Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 20
Articles | Volume 23, issue 20
https://doi.org/10.5194/bg-23-7327-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-7327-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 20
Research article
 | 
20 Oct 2026
Research article |  | 20 Oct 2026

Different paths, same destination: similar benthic nitrogen cycling sustained by distinct biogeochemical mechanisms in artificialized coastal systems

Ludovic Pascal, Éléonore Dansereau-Macias, Carole-Anne Guay, David Didier, Christian Nozais, Luc Sirois, Faten Zouaghi, and Gwénaëlle Chaillou

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Short summary
Coastal structures built to protect against rising sea often change local environments. We studied how a breakwater in the Saint Lawrence Estuary altered sediments and marine organisms. The structure led to accumulation of fine, organic-rich sediments with different communities dominated by worms rather than mollusks. Surprisingly, the ability to filter nitrogen from water was similar between altered and natural areas, suggesting ecosystems can maintain some functions through different pathways.
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