Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL076211 |
Plant Wax n-Alkane and n-Alkanoic Acid Signatures Overprinted by Microbial Contributions and Old Carbon in Meromictic Lake Sediments | |
Makou, Matthew1; Eglinton, Timothy2; McIntyre, Cameron2,3,4; Montlucon, Daniel2; Antheaume, Ingrid1; Grossi, Vincent1 | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:1049-1057 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Switzerland; Scotland |
英文摘要 | Specific n-alkanes and n-alkanoic acids are commonly used as biomarkers in paleoenvironmental reconstruction, yet any individual homologue may originate from multiple biological sources. Here we improve source and age controls for these compounds in meromictic systems by measuring the radiocarbon (C-14) ages of specific homologues preserved in twentieth century Lake Pavin (France) sediments. In contrast to many studies, C-14 ages generally decreased with increasing carbon chain length, from 7.3 to 2.6 ka for the C-14-C-30 n-alkanoic acids and from 9.2 to 0.3 ka for the C-21-C-33 n-alkanes. Given a known hard water effect, these values suggest that aquatic microbial sources predominate and contributed to most of the homologues measured. Only the longest chain n-alkanes exclusively represent inputs of higher plant waxes, which were previously sequestered in soils over centennial to millennial timescales prior to transport and deposition. These findings suggest that biomarker source and age should be carefully established for lacustrine settings. |
英文关键词 | n-alkane n-alkanoic acid compound specific radiocarbon analysis plant wax biomarker meromictic lake |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300063 |
WOS关键词 | SANTA-MONICA BASIN ; COMPOUND-SPECIFIC DELTA-C-14 ; LIPID BIOMARKERS ; CLIMATE-CHANGE ; LAC-PAVIN ; ORGANIC-CARBON ; RADIOCARBON ANALYSIS ; VEGETATION HISTORY ; SURFACE SEDIMENT ; FATTY-ACIDS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28768 |
专题 | 气候变化 |
作者单位 | 1.Univ Lyon 1, Lab Geol Lyon, CNRS, UMR 5276, Villeurbanne, France; 2.Swiss Fed Inst Technol, Geol Inst, Zurich, Switzerland; 3.Swiss Fed Inst Technol, Lab Ion Beam Phys, Zurich, Switzerland; 4.Scottish Univ Environm Res Ctr, E Kilbride, Lanark, Scotland |
推荐引用方式 GB/T 7714 | Makou, Matthew,Eglinton, Timothy,McIntyre, Cameron,et al. Plant Wax n-Alkane and n-Alkanoic Acid Signatures Overprinted by Microbial Contributions and Old Carbon in Meromictic Lake Sediments[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):1049-1057. |
APA | Makou, Matthew,Eglinton, Timothy,McIntyre, Cameron,Montlucon, Daniel,Antheaume, Ingrid,&Grossi, Vincent.(2018).Plant Wax n-Alkane and n-Alkanoic Acid Signatures Overprinted by Microbial Contributions and Old Carbon in Meromictic Lake Sediments.GEOPHYSICAL RESEARCH LETTERS,45(2),1049-1057. |
MLA | Makou, Matthew,et al."Plant Wax n-Alkane and n-Alkanoic Acid Signatures Overprinted by Microbial Contributions and Old Carbon in Meromictic Lake Sediments".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):1049-1057. |
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