Articles | Volume 23, issue 2
https://doi.org/10.5194/bg-23-751-2026
https://doi.org/10.5194/bg-23-751-2026
Research article
 | 
26 Jan 2026
Research article |  | 26 Jan 2026

Sea-level rise in a coastal marsh: linking increasing tidal inundation, decreasing soil strength and increasing pond expansion

Mona Huyzentruyt, Lennert Schepers, Matthew L. Kirwan, Glenn R. Guntenspergen, and Stijn Temmerman

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Cited articles

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Brooks, H., Moeller, I., Spencer, T., Royse, K., Price, S., and Kirkham, M.: How strong are salt marshes? Geotechnical properties of coastal wetland soils, Earth Surface Processes and Landforms, 47, 1390–1408, https://doi.org/10.1002/esp.5322, 2022. 
Brooks, H., Moeller, I., Spencer, T., and Royse, K.: Shear strength and erosion resistance of salt marsh substrates: Which method to use?, Estuarine, Coastal and Shelf Science, 292, https://doi.org/10.1016/j.ecss.2023.108452, 2023. 
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Short summary
In some tidal marshes, vegetation can convert to ponds as a result of sea level rise. We investigated to what extent this is related to decreasing strength of the marsh soil in relation to sea level rise. We found a reduction of marsh soil strength in areas with more inundation by sea water and more ponding, which results in easier erosion of the marsh and thus further expansion of ponds. This decrease in marsh soil strength is highly related to lower content of roots in the soil.
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