Volume 8, Issue 4

Quantifying the roles of immigration and chance in shaping prokaryote community structure

William T. Sloan

Corresponding Author

Department of Civil Engineering, University of Glasgow, Oakfield Avenue, Glasgow G12 8LT, UK.

*E‐mail Sloan@civil.gla.ac.uk; Tel. +44 (0)141 330 4076; Fax +44 (0)141 330 4557.Search for more papers by this author
Mary Lunn

Department of Statistics, University of Oxford, 1 South Parks Road, Oxford OX1 3TG, UK.

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Stephen Woodcock

Department of Civil Engineering, University of Glasgow, Oakfield Avenue, Glasgow G12 8LT, UK.

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Ian M. Head

School of Civil Engineering and Geosciences, University of Newcastle upon Tyne, Newcastle NE1 7RU, UK.

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Sean Nee

Division of Biological Sciences, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT, UK.

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Thomas P. Curtis

School of Civil Engineering and Geosciences, University of Newcastle upon Tyne, Newcastle NE1 7RU, UK.

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First published: 08 March 2006
Citations: 294

Summary

Naturally occurring populations of bacteria and archaea are vital to life on the earth and are of enormous practical significance in medicine, engineering and agriculture. However, the rules governing the formation of such communities are still poorly understood, and there is a need for a usable mathematical description of this process. Typically, microbial community structure is thought to be shaped mainly by deterministic factors such as competition and niche differentiation. Here we show, for a wide range of prokaryotic communities, that the relative abundance and frequency with which different taxa are observed in samples can be explained by a neutral community model (NCM). The NCM, which is a stochastic, birth–death immigration process, does not explicitly represent the deterministic factors and therefore cannot be a complete or literal description of community assembly. However, its success suggests that chance and immigration are important forces in shaping the patterns seen in prokaryotic communities.

Number of times cited according to CrossRef: 294

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