气候变化领域集成服务门户(CCPortal): Disentangling mechanisms that mediate the balance between stochastic and deterministic processes in microbial succession

CCPortal

DOI	10.1073/pnas.1414261112
	Disentangling mechanisms that mediate the balance between stochastic and deterministic processes in microbial succession
	Dini-Andreote F.; Stegen J.C.; Van Elsas J.D.; Salles J.F.
发表日期	2015
ISSN	0027-8424
起始页码	E1326
结束页码	E1332
卷号	112 期号:11
英文摘要	Ecological succession and the balance between stochastic and deterministic processes are two major themes within microbial ecology, but these conceptual domains have mostly developed independent of each other. Here we provide a framework that integrates shifts in community assembly processes with microbial primary succession to better understand mechanisms governing the stochastic/deterministic balance. Synthesizing previous work, we devised a conceptual model that links ecosystem development to alternative hypotheses related to shifts in ecological assembly processes. Conceptual model hypotheses were tested by coupling spatiotemporal data on soil bacterial communities with environmental conditions in a salt marsh chronosequence spanning 105 years of succession. Analyses within successional stages showed community composition to be initially governed by stochasticity, but as succession proceeded, there was a progressive increase in deterministic selection correlated with increasing sodium concentration. Analyses of community turnover among successional stages - which provide a larger spatiotemporal scale relative to within stage analyses - revealed that changes in the concentration of soil organic matter were the main predictor of the type and relative influence of determinism. Taken together, these results suggest scale-dependency in the mechanisms underlying selection. To better understand mechanisms governing these patterns, we developed an ecological simulation model that revealed how changes in selective environments cause shifts in the stochastic/ deterministic balance. Finally, we propose an extended - and experimentally testable - conceptual model integrating ecological assembly processes with primary and secondary succession. This framework provides a priori hypotheses for future experiments, thereby facilitating a systematic approach to understand assembly and succession in microbial communities across ecosystems.
英文关键词	Community assembly; Evolutionary niche conservatism; Neutral theory; Niche theory; Simulation model
语种	英语
scopus关键词	soil organic matter; Article; chronosequence; community succession; conceptual framework; deterministic model; ecosystem; environmental aspects and related phenomena; environmental change; mathematical model; microbial colonization; microbial community; priority journal; quantitative analysis; secondary succession (community); simulation; spatiotemporal analysis; stochastic model; biological model; computer simulation; ecosystem; Markov chain; microbiology; Bacteria (microorganisms); Computer Simulation; Ecosystem; Models, Biological; Soil Microbiology; Stochastic Processes
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159096
作者单位	Dini-Andreote, F., Department of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, 9747 AG, Netherlands, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, United States; Stegen, J.C., Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, United States; Van Elsas, J.D., Department of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, 9747 AG, Netherlands; Salles, J.F., Department of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, 9747 AG, Netherlands
推荐引用方式 GB/T 7714	Dini-Andreote F.,Stegen J.C.,Van Elsas J.D.,et al. Disentangling mechanisms that mediate the balance between stochastic and deterministic processes in microbial succession[J],2015,112(11).
APA	Dini-Andreote F.,Stegen J.C.,Van Elsas J.D.,&Salles J.F..(2015).Disentangling mechanisms that mediate the balance between stochastic and deterministic processes in microbial succession.Proceedings of the National Academy of Sciences of the United States of America,112(11).
MLA	Dini-Andreote F.,et al."Disentangling mechanisms that mediate the balance between stochastic and deterministic processes in microbial succession".Proceedings of the National Academy of Sciences of the United States of America 112.11(2015).