微生物种群生物学
生态学
地下水
环境压力
环境科学
压力(语言学)
生物
环境保护
地质学
哲学
遗传学
岩土工程
语言学
细菌
作者
Daliang Ning,Yajiao Wang,Yuhang Fan,Jianjun Wang,Joy D. Van Nostrand,Liyou Wu,Ping Zhang,Daniel Curtis,Renmao Tian,Lauren M. Lui,Terry C. Hazen,Eric J. Alm,Matthew W. Fields,Farris L. Poole,Michael W. W. Adams,Romy Chakraborty,David A. Stahl,Paul D. Adams,Adam P. Arkin,Zhili He,Jizhong Zhou
出处
期刊:Nature microbiology
日期:2024-01-11
卷期号:9 (2): 490-501
被引量:1
标识
DOI:10.1038/s41564-023-01573-x
摘要
Community assembly describes how different ecological processes shape microbial community composition and structure. How environmental factors impact community assembly remains elusive. Here we sampled microbial communities and >200 biogeochemical variables in groundwater at the Oak Ridge Field Research Center, a former nuclear waste disposal site, and developed a theoretical framework to conceptualize the relationships between community assembly processes and environmental stresses. We found that stochastic assembly processes were critical (>60% on average) in shaping community structure, but their relative importance decreased as stress increased. Dispersal limitation and 'drift' related to random birth and death had negative correlations with stresses, whereas the selection processes leading to dissimilar communities increased with stresses, primarily related to pH, cobalt and molybdenum. Assembly mechanisms also varied greatly among different phylogenetic groups. Our findings highlight the importance of microbial dispersal limitation and environmental heterogeneity in ecosystem restoration and management. A field investigation at a former nuclear waste disposal site shows how environmental stress modulates subsurface microbial community assembly.
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