Abstract
Channel networks are key to coastal wetland functioning and resilience under climate change. Vegetation affects sediment and hydrodynamics in many different ways, which calls for a coherent framework to explain how vegetation
shapes channel network geometry and functioning. Here, we introduce an idealized model that shows how coastal wetland vegetation creates more complexly branching networks by increasing the ratio of channel incision
versus topographic diffusion rates, thereby amplifying the channelization
feedback that recursively incises finer-scale side-channels. This complex-ification trend qualitatively agrees with and provides an explanation for field
data presented here as well as in earlier studies. Moreover, our model
demonstrates that a stronger biogeomorphic feedback leads to higher and
more densely vegetated marsh platforms and more extensive drainage networks. These findings may inspire future field research by raising the
hypothesis that vegetation-induced self-organization enhances the storm
surge buffering capacity of coastal wetlands and their resilience under sealevel rise
shapes channel network geometry and functioning. Here, we introduce an idealized model that shows how coastal wetland vegetation creates more complexly branching networks by increasing the ratio of channel incision
versus topographic diffusion rates, thereby amplifying the channelization
feedback that recursively incises finer-scale side-channels. This complex-ification trend qualitatively agrees with and provides an explanation for field
data presented here as well as in earlier studies. Moreover, our model
demonstrates that a stronger biogeomorphic feedback leads to higher and
more densely vegetated marsh platforms and more extensive drainage networks. These findings may inspire future field research by raising the
hypothesis that vegetation-induced self-organization enhances the storm
surge buffering capacity of coastal wetlands and their resilience under sealevel rise
| Original language | English |
|---|---|
| Article number | 7158 |
| Journal | Nature communications |
| Volume | 14 |
| Issue number | 1 |
| Early online date | 7 Nov 2023 |
| DOIs | |
| Publication status | Published - 2023 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 13 Climate Action
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SDG 14 Life Below Water
Keywords
- ITC-ISI-JOURNAL-ARTICLE
- ITC-GOLD
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Vegetation controls on channel network complexity in coastal wetlands - Dataset
van de Vijsel, R. C. (Creator), van Belzen, J. (Creator), Bouma, T. J. (Creator), van der Wal, D. (Creator), Borsje, B. W. (Creator), Temmerman, S. (Creator), Cornacchia, L. (Creator), Gourgue, O. (Creator) & van de Koppel, J. (Creator), 4TU.Centre for Research Data, 8 Nov 2023
DOI: 10.4121/8d361887-ec02-4472-a8eb-a9d0f3eacfd6, https://data.4tu.nl/datasets/8d361887-ec02-4472-a8eb-a9d0f3eacfd6 and 2 more links, https://doi.org/10.4121/8d361887-ec02-4472-a8eb-a9d0f3eacfd6.v1, https://data.4tu.nl/datasets/8d361887-ec02-4472-a8eb-a9d0f3eacfd6/1 (show fewer)
Dataset
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