Table 1.

Average Faith’s (Faith and Baker, 2006) phylogenetic diversity (PD) calculated for groundwater and grouped mineral deployment 16S rRNA gene amplicon libraries.

Sample/group	Average phylogenetic diversity (PD)
Post-deployment GW 3–24	84.1
Post-deployment GW 3–27	76.2
Pre-deployment GW 3–24	72.4
Above RTZ 3–27	60.3 ± 3.40
Above RTZ 3–24	54.7 ± 4.10
Within RTZ 3–27	40.5 ± 2.94
Within RTZ 3–24	37.2 ± 4.30
Below RTZ 3–24	32.6
Below RTZ 3–27	29.6 ± 1.84
Pre-deployment GW 3–27	23.4

The values presented in the table correspond PD values calculated for the maximum number (n = 2000) of sequences included in the rarefaction analysis shown in Figure 2. Table is sorted in order of decreasing PD value. Error terms account for the variation among samples within a group; no error was calculated for groups containing only one sample.