Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 8
Articles | Volume 23, issue 8
https://doi.org/10.5194/bg-23-2831-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-2831-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 8
Ideas and perspectives
 | Highlight paper
 | 
24 Apr 2026
Ideas and perspectives | Highlight paper |  | 24 Apr 2026

Ideas and perspectives: Mineralizing fluid control on foreign elements in biogenic CaCO3: insights from otoliths

Athina Kekelou, Gerald Langer, and Patrizia Ziveri

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Editorial statement
This paper, for the first time, demonstrates that the chemistry of otoliths (fish ear stones), which is an important archive for environmental reconstruction and fisheries science, is influenced by vital effects during mineralization. This finding has implications for the field of biomineralization as a whole and specifically for researchers working in marine biology, fisheries sciences and paleontology.
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Short summary
Fish otolith formation is key for understanding the incorporation of elements into biominerals. It is often assumed that the final step of biomineralization consists of inorganic precipitation as the fluid where biominerals form can hardly be sampled. Thanks to fish ear anatomy, this can be overcome with otoliths. By comparing otolith formation and inorganic precipitation, we proved that this assumption is not always true. Our findings could refine models and shed light on biomineralization.
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