Ecosystem management in forests, croplands, grassland, mires, rangelands amongst others is a major driver of net greenhouse gas (GHG) exchange between an ecosystem and the atmosphere. Within this session we aim at better understanding on how management activities in terrestrial ecosystems modify the exchange of the three major GHGs: carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). We are particularly interested in in-situ measurements (both short and long-term) of either a single GHG, or studies that jointly assess all three GHGs from managed ecosystems. Direct comparison studies of different managements or managed vs. unmanaged systems are encouraged. We further invite contributions that aim at combining GHG measurements with modeling approaches, and/or those that try to disentangle how management practices modify the processes responsible for GHG production/consumption at the plant, soil or ecosystem level. As an output if this session we anticipate, (1) learning about individual approaches currently being used to better understand the effects of management activities on GHG budgets, and (2) to compile information and develop standardized guidelines for existing and future studies allowing for direct comparison across systems.