Tagliabue et al. (2023): Ocean iron fertilization may amplify climate change pressures on marine animal biomass for limited climate benefit

Alessandro Tagliabue, Benjamin S. Twining, Nicolas Barrier, Olivier Maury, Manon Berger, Laurent Bopp IN: Global Change Biology, https://doi.org/10.1111/gcb.16854

Previous OIF (ocean iron fertilization) modelling has found that while carbon export increases, nutrient transport to lower latitude ecosystems declines, resulting in a modest impact on atmospheric CO₂. Here, the authors combine global ocean biogeochemistry and ecosystem models to show that, while stimulating carbon sequestration, OIF (may amplify climate-induced declines in tropical ocean productivity and ecosystem biomass under a high-emission scenario, with very limited potential atmospheric CO₂ drawdown.

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