Pérez-Almeida, N., González, A. G., Santana-Casiano, J. M., & González-Dávila, M. (2022). Ocean Acidification Effect on the Iron-Gallic Acid Redox Interaction in Seawater. Frontiers in Marine Science, 9. https://doi.org/10.3389/fmars.2022.837363
Ocean acidification impacts the iron (Fe) biogeochemistry both its oxidation state and complexation reactions with other substances and thus affect its bioavailability to marine organisms. This has a direct effect on the ecosystems since Fe is an essential micronutrient. Some substances such as gallic acid produced by marine microorganisms can also alter the oxidation state of Fe in seawater. The authors of this study found that gallic acid impacts iron’s redox state for longer periods and thus favours its bioavailability.