Natural wetlands contribute 20-39% of global methane emissions. While methane oxidation is one of the biggest controls on wetland methane emissions, the factors that contribute to the variability and seasonality of methane oxidation are largely unknown. The goal of this field study was to elucidate the controlling factors on methane oxidation in Alaskan boreal bog and fen wetlands at the Bonanza Creek Long Term Ecological Research Station. Methane oxidation is microbially-mediated dominantly by aerobic methanotrophic bacteria. Two-dimensional oxygen sensors (planar optodes) were used to determine the amount of oxygen that diffuses through plants and into the rhizosphere throughout the 2014 growing season by monitoring the ambient concentration of oxygen, as well as injecting oxygenated water adjacent to the optodes to observe rates of oxygen consumption. Methane and CO₂ fluxes were monitored from the area adjacent to each optode using flux chambers, and methane oxidation was determined using methyl fluoride inhibition. The plant community composition and associated plant parameters measured throughout the growing season include stomatal conductivity, primary productivity, rates of photosynthesis, root biomass, root length, root porosity, and iron plaque quantities. Soil solution chemistry was also monitored for methane and CO₂ concentrations, methane and CO₂ isotopes, dissolved organic carbon, ferrous Fe, redox potential, dissolved oxygen, and pH. The study is ongoing, but we expect to gain a better understanding of the plant parameters that have the largest impact on rates of methane oxidation. This will in turn improve rhizosphere, plant, and ecosystem-scale modeling of methane dynamics.