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. 2013 Sep 13;8(9):e74500. doi: 10.1371/journal.pone.0074500

Figure 5. Double dendrogram and heatmap, based on the Ward minimum variance clustering method for abundant genera investigated using nifH gene pyrosequencing.

Figure 5

The heatmap indicates the relative abundance of the (a) most abundant and (b) most rare genera within each sample. B, Buinen; D, Droevendaal; K, Kollumerwaard and G, Grebbedijk; Ap, April; Ju, June; Oc, October.