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. 2017 Sep 7;8:1550. doi: 10.3389/fpls.2017.01550

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Copyright © 2017 Cerri, Sapkota, Coppi, Ferri, Foggi, Gigante, Lastrucci, Selvaggi, Venanzoni, Nicolaisen, Ferranti and Reale.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Species accumulation curve for the 96 samples, obtained with the function specaccum of the ‘vegan’ R package; it shows the relationship between observed OTUs and number of samples.