干旱区生态环境知识资源中心(Arid): Subsurface microbial communities as a tool for characterizing regional-scale groundwater flow

Arid

DOI	10.1016/j.scitotenv.2022.156768
	Subsurface microbial communities as a tool for characterizing regional-scale groundwater flow
	Merino, Nancy; Jackson, Tracie R.; Campbell, James H.; Kersting, Annie B.; Sackett, Joshua; Fisher, Jenny C.; Bruckner, James C.; Zavarin, Mavrik; Hamilton-Brehm, Scott D.; Moser, Duane P.
通讯作者	Moser, DP
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	842
英文摘要	Subsurface microbial community distribution patterns are influenced by biogeochemical and groundwater fluxes and may inform hydraulic connections along groundwater -flow paths. This study examined the regional-scale microbial community of the Death Valley Regional Flow System and evaluated whether subsurface communities can be used to identify groundwater -flow paths between recharge and discharge areas. Samples were collected from 36 sites in three groundwater basins: Pahute Mesa-Oasis Valley (PMOV), Ash Meadows (AM), and Alkali Flat-Furnace Creek Ranch (AFFCR). Microbial diversity within and between communities varied by location, and communities were separated into two overall groups that affiliated with the AM and PMOV/AFFCR basins. Network analysis revealed patterns between clusters of common microbes that represented groundwaters with similar geochemical conditions and largely corroborated hydraulic connections between recharge and discharge areas. Null model analyses identified deterministic and stochastic ecological processes contributing to microbial community assemblages. Most communities were more different than expected and governed by dispersal limitation, geochemical differences, or undominating processes. However, certain communities from sites located within or near the Nevada National Security Site were more similar than expected and dominated by homogeneous dispersal or selection. Overall, the (dis) similarities between the microbial communities of DVRFS recharge and discharge areas supported previously documented hydraulic connections between: (1) Spring Mountains and Ash Meadows; (2) Frenchman and Yucca Flat and Amargosa Desert; and (3) Amargosa Desert and Death Valley. However, only a portion of the flow path between Pahute Mesa and Oasis Valley could be supported by microbial community analyses, likely due to well-associated artifacts in samples from the two Oasis Valley sites. This study demonstrates the utility of combining microbial data with hydrologic, geologic, and water-chemistry information to comprehensively characterize groundwater systems, highlighting both strengths and limitations of this approach.
英文关键词	Fractured-rock aquifer Subsurface microbial ecology Microbial community assembly Regional-scale aquifer microbial community Deep biosphere
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000827318000002
WOS关键词	ASSEMBLY PROCESSES ; CARBONATE AQUIFER ; INTERBASIN FLOW ; DEATH-VALLEY ; GREAT-BASIN ; DIVERSITY ; TRANSPORT ; GEOCHEMISTRY ; MECHANISMS ; MOUNTAINS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394392
推荐引用方式 GB/T 7714	Merino, Nancy,Jackson, Tracie R.,Campbell, James H.,et al. Subsurface microbial communities as a tool for characterizing regional-scale groundwater flow[J],2022,842.
APA	Merino, Nancy.,Jackson, Tracie R..,Campbell, James H..,Kersting, Annie B..,Sackett, Joshua.,...&Moser, Duane P..(2022).Subsurface microbial communities as a tool for characterizing regional-scale groundwater flow.SCIENCE OF THE TOTAL ENVIRONMENT,842.
MLA	Merino, Nancy,et al."Subsurface microbial communities as a tool for characterizing regional-scale groundwater flow".SCIENCE OF THE TOTAL ENVIRONMENT 842(2022).