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DOI | 10.1002/2017GL073651 |
Biofilm-induced bioclogging produces sharp interfaces in hyporheic flow, redox conditions, andmicrobial community structure | |
Caruso, Alice1; Boano, Fulvio1; Ridolfi, Luca1; Chopp, David L.2; Packman, Aaron3 | |
2017-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; USA |
英文摘要 | Riverbed sediments host important biogeochemical processes that play a key role in nutrient dynamics. Sedimentary nutrient transformations are mediated by bacteria in the form of attached biofilms. The influence of microbial metabolic activity on the hydrochemical conditions within the hyporheic zone is poorly understood. We present a hydrobiogeochemical model to assess how the growth of heterotrophic and autotrophic biomass affects the transport and transformation of dissolved nitrogen compounds in bed form-induced hyporheic zones. Coupling between hyporheic exchange, nitrogen metabolism, and biomass growth leads to an equilibrium between permeability reduction and microbial metabolism that yields shallow hyporheic flows in a region with low permeability and high rates of microbial metabolism near the stream-sediment interface. The results show that the bioclogging caused by microbial growth can constrain rates and patterns of hyporheic fluxes and microbial transformation rate in many streams. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131900065 |
WOS关键词 | POROUS-MEDIA ; MICROBIAL-GROWTH ; SOLUTE TRANSPORT ; SURFACE-WATER ; STEADY-STATE ; STREAM ; MODEL ; METABOLISM ; ZONE ; PERMEABILITY |
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/27882 |
专题 | 气候变化 |
作者单位 | 1.Politecn Torino, Dept Environm Land & Infrastruct Engn, Turin, Italy; 2.Northwestern Univ, Dept Appl Math, Evanston, IL USA; 3.Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL USA |
推荐引用方式 GB/T 7714 | Caruso, Alice,Boano, Fulvio,Ridolfi, Luca,et al. Biofilm-induced bioclogging produces sharp interfaces in hyporheic flow, redox conditions, andmicrobial community structure[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(10). |
APA | Caruso, Alice,Boano, Fulvio,Ridolfi, Luca,Chopp, David L.,&Packman, Aaron.(2017).Biofilm-induced bioclogging produces sharp interfaces in hyporheic flow, redox conditions, andmicrobial community structure.GEOPHYSICAL RESEARCH LETTERS,44(10). |
MLA | Caruso, Alice,et al."Biofilm-induced bioclogging produces sharp interfaces in hyporheic flow, redox conditions, andmicrobial community structure".GEOPHYSICAL RESEARCH LETTERS 44.10(2017). |
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