Vegetation Reconfigures Barrier Coasts and Affects Tidal Basin Infilling Under Sea Level Rise
dc.contributor.author | Albernaz, MB | |
dc.contributor.author | Brückner, MZM | |
dc.contributor.author | Maanen, B | |
dc.contributor.author | Spek, AJF | |
dc.contributor.author | Kleinhans, MG | |
dc.date.accessioned | 2023-06-15T14:53:54Z | |
dc.date.issued | 2023-03-22 | |
dc.date.updated | 2023-06-15T14:33:04Z | |
dc.description.abstract | Worldwide, many tidal basins associated with barrier coasts have infilled over the past millennia due to the combination of sediment supply, wave-tidal sediment transport, and eco-engineering effects of vegetation. However, the biogeomorphological interactions between saltmarsh and the morphodynamics of an entire coastal barrier system are poorly understood, especially under sea level rise (SLR). Here, we study the evolution of a barrier coast for combinations of mud availability, presence of vegetation, and SLR. We developed a novel biogeomorphological model of an idealized barrier coast enclosing a tidal basin with sandy-clayey sediments that was subjected to tides and waves for a century. The morphodynamic Delft3D model was coupled to a vegetation code which accounts for the dynamics of marsh-type vegetation. Initially, vegetation contributed to reducing the tidal prism while sediment was imported. However, with SLR this trend was reversed and the tidal basins started to export sediment for vegetated runs after about 50–60 years while the unvegetated scenarios continued to infill in pace with the SLR. The sediment export was caused by cascading biomorphodynamic feedback effects triggered by vegetation which modified channel and shoal dynamics. Even under higher mud supply, the SLR resulted in vegetation collapse. The hypsometries, similar to natural systems, showed that vegetated systems converge to an alternative stable state condition. We conclude that the long-term resilience of the tidal basin associated with sediment infilling under SLR can be reduced by cascading large-scale effects of vegetation on the morphodynamics of barrier coasts. | en_GB |
dc.description.sponsorship | European Research Council (ERC) | en_GB |
dc.identifier.citation | Vol. 128(4), article e2022JF006703 | en_GB |
dc.identifier.doi | https://doi.org/10.1029/2022jf006703 | |
dc.identifier.grantnumber | 647570 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/133402 | |
dc.language.iso | en | en_GB |
dc.publisher | American Geophysical Union (AGU) / Wiley | en_GB |
dc.rights | © 2023. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | en_GB |
dc.title | Vegetation Reconfigures Barrier Coasts and Affects Tidal Basin Infilling Under Sea Level Rise | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2023-06-15T14:53:54Z | |
dc.identifier.issn | 2169-9003 | |
exeter.article-number | ARTN e2022JF006703 | |
dc.description | This is the final version. Available on open access from the American Geophysical Union via the DOI in this record | en_GB |
dc.description | Data Availability Statement: Delft3D steering settings from our reference scenarios (model 1 and model 5) and main model results are available at the repository YODA (Boechat Albernaz, 2022). Delft3D source code is freely distributed and available at the Deltares (SVN) repository from Boechat Albernaz (2019). The vegetation module is also available at Brückner (2020) based on Brückner et al. (2019). Data from natural systems (see Figure 9) were obtained from DGT (2011), Richardson et al. (2018), Donatelli et al. (2020), and Sievers et al. (2020). | en_GB |
dc.identifier.eissn | 2169-9011 | |
dc.identifier.journal | Journal of Geophysical Research: Earth Surface | en_GB |
dc.relation.ispartof | Journal of Geophysical Research Earth Surface, 128(4) | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2023-03-19 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2023-03-22 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2023-06-15T14:51:50Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2023-06-15T14:54:41Z | |
refterms.panel | C | en_GB |
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Except where otherwise noted, this item's licence is described as © 2023. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.