Forested wetlands provide a valuable potential sink for atmospheric carbon, with rates varying between tree communities. Previous studies found that topographic position within the Congaree Swamp (South Carolina, USA) influences flooding regimes, sedimentation processes, and forest community types. We measured aboveground net primary productivity (ANPP) for four distinct tree community types situated within an elevational grad...

Wetlands cover a small portion of the world, but have disproportionate influence on global carbon (C) sequestration, carbon dioxide and methane emissions, and aquatic C fluxes. However, the underlying biogeochemical processes that affect wetland C pools and fluxes are complex and dynamic, making measurements of wetland C challenging. Over decades of research, many observational, experimental, and analytical approaches have bee...