The location of the marsh edge is restricted by two interacting factors: inundation time and bed level change. For vegetation establishment to withstand longer inundation stress, more stable bed levels are required so that plants are not disturbed. Vice versa, to withstand more dynamic bed levels that disturb plant growth, lower inundation stress is required, so that plants grow fast enough to recover from the stress. Moreover, the seaward growth and landward retreat of the marsh edge is driven by the magnitude of daily mild wave conditions and sediment availability. Periods of small waves and/or large sediment availability enable the marsh to grow seaward and vice versa. Short-term high waves affect establishing juvenile salt marshes, resulting in a retreating marsh edge. All processes resulting in retreat and expansion of the salt marsh edge, affect the wave attenuating capacity. Generally, the larger the cross-shore width of the salt marsh, the larger the wave attenuating capacity. Nevertheless, both artificial marshes and existing salt marshes contribute to the wave attenuation under a range of hydrodynamic conditions.
|Qualification||Doctor of Philosophy|
|Award date||22 Jan 2021|
|Place of Publication||Enschede|
|Publication status||Published - 2021|
- Salt marsh
- Nature Based Flood Defense
- Building with Nature
- Numerical modelling
- Field observations
- Tidal flat
- Coastal zone
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Data presented in the paper: “Field-based decadal wave attenuating capacity of combined tidal flats and salt marshes”
Data presented in the paper "Quantifying bed level change at the transition of tidal flat and salt marsh: can we understand the lateral location of the marsh edge?"
Willemsen, P. W. J. M. (Creator), Borsje, B. W. (Creator), Hulscher, S. J. M. H. (Creator), van der Wal, D. (Creator), Zhu, Z. (Creator), Evans, B. (Creator), Bouma, T. (Creator) & Möller, I. (Creator), 4TU.Centre for Research Data, 2018