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. 2014 Sep 4;9(9):e106662. doi: 10.1371/journal.pone.0106662

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© 2014 Canfora et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The heatmap reports the normalized values of the taxonomic assignments at phylum level. Each value has been normalized following this criterion: Where X_ij is the occurrence of the phyla ‘j’ in the site ‘i’ and N is the number of site in the dataset (in this case 9). Using this transformation each phyla assignment can be compared in all sites independently from its order of magnitude.

Inline graphic — The heatmap reports the normalized values of the taxonomic assignments at phylum level. Each value has been normalized following this criterion: Where X_ij is the occurrence of the phyla ‘j’ in the site ‘i’ and N is the number of site in the dataset (in this case 9). Using this transformation each phyla assignment can be compared in all sites independently from its order of magnitude.