Articles | Volume 19, issue 22
https://doi.org/10.5194/bg-19-5269-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-5269-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Nov 2022
Research article |
| 22 Nov 2022
| 22 Nov 2022
Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water
Departamento de Geoquímica, Universidade Federal Fluminense, Niterói, Brazil
now at: Department of Ocean Systems, NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, Texel, the Netherlands
Adina Paytan
Institute of Marine Sciences, University of California, Santa Cruz, USA
Olga Maria Oliveira de Araújo
Nuclear Instrumentation Laboratory, Nuclear Engineering Program/COPPE, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
Ricardo Tadeu Lopes
Nuclear Instrumentation Laboratory, Nuclear Engineering Program/COPPE, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
Cátia Fernandes Barbosa
Departamento de Geoquímica, Universidade Federal Fluminense, Niterói, Brazil
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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.
Our analysis revealed that under the two most conservative acidification projections...
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