Wetlands are unique in their ability to store vast amounts of carbon-rich organic matter, making them critical environments in constructing global greenhouse gas budgets. While wetlands are often a sink of carbon dioxide, the waterlogged, anoxic condition of their soils facilitates microbial conversion of stored carbon into methane, a potent greenhouse gas with 28 times the warming potential of carbon dioxide. Globally, wetlands contribute roughly one-third of total natural and anthropogenic methane emissions. Anthropogenic disturbances, including more extreme and varied precipitation caused by climate change, disproportionately impact gas cycling in wetlands due to microbial feedback loops and exposure of previously stored carbon. Wetland methane dynamics are poorly understood, inhibiting our ability to model climate change and accurately achieve global emissions cutting goals. My project quantifies methane gas dynamics in aquatic-terrestrial interfaces at Harvard Forest and works to understand the biotic and abiotic factors that influence methane emissions in wetlands and uplands. We measured the amount of methane and carbon dioxide being absorbed or emitted (net flux) from soils over 10 weeks in wetland and upland conditions, including the first measurement of methane flux in the Beaver and Black Gum Swamps at Harvard Forest. We expected wetland soils to emit more methane than upland soils due to anoxic soil conditions, however, factors like tree species identity and soil moisture fluctuations might also influence rates of methane flux. By examining factors like the species of adjacent trees, soil moisture, precipitation, and stream gas concentrations, we will be better able to account for methane emissions in temperate forests, as well as understand the role of methane in net forest flux. Quantifying methane and carbon dioxide dynamics will help determine how wetlands should be managed, how restoration practices impact gas fluxes, and how methane emissions will need to be offset to achieve global emissions goals.