

页码：

收录情况： SCI

摘要： Aquaculture wetlands, particularly those located within urban areas, are fragile ecosystems which are generally heavily impacted by urban and aquaculture activities. However, there are, to date, no reports on adverse effects related to polycyclic aromatic hydrocarbons (PAHs) in sediments from aquaculture wetlands in metropolitan areas. The characterization, sources, and incidence of adverse effects on aquatic biota of PAHs were studied in the riverine and estuarine sediments of the Rongjiang River in an aquaculture wetland in Chaoshan metropolis. The total PAH concentrations varied from 46.0 to 1665.2 ng/g (dry weight), with a mean of 246.4 ng/g, indicating lower concentrations than those of other comparable rivers and estuaries worldwide. High-molecular-weight PAHs were the major PAH species, with fluorene, benzo(b)fluoranthene, and benzo(a)pyrene as the dominant components. These PAHs are likely to be mainly derived from oil and coal/biomass combustion. Probability risk assessment indicated a moderate PAH ecological risk in the Rongjiang River and its estuary (RJE). Accordingly, a comprehensive management plan should be established to ensure sustainable aquaculture wetlands.

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