Natural attenuation of contaminated marine sediments from an old floating dock Part II: Changes of sediment microbial community structure and its relationship with environmental variables
文献类型：期刊论文
| 作者 | Wang, Ya-Fen1,2; Tam, Nora Fung-Yee1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2012-04-15 |
| 卷号 | 423期号:-页码:95-103 |
| 关键词 | Microbial community EL-FAME analysis PAH Natural attenuation Ordination analysis |
| ISSN号 | 0048-9697 |
| 通讯作者 | Tam, NFY (reprint author), City Univ Hong Kong, Dept Biol & Chem, Tat Chee Ave, Hong Kong, Hong Kong, Peoples R China. |
| 中文摘要 | Changes of microbial community structure and its relationship with various environmental variables in surface marine sediments were examined for a one-year period after the removal of an old floating dock in Hong Kong SAR, South China. Temporal variations in the microbial community structure were clearly revealed by principal component analysis (PCA) of the microbial ester-linked fatty acid methyl ester (EL-FAME) profiles. The most obvious shift in microbial community structure was detected 6 months after the removal of the dock, although no significant decline in the levels of pollutants could be detected. As determined by EL-FAME profiles, the microbial diversity recovered and the predominance of gram-negative bacteria was gradually replaced by gram-positive bacteria and fungi in the impacted stations. With redundancy analysis (RDA), the concentration of total polycyclic aromatic hydrocarbons (PAHs) was found to be the second important determinant of microbial community structure, next to Time. The relative abundance of 18:1 omega 9c and hydroxyl fatty acids enriched in the PAH hot spots, whereas 16:1 omega 9 and 18:1 omega 9t were negatively correlated to total PAH concentration. The significant relationships observed between microbial EL-FAME profiles and pollutants, exampled by PAHs in the present study, suggested the potential of microbial community analysis in the assessment of the natural attenuation process in contaminated environments. (C) 2012 Elsevier B.V. All rights reserved. |
| 英文摘要 | Changes of microbial community structure and its relationship with various environmental variables in surface marine sediments were examined for a one-year period after the removal of an old floating dock in Hong Kong SAR, South China. Temporal variations in the microbial community structure were clearly revealed by principal component analysis (PCA) of the microbial ester-linked fatty acid methyl ester (EL-FAME) profiles. The most obvious shift in microbial community structure was detected 6 months after the removal of the dock, although no significant decline in the levels of pollutants could be detected. As determined by EL-FAME profiles, the microbial diversity recovered and the predominance of gram-negative bacteria was gradually replaced by gram-positive bacteria and fungi in the impacted stations. With redundancy analysis (RDA), the concentration of total polycyclic aromatic hydrocarbons (PAHs) was found to be the second important determinant of microbial community structure, next to Time. The relative abundance of 18:1 omega 9c and hydroxyl fatty acids enriched in the PAH hot spots, whereas 16:1 omega 9 and 18:1 omega 9t were negatively correlated to total PAH concentration. The significant relationships observed between microbial EL-FAME profiles and pollutants, exampled by PAHs in the present study, suggested the potential of microbial community analysis in the assessment of the natural attenuation process in contaminated environments. (C) 2012 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | POLYCYCLIC AROMATIC-HYDROCARBONS ; FATTY-ACID PROFILES ; SUBSTRATE UTILIZATION PATTERNS ; HEAVY-METAL CONTAMINATION ; SEASONAL-VARIATION ; LIPID ANALYSIS ; SOIL ; BIOMASS ; BACTERIAL ; BIOREMEDIATION |
| 收录类别 | SCI |
| 资助信息 | University Grants Committee of the Hong Kong SAR, China[AoE/P-04/2004] |
| 语种 | 英语 |
| WOS记录号 | WOS:000303231200012 |
| 公开日期 | 2012-09-25 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/17009]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.City Univ Hong Kong, Dept Biol & Chem, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ya-Fen,Tam, Nora Fung-Yee. Natural attenuation of contaminated marine sediments from an old floating dock Part II: Changes of sediment microbial community structure and its relationship with environmental variables[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2012,423(-):95-103. |
| APA | Wang, Ya-Fen,&Tam, Nora Fung-Yee.(2012).Natural attenuation of contaminated marine sediments from an old floating dock Part II: Changes of sediment microbial community structure and its relationship with environmental variables.SCIENCE OF THE TOTAL ENVIRONMENT,423(-),95-103. |
| MLA | Wang, Ya-Fen,et al."Natural attenuation of contaminated marine sediments from an old floating dock Part II: Changes of sediment microbial community structure and its relationship with environmental variables".SCIENCE OF THE TOTAL ENVIRONMENT 423.-(2012):95-103. |
入库方式： OAI收割
来源：水生生物研究所
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