Articles | Volume 19, issue 22
https://doi.org/10.5194/bg-19-5269-2022
https://doi.org/10.5194/bg-19-5269-2022
Research article
 | 
22 Nov 2022
Research article |  | 22 Nov 2022

Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water

Daniel François, Adina Paytan, Olga Maria Oliveira de Araújo, Ricardo Tadeu Lopes, and Cátia Fernandes Barbosa

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Cited articles

Abu-Zied, R. H., Al-Dubai, T. A., and Bantan, R. A.: Environmental conditions of shallow waters alongside the southern Corniche of Jeddah based on benthic foraminifera, physico-chemical parameters and heavy metals, J. Foramin. Res., 46, 149–170, https://doi.org/10.2113/gsjfr.46.2.149, 2016. 
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Back, W., Hanshaw, B. B., Pyle, T. E., Plummer, L. N., and Weidie, A. E.: Geochemical significance of groundwater discharge and carbonate solution to the formation of Caleta Xel Ha, Quintana Roo, Mexico, Water Resour. Res., 19, 1521–1535, https://doi.org/10.1029/WR015I006P01521, 1979. 
Barbosa, C. F., Prazeres, M., Padovani, B., and Seoane, J. C. S.: Foraminiferal assemblage and reef check census in coral reef health monitoring of East Brazilian margin, Mar. Micropaleontol., 73, 62–69, https://doi.org/10.1016/j.marmicro.2009.07.002, 2009. 
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Short summary
Our analysis revealed that under the two most conservative acidification projections foraminifera assemblages did not display considerable changes. However, a significant decrease in species richness was observed when pH decreases to 7.7 pH units, indicating adverse effects under high-acidification scenarios. A micro-CT analysis revealed that calcified tests of Archaias angulatus were of lower density in low pH, suggesting no acclimation capacity for this species.
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