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| DOI | 10.1007/s10533-020-00639-w |
| Influence of earthworms on apolar lipid features in soils after 1 year of incubation | |
| Nguyen Tu T.T.; Vidal A.; Quénéa K.; Mendez-Millan M.; Derenne S. | |
| 发表日期 | 2020 |
| ISSN | 1682563 |
| 卷号 | 147期号:3 |
| 英文摘要 | Molecular and compound specific isotope compositions of apolar lipids were characterized in soil mesocosms incubated for 1 year with or without 13C-labelled plant residues and earthworms, in order to investigate, at the molecular scale, the effect of earthworms on the fate of organic matter (OM) in soils. Molecular and isotope composition of long chain alkanes in casts confirmed that earthworms preferentially ingest soil fractions rich in plant debris. Apolar lipid specific isotope composition allowed calculation of the proportion of carbon derived from the labelled residues (Clab). Casts displayed higher Clab values than surrounding soil while soil without earthworm exhibited intermediate Clab. The odd-over-even predominance (OEP) of alkanes suggested they are probably less degraded in casts than in the surrounding soil. Taken together, OEP and Clab values suggested that besides high incorporation of plant residues, earthworms may also favor the preservation of plant apolar lipids in their casts. Additionally, chain length and isotope pattern of alkanes further suggested root lipids were probably less degraded than shoot lipids. High 13C-incorporation level for the bacterial biomarker hopene provided evidence for intense recycling of plant OM and suggested further contribution of bacterial necromass to soil OM. © 2020, Springer Nature Switzerland AG. |
| 英文关键词 | 13C-labelling; Cast; Earthworms; Lipids; Organic matter; Soil |
| 学科领域 | biomarker; earthworm; isotopic composition; lipid; soil microorganism; soil organic matter; Bacteria (microorganisms) |
| 语种 | 英语 |
| scopus关键词 | biomarker; earthworm; isotopic composition; lipid; soil microorganism; soil organic matter; Bacteria (microorganisms) |
| 来源期刊 | Biogeochemistry
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/120379 |
| 作者单位 | Sorbonne Université, CNRS, EPHE, UMR 7619 Metis, Paris, 75005, France; Lehrstuhl für Bodenkunde, TU München, Emil-Ramann-Strasse 2, Freising, 85356, Germany; IRD, Sorbonne Université, CNRS, MNHN, IPSL, LOCEAN, Bondy, France; Sorbonne Université, CC 105, 4 place Jussieu, Paris cedex 05, 75252, France |
| 推荐引用方式 GB/T 7714 | Nguyen Tu T.T.,Vidal A.,Quénéa K.,et al. Influence of earthworms on apolar lipid features in soils after 1 year of incubation[J],2020,147(3). |
| APA | Nguyen Tu T.T.,Vidal A.,Quénéa K.,Mendez-Millan M.,&Derenne S..(2020).Influence of earthworms on apolar lipid features in soils after 1 year of incubation.Biogeochemistry,147(3). |
| MLA | Nguyen Tu T.T.,et al."Influence of earthworms on apolar lipid features in soils after 1 year of incubation".Biogeochemistry 147.3(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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