Available forms of nutrients and heavy metals control the distribution of microbial phospholipid fatty acids in sediments of the Three Gorges Reservoir, China

doi:10.1007/s11356-017-0824-2

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	Available forms of nutrients and heavy metals control the distribution of microbial phospholipid fatty acids in sediments of the Three Gorges Reservoir, China
	Sun, Hongyang 2; Wu, Yanhong 2; Bing, Haijian 2; Zhou, Jun 2; Li, Na 1,2
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2018-02-01
卷号	25 期号:6 页码:5740-5751
关键词	Bottom sediments Microbial community Phospholipid fatty acids Nutrients Heavy metal
ISSN号	0944-1344
DOI	10.1007/s11356-017-0824-2
产权排序	2
文献子类	Article
英文摘要	The construction of the Three Gorges Reservoir (TGR) as well as the development of local industry and agriculture not only had tremendous impacts on the environment but also affected human health. Although water, soil, and air in the TGR have been well studied for environmental risk assessment, very little information is available on benthic sediments and microorganisms. In this study, sedimentary samples were collected along the main stream of the TGR to examine microbial phospholipid fatty acids (PLFA) and relevant variables (e.g., nutrients and heavy metals) after the full operation of the TGR. The results showed that there were prominent trends (increase or decrease) of sedimentary PLFAs and properties from downstream to upstream. Bacteria-specific PLFA decreased toward the dam, while fungi-specific PLFA did not show any significant trend. The PLFA ratio of fungi to bacteria (F/B) increased along the mainstream. The total PLFA concentration, which represents the microbial biomass, decreased significantly toward the dam. Upstream and downstream sampling points were clearly distinguished by PLFA ordination in the redundancy analysis (RDA). That finding showed microbial PLFAs to have an obvious distribution pattern (increase or decrease) in the TGR. The PLFA distribution was markedly controlled by nutrients and heavy metals, but nutrients were more important. Moreover, among nutrients, Bio-P, NH4 (+)-N, NO3 (-)-N, and DOC were more important than TP, TN, TOC, and pH in controlling PLFA distribution. For heavy metals, Tl, V, Mo, and Ni were more important than Zn, Cu, Cd, and Pb. These findings suggested that Tl, V, Mo, and Ni should not be ignored to guard against their pollution in the TGR, and we should pay attention to them and make them our first priority. This study highlighted that the construction of the TGR changed riverine environments and altered microbial communities in sediments by affecting sedimentary properties. It is a reminder that the microbial ecology of sediment as an indicator should be considered in assessing the eco-risk of the TGR.
学科主题	Environment ; Ecology
URL标识	查看原文
WOS关键词	LEVEL FLUCTUATION ZONE ; CHANGJIANG YANGTZE-RIVER ; COMMUNITY COMPOSITION ; BACTERIAL COMMUNITIES ; ENVIRONMENTAL-FACTORS ; ORGANIC-CARBON ; WATER ; BIOMASS ; DIVERSITY ; POLLUTION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000425971700063
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/30337]
专题	公共实验与分析中心
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Alpine Ecosyst Observat & Expt Stn Gongga Mt, Key Lab Mt Surface Proc & Ecol Regulat, 9 Block 4,Renminnanlu Rd, Chengdu 610041, Sichuan, Peoples R China;
推荐引用方式 GB/T 7714	Sun, Hongyang,Wu, Yanhong,Bing, Haijian,et al. Available forms of nutrients and heavy metals control the distribution of microbial phospholipid fatty acids in sediments of the Three Gorges Reservoir, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(6):5740-5751.
APA	Sun, Hongyang,Wu, Yanhong,Bing, Haijian,Zhou, Jun,&Li, Na.(2018).Available forms of nutrients and heavy metals control the distribution of microbial phospholipid fatty acids in sediments of the Three Gorges Reservoir, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(6),5740-5751.
MLA	Sun, Hongyang,et al."Available forms of nutrients and heavy metals control the distribution of microbial phospholipid fatty acids in sediments of the Three Gorges Reservoir, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.6(2018):5740-5751.