Articles | Volume 23, issue 16
https://doi.org/10.5194/bg-23-5685-2026
https://doi.org/10.5194/bg-23-5685-2026
Research article
 | 
18 Aug 2026
Research article |  | 18 Aug 2026

Biogeochemical dichotomy and intra-order variability in Miliolid and Rotaliid foraminifera

Lin Hoober, Barak Herut, Nadya Teutsch, Sarit Ashckenazi-Polivoda, Adi Torfstein, and Sigal Abramovich

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Cited articles

Anderson, O. R. and Faber, W. W.: An estimation of calcium carbonate deposition rate in a planktonic foraminifer Globigerinoides sacculifer using 45Ca as a tracer; a recommended procedure for improved accuracy, J. Foraminifer. Res., 14, 303–308, https://doi.org/10.2113/gsjfr.14.4.303, 1984. 
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Benaltabet, T., Gutner-Hoch, E., and Torfstein, A.: Heavy Metal, Rare Earth Element and Pb Isotope Dynamics in Mussels During a Depuration Experiment in the Gulf of Aqaba, Northern Red Sea, Front. Mar. Sci., 8, https://doi.org/10.3389/FMARS.2021.669329, 2021. 
Bentov, S. and Erez, J.: Impact of biomineralization processes on the Mg content of foraminiferal shells: A biological perspective, Geochem. Geophys. Geosyst., 7, Q01P08, https://doi.org/10.1029/2005GC001015, 2006. 
Bentov, S., Brownlee, C., and Erez, J.: The role of seawater endocytosis in the biomineralization process in calcareous foraminifera, P. Natl. Acad. Sci. USA, 106, 21500–21504, https://doi.org/10.1073/pnas.0906636106, 2009. 
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Short summary
Foraminifera are tiny marine organisms that build shells and have evolved different ways of doing so over millions of years. By comparing two major groups living side by side in the Mediterranean Sea, this study shows that their shells record clear, systematic chemical differences. These contrasts reveal fundamentally different shell-building strategies shaped by evolution, not just by the surrounding environment.
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