Files in this Data Supplement:
Supplemental text; oligonucleotide primers used in this study (Table S1); relative abundance of major archaeal phyla and classes in river and sediment column samples (Table S2); sampling map of the Taif River in Saudi Arabia, and Sketch map of sampling locations of shallow infiltration zone, intermediate infiltration zone, and unsaturated riverbed samples (Fig. S1); rarefaction curves of bacterial and archaeal 16S rRNA pyrosequencing reads for representative samples fully spanning the range found this study (Fig. S2); distribution of microbial phyla in representative sediment samples derived from shallow and intermediate infiltration zones of Taif River cross sections 1 and 4, as well as the South Platte River, collected in different seasons (Fig. S3).
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