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. 2019 May 14;9:7366. doi: 10.1038/s41598-019-43814-2

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© The Author(s) 2019

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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Time series of Nearest Taxon Index (NTI)³², calculated for each local community compared with null model simulations. Samples outside the central area delimited by the dashed lines show significant community structure (above or below the 95% confidence intervals of the null-model simulation; grey dashed lines). Positive values signal phylogenetic clustering whereas negative values signal phylogenetic overdispersion.