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Title: Soil characteristics and land-use drive bacterial community assembly patterns

Abstract

ABSTRACT Land-use and soil characteristics drive variation in soil community composition, but the influences of these factors on dispersal and community assembly at regional scale remain poorly characterized. Land-use remains a consistent driver of soil community composition even when exhibiting patchy spatial distribution at regional scale. In addition, disturbed and early successional soils often exhibit stochastic community assembly patterns. These observations suggest local community composition is influenced by dispersal and assembly from regional species pools. We examined bacterial community assembly within agricultural cropland, old-field, and forested sites across 10 landscapes in the region around Ithaca, New York (USA). We found that the Sloan neutral model explained assembly well at regional scale (R2 = 0.763), but that both soil pH and land-use imposed selection that shaped community composition. We show that homogeneous selection was a dominant assembly process with respect to both soil pH and land-use regime, but that these two factors interacted in their effects on bacterial community assembly. We conclude that bacterial community assembly at a regional scale is driven by dispersal from regional species pools and local selection on the basis of soil pH and other soil characteristics that vary with land-use.

Authors:
 [1];  [2];  [1]
  1. School of Integrative Plant Science, Cornell University, 306 Tower Road, Bradfield Hall, Ithaca, NY, USA 14853, Ithaca, NY, USA
  2. School of Integrative Plant Science, Cornell University, 306 Tower Road, Bradfield Hall, Ithaca, NY, USA 14853, Ithaca, NY, USA, Department of Microbiome Science, Max Planck Institute for Developmental Biology, Tübingen, Germany
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1580172
Grant/Contract Number:  
SC0016364; SC0004486
Resource Type:
Published Article
Journal Name:
FEMS Microbiology Ecology
Additional Journal Information:
Journal Name: FEMS Microbiology Ecology Journal Volume: 96 Journal Issue: 1; Journal ID: ISSN 0168-6496
Publisher:
Oxford University Press
Country of Publication:
Netherlands
Language:
English

Citation Formats

Barnett, Samuel E., Youngblut, Nicholas D., and Buckley, Daniel H. Soil characteristics and land-use drive bacterial community assembly patterns. Netherlands: N. p., 2019. Web. doi:10.1093/femsec/fiz194.
Barnett, Samuel E., Youngblut, Nicholas D., & Buckley, Daniel H. Soil characteristics and land-use drive bacterial community assembly patterns. Netherlands. doi:10.1093/femsec/fiz194.
Barnett, Samuel E., Youngblut, Nicholas D., and Buckley, Daniel H. Fri . "Soil characteristics and land-use drive bacterial community assembly patterns". Netherlands. doi:10.1093/femsec/fiz194.
@article{osti_1580172,
title = {Soil characteristics and land-use drive bacterial community assembly patterns},
author = {Barnett, Samuel E. and Youngblut, Nicholas D. and Buckley, Daniel H.},
abstractNote = {ABSTRACT Land-use and soil characteristics drive variation in soil community composition, but the influences of these factors on dispersal and community assembly at regional scale remain poorly characterized. Land-use remains a consistent driver of soil community composition even when exhibiting patchy spatial distribution at regional scale. In addition, disturbed and early successional soils often exhibit stochastic community assembly patterns. These observations suggest local community composition is influenced by dispersal and assembly from regional species pools. We examined bacterial community assembly within agricultural cropland, old-field, and forested sites across 10 landscapes in the region around Ithaca, New York (USA). We found that the Sloan neutral model explained assembly well at regional scale (R2 = 0.763), but that both soil pH and land-use imposed selection that shaped community composition. We show that homogeneous selection was a dominant assembly process with respect to both soil pH and land-use regime, but that these two factors interacted in their effects on bacterial community assembly. We conclude that bacterial community assembly at a regional scale is driven by dispersal from regional species pools and local selection on the basis of soil pH and other soil characteristics that vary with land-use.},
doi = {10.1093/femsec/fiz194},
journal = {FEMS Microbiology Ecology},
number = 1,
volume = 96,
place = {Netherlands},
year = {2019},
month = {12}
}

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