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. 2018 Jan 16;6:14. doi: 10.1186/s40168-017-0389-9

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Effects of cropping practices on soil and root bacteria and fungi. Separate CAP ordinations using Bray-Curtis distance were performed for bacteria and fungi, both in roots and soil. CAP analyses were constrained by the factor “cropping systems”, and the explained fraction of the total variance is indicated above the plots (with 95% confidence interval, significance assessed with 10⁴ permutations). Percentage of variation given on each axis refers to the explained fraction of total variation