Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 7
Articles | Volume 23, issue 7
https://doi.org/10.5194/bg-23-2477-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-2477-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 7
Research article
 | 
15 Apr 2026
Research article |  | 15 Apr 2026

Worms and storms: shedding light on bioturbation and physical mixing on an intertidal flat by combining multiple tracers

Tjitske J. Kooistra, Anna-Maartje de Boer, Tjeerd J. Bouma, Natascia Pannozzo, Stuart G. Pearson, Ad van der Spek, Henko de Stigter, Jakob Wallinga, Rob Witbaard, and Karline Soetaert

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Short summary
On intertidal flats, it is hard to distinguish sediment mixing by animals from reworking by waves and currents. We combined tracers to identify reworking of grains of different sizes on the short- and long term. Coarse (sand) grains were less mobile than fine (mud) grains, and partly kept their layering after deposition. The luminescence properties of sand grains can be used for sediment dating and can show sediment mixing, but this method needs to be tested more for young, intertidal sediments.
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