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. 2018 Apr 10;8:5758. doi: 10.1038/s41598-018-24253-x

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Correlation network analysis of the interactions among plant species alone and with bacterial OTUs, with node sizes in (A) indicating the number of sites where the plant species or bacterial OTU occurs, and (B) the degree of connectivity (the number of edges). Plant species nodes in green, bacterial OTUs nodes in purple. Edges represent the FDR-corrected positive (red) or negative (blue) Spearman’s correlations between plant species and bacterial OTUs, or among plant species. Only interactions with Spearman correlations of ≥0.6 or ≤−0.6 are indicated. Striking recognizable clusters are named according to abundant plant names, or vegetation alliances. Ao, Anthoxanthum odoratum aggr., Fr, Festuca rubra aggr., Ac, Agrostis capillaris, and Ns, Nardus stricta. Lines point to the most important alliances and clusters mentioned in the main text.