Articles | Volume 18, issue 5
Biogeosciences, 18, 1823–1838, 2021
Biogeosciences, 18, 1823–1838, 2021

Research article 16 Mar 2021

Research article | 16 Mar 2021

Warming and ocean acidification may decrease estuarine dissolved organic carbon export to the ocean

Michelle N. Simone et al.

Data sets

Oxygen and carbon fluxes from shallow unvegetated sediments in the Clarence Estuary, NSW, Australia under warming and ocean acidification conditions M. Simone, K. Schulz, J. Oakes, and B. Eyre

Short summary
Estuaries are responsible for a large contribution of dissolved organic carbon (DOC) to the global C cycle, but it is unknown how this will change in the future. DOC fluxes from unvegetated sediments were investigated ex situ subject to conditions of warming and ocean acidification. The future climate shifted sediment fluxes from a slight DOC source to a significant sink, with global coastal DOC export decreasing by 80 %. This has global implications for C cycling and long-term C storage.
Final-revised paper