Absolute abundance expressed in percentage of the total sequences in each sample of species exceeding an average mean of more than 0.5%.

<p>Significant variations between samples were observed. See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0056418#pone.0056418.s002" target="_blank">Table S2</a> for a complete list of phyla, genera and species identified in the study.