Soil microbial community composition (16S) data from a laboratory redox fluctuation experiment conducted with an Oxisol and Mollisol

To test the response of microbial communities to periodic oxygen
limitation, we conducted a laboratory experiment where two
contrasting soils (a rainforest Oxisol from Puerto Rico, and an Iowa
cropland Mollisol) were incubated under headspace treatments where
oxygen availability varied cyclically over time. Treatments
consisted of 0, 2, 4, 8, or 12 d of anoxic conditions (dinitrogen
headspace) followed by 4 d of oxic conditions (i.e., ambient oxygen
concentrations), and these treatments were repeated for a total of
384 d. At 0, 48, and 384 days, DNA was extracted from replicates
from each treatment for sequencing of 16S rRNA amplicons. Companion
biogeochemical measurements from this experiment were published
previously by Huang et al. (2021a,b). These data support the Hall et
al. (2022) manuscript published in Frontiers in Microbiology.