“…However, climate change and anthropogenic disturbances dramatically alter salt-marsh biomorphodynamic equilibrium, jeopardizing their survival (4,6,21,22), affecting carbon sequestration (23), and even shifting marshes from net sinks to sources of carbon (4,18). Global warming, increased carbon dioxide concentration, and sea-level rise have the potential to alter biomass production, organic soil decomposition and surface accretion (19,21,24,25). Human activities directly and indirectly interfere with marsh dynamics through land use changes and alterations of nutrient inputs, sediment dynamics and subsidence rates (21,26).…”