PCA ordination of the species, showing the species with the highest meaningful correlation with the first two axes.

<p>The space has been identified in four quadrants (I—IV) to facilitate the interpretation of species vs. sites position. The name of the species has been coded by merging the first four letters of the genus with the first four letters of the species name (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0194551#pone.0194551.s001" target="_blank">S1 Table</a> for species names).