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gcb2709-sup-0002-Table-S1-S2.docWord document46KTable S1. Soil chemistry at the field site. Electrical conductivity is reported as meq100 g−1 and ionic components are listed as µg g−1 soil unless otherwise noted. Table S2. Biomass in biocrust and 5 cm deep soil as measured by extractable DNA over the 2 year experiment. Averages are followed by standard deviation of the mean for each observation. The October 2005 time point measurements were calculated from 15 replicate field samples and the other time point measurements were calculated from 18 replicate field samples. Values followed by the same letter were not significantly different by season using Tukey's HSD mean separation procedure (α < 0.05).

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