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| Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore | |
Feng, Xiaojuan ; Feakins, Sarah J.; Liu, Zongguang; Ponton, Camilo; Wang, Renee Z.; Karkabi, Elias; Galy, Valier2; Berelson, William M.; Nottingham, Andrew T.; Meir, Patrick3,5; West, A. Joshua
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| 2016 | |
| Source Publication | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
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| ISSN | 2169-8953 |
| Volume | 121Issue:5Pages:1316-1338 |
| Abstract | While lignin geochemistry has been extensively investigated in the Amazon River, little is known about lignin distribution and dynamics within deep, stratified river channels or its transformations within soils prior to delivery to rivers. We characterized lignin phenols in soils, river particulate organic matter (POM), and dissolved organic matter (DOM) across a 4 km elevation gradient in the Madre de Dios River system, Peru, as well as in marine sediments to investigate the source-to-sink evolution of lignin. In soils, we found more oxidized lignin in organic horizons relative to mineral horizons. The oxidized lignin signature was maintained during transfer into rivers, and lignin was a relatively constant fraction of bulk organic carbon in soils and riverine POM. Lignin in DOM became increasingly oxidized downstream, indicating active transformation of dissolved lignin during transport, especially in the dry season. In contrast, POM accumulated undegraded lignin downstream during the wet season, suggesting that terrestrial input exceeded in-river degradation. We discovered high concentrations of relatively undegraded lignin in POM at depth in the lower Madre de Dios River in both seasons, revealing a woody undercurrent for its transfer within these deep rivers. Our study of lignin evolution in the soil-river-ocean continuum highlights important seasonal and depth variations of river carbon components and their connection to soil carbon pools, providing new insights into fluvial carbon dynamics associated with the transfer of lignin biomarkers from source to sink. |
| Keyword | lignin phenols dissolved organic matter (DOM) particulate organic matter (POM) Andes Amazon depth profile |
| Subject Area | Environmental Sciences ; Geosciences, Multidisciplinary |
| DOI | 10.1002/2016JG003323 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | TERRESTRIAL ORGANIC-MATTER ; CONTINENTAL-SHELF SEDIMENTS ; CUO REACTION-PRODUCTS ; LEAF WAX BIOMARKERS ; FAGUS-SYLVATICA L. ; ELEVATION GRADIENT ; PERUVIAN ANDES ; TEMPERATURE SENSITIVITY ; CHEMICAL-COMPOSITION ; OXIDATION-PRODUCTS |
| WOS Research Area | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS ID | WOS:000378703200008 |
| Publisher | AMER GEOPHYSICAL UNION |
| Subtype | Article |
| Publication Place | WASHINGTON |
| EISSN | 2169-8961 |
| Funding Organization | U.S. National Science FoundationNational Science Foundation (NSF) [1227192] ; National Program on Key Basic Research ProjectNational Basic Research Program of China [2015CB954201] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41422304] ; USC ; Natural Environment Research CouncilUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/F002149/1] ; ARCAustralian Research Council [FT110100457] ; European Union Marie Curie FellowshipEuropean Commission [FP7-2012-329360] ; NSFNational Science Foundation (NSF) [OCE-0934073] ; NERCUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/F002149/1, NE/H006753/1, NE/G018278/1, NE/J023531/1] Funding Source: UKRI ; Natural Environment Research CouncilUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/H006753/1, NE/J023531/1, NE/G018278/1] Funding Source: researchfish |
| Corresponding Author Email | xfeng@ibcas.ac.cn ; feakins@usc.edu |
| OA | Green Accepted, Green Published, Bronze |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ibcas.ac.cn/handle/2S10CLM1/25118 |
| Collection | 植被与环境变化国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA 3.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA 4.Univ Edinburgh, Sch Geosci, Edinburgh, Midlothian, Scotland 5.Nottingham, Andrew T.] Smithsonian Trop Res Inst, Balboa, Panama 6.Australian Natl Univ, Res Sch Biol, Canberra, ACT, Australia |
| Recommended Citation GB/T 7714 | Feng, Xiaojuan,Feakins, Sarah J.,Liu, Zongguang,et al. Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2016,121(5):1316-1338. |
| APA | Feng, Xiaojuan.,Feakins, Sarah J..,Liu, Zongguang.,Ponton, Camilo.,Wang, Renee Z..,...&West, A. Joshua.(2016).Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,121(5),1316-1338. |
| MLA | Feng, Xiaojuan,et al."Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 121.5(2016):1316-1338. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2016jg003323.pdf（2169KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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