Microbial subnetworks related to short-term diel O₂fluxes within geochemically distinct freshwater wetlands

Abstract

4O 2 concentrations often fluctuate over diel timescales within wetlands, driven by 2 5 temperature, sunlight, photosynthesis, and respiration. These daily fluxes have been shown to 2 6 impact biogeochemical transformations (e.g. denitrification), which are mediated by the residing 2 7 microbial community. However, little is known about how resident microbial communities 2 8 respond to diel dramatic physical and chemical fluxes in freshwater wetland ecosystems. In this 2 9 study, total microbial (bacterial and archaeal) community structure was significantly related to 3 0 diel time points in just one out of four distinct freshwater wetlands sampled. This suggests that 3 1