FIG. 3.

Consensus dendrogram representing how many of the six REs grouped microcosm samples by Sorensen-Dice pairwise similarity coefficients, as indicated by the number at the nodes defining clusters. Nodes without a number were recovered only once. The microcosm samples are indicated by their labels at the branch termini: G, GES soil; Q, QRS soil; o, original soil; a, air-treated microcosm soil; h, H₂-treated microcosm soil. The first number indicates the experiment number, and the number after the decimal point indicates the sample number (out of three), if replicate cores were taken from the microcosm.