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. 2020 Apr 10;10:6198. doi: 10.1038/s41598-020-63173-7

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© The Author(s) 2020

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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Constrained ordination plots using CCA models of OTU groupings. Important environmental variables selected using forward and backwards selection. (Supplementary Table 6). Each model that significantly explained the species dispersion across the OTU groupings are denoted with an *. Lengths of each vector indicate the correlation between the variable and the ordination. Percentages next to CCA1/CCA2 represent the amount of inertia explained by the axes, while total constrained var represents the amount of inertia accounted for by the vectors (environmental variables).