Anthropogenic activities have disrupted biogeochemical cycles with subsequent increases in the emission of radiatively important trace gases. Wetlands are natural sources of CO2, CH4 and N2O with seasonal variations in anthropogenic inputs, temperature, salinity, and water modulating emissions. Variations in trace gas flux in mangrove ecosystems using eddy covariance, soil coring, leaf litter sampling, and static chambers, will reveal correlations between seasonal variations in fluxes and environmental variables. This information will show the response of mangrove ecosystems to growing anthropogenic pressures, such as elevated CO2 and nutrient inputs, and their seasonal contribution to the emission of trace gases.