Articles | Volume 23, issue 20
https://doi.org/10.5194/bg-23-7627-2026
© Author(s) 2026. 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-23-7627-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
29 Oct 2026
Research article |
| 29 Oct 2026
| 29 Oct 2026
Shell hash promotes growth in Pacific littleneck clams (Leukoma staminea) by altering pore water chemistry
Hannah L. Kempf
Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA
Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA 94923, USA
Alyssa J. Griffin
Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA
Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA 94923, USA
Gabriel Ng
California Department of Fish and Wildlife, Sacramento, CA 95814, USA
Tessa M. Hill
Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA
Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA 94923, USA
Tsim D. Schneider
Department of Anthropology, University of California Santa Cruz, Santa Cruz, CA 95064, USA
Sandra J. Carlson
Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA
Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA
Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA 94923, USA
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Short summary
We studied whether mixing crushed shell into sediment can help Pacific littleneck clams cope with acidic seawater. In a 90-day experiment, young clams grew better with shell material present, even under acidic conditions. The shell pieces raised sediment water acidity levels in a helpful way, and clam growth looked much like clams in normal seawater. This suggests a simple, practical way to protect valuable shellfish and support healthier coastal ecosystems.
We studied whether mixing crushed shell into sediment can help Pacific littleneck clams cope...
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