Nature – Fakhraee et al. (2023): Ocean alkalinity enhancement through restoration of blue carbon ecosystems

Mojtaba Fakhraee, Noah J. Planavsky, Christopher T. Reinhard IN: Nat Sustain (2023). https://doi.org/10.1038/s41893-023-01128-2

Here the authors use biogeochemical simulations to show that restoration of marine ecosystems can also lead to permanent carbon dioxide removal by driving ocean alkalinity enhancement and atmosphere-to-ocean CO₂ fluxes. Most notably, their findings suggest that restoring mangroves, which are common in tropical shallow marine settings, will lead to notable local ocean alkalinity enhancement across a wide range of scenarios. Enhanced alkalinity production is linked to increased rates of anaerobic respiration and to increased dissolution of calcium carbonate within sediments.

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