Environmental changes affect the assembly of soil bacterial community primarily by mediating stochastic processes

Global Change Biology
Ximei ZhangXingguo Han

Abstract

Both 'species fitness difference'-based deterministic processes, such as competitive exclusion and environmental filtering, and 'species fitness difference'-independent stochastic processes, such as birth/death and dispersal/colonization, can influence the assembly of soil microbial communities. However, how both types of processes are mediated by anthropogenic environmental changes has rarely been explored. Here we report a novel and general pattern that almost all anthropogenic environmental changes that took place in a grassland ecosystem affected soil bacterial community assembly primarily through promoting or restraining stochastic processes. We performed four experiments mimicking 16 types of environmental changes and separated the compositional variation of soil bacterial communities caused by each environmental change into deterministic and stochastic components, with a recently developed method. Briefly, because the difference between control and treatment communities is primarily caused by deterministic processes, the deterministic change was quantified as (mean compositional variation between treatment and control) - (mean compositional variation within control). The difference among replicate treatment communities i...Continue Reading

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Citations

May 21, 2016·Frontiers in Microbiology·Eric R JohnstonKonstantinos T Konstantinidis
Oct 28, 2016·F1000Research·Cynthia Chang, Janneke HilleRisLambers
Jan 9, 2019·Environmental Microbiology Reports·Silke Langenheder, Eva S Lindström
Nov 19, 2019·Environmental Microbiology·Pandeng WangLin Jiang
Oct 13, 2017·Microbiology and Molecular Biology Reviews : MMBR·Jizhong Zhou, Daliang Ning
May 15, 2020·Annals of the New York Academy of Sciences·Jonathan M ChaseDuarte S Viana
Dec 8, 2017·Environmental Microbiology·Shengen LiuQingkui Wang
Mar 24, 2021·Science China. Life Sciences·Junjie YangXimei Zhang

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