TY - JOUR
T1 - Elevated carbon dioxide accelerates the spatial turnover of soil microbial communities
AU - Deng, Ye
AU - He, Zhili
AU - Xiong, Jinbo
AU - Yu, Hao
AU - Xu, Meiying
AU - Hobbie, Sarah E.
AU - Reich, Peter B.
AU - Schadt, Christopher W.
AU - Kent, Angela
AU - Pendall, Elise
AU - Wallenstein, Matthew
AU - Zhou, Jizhong
N1 - Publisher Copyright:
© 2016 John Wiley & Sons Ltd.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Although elevated CO
2 (eCO
2) significantly affects the α-diversity, composition, function, interaction and dynamics of soil microbial communities at the local scale, little is known about eCO
2 impacts on the geographic distribution of micro-organisms regionally or globally. Here, we examined the β-diversity of 110 soil microbial communities across six free air CO
2 enrichment (FACE) experimental sites using a high-throughput functional gene array. The β-diversity of soil microbial communities was significantly (P < 0.05) correlated with geographic distance under both CO
2 conditions, but declined significantly (P < 0.05) faster at eCO
2 with a slope of -0.0250 than at ambient CO
2 (aCO
2) with a slope of -0.0231 although it varied within each individual site, indicating that the spatial turnover rate of soil microbial communities was accelerated under eCO
2 at a larger geographic scale (e.g. regionally). Both distance and soil properties significantly (P < 0.05) contributed to the observed microbial β-diversity. This study provides new hypotheses for further understanding their assembly mechanisms that may be especially important as global CO
2 continues to increase.
AB - Although elevated CO
2 (eCO
2) significantly affects the α-diversity, composition, function, interaction and dynamics of soil microbial communities at the local scale, little is known about eCO
2 impacts on the geographic distribution of micro-organisms regionally or globally. Here, we examined the β-diversity of 110 soil microbial communities across six free air CO
2 enrichment (FACE) experimental sites using a high-throughput functional gene array. The β-diversity of soil microbial communities was significantly (P < 0.05) correlated with geographic distance under both CO
2 conditions, but declined significantly (P < 0.05) faster at eCO
2 with a slope of -0.0250 than at ambient CO
2 (aCO
2) with a slope of -0.0231 although it varied within each individual site, indicating that the spatial turnover rate of soil microbial communities was accelerated under eCO
2 at a larger geographic scale (e.g. regionally). Both distance and soil properties significantly (P < 0.05) contributed to the observed microbial β-diversity. This study provides new hypotheses for further understanding their assembly mechanisms that may be especially important as global CO
2 continues to increase.
KW - carbon dioxide
KW - microbial communities
KW - soil microbiology
UR - http://handle.uws.edu.au:8081/1959.7/uws:33546
M3 - Article
SN - 1354-1013
VL - 22
SP - 957
EP - 964
JO - Global Change Biology
JF - Global Change Biology
IS - 2
ER -