2026-04-14T04:20:59Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4071592026-02-02T09:05:04Zcom_2072_1033col_2072_452950

What-if nature-based storm buffers on mitigating coastal erosion Chen, Wei Staneva, Joanna Jacob, Benjamin Sánchez Artús, Xavier Wurpts, Andreas Universitat Politècnica de Catalunya. Doctorat en Ciències del Mar Universitat Politècnica de Catalunya. LIM/UPC - Laboratori d'Enginyeria Marítima Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes Coastal engineering Nature-based solutions Seagrass Storm surge Coastal protection XBeach Enginyeria de costes Creating ecosystem buffers in intertidal zones, such as seagrass meadows, has gained increasing attention as a nature-based solution for mitigating storm-driven coastal erosion. This study presents what-if scenarios using an integrated model framework to determine the effectiveness and strategies for planting seagrass to reduce coastal erosion. The framework comprises two levels of simulation packages. The first level is a regional-scale coupled hydrodynamic model that simulates the processes of a specific storm and provides boundary forces for the morphodynamic model XBeach to apply at the next level, which simulates nearshore morphological evolution. The framework is applied to the open coast of Norderney in the German Bight of the North Sea. We demonstrate that optimising the location and size of seagrass meadows is crucial to increase the efficiency of onshore sediment erosion mitigation. For a specific depth range, depending on the storm's intensity, the most significant reduction in erosion may not be achieved by starting the meadow at the depth that permits the largest meadow size. To maintain a significant coastal protection effect, seagrass density and stem height should be considered together, ensuring erosion reduction by at least 80 % compared to the unprotected coast. This study provides valuable insights for the design and implementation of seagrass transplantation as a nature-based solution, highlighting the importance of considering location, size, density, and stem height when using seagrass meadows for coastal protection. Peer Reviewed Postprint (author's final draft) 2024-06 Article Chen, W. [et al.]. What-if nature-based storm buffers on mitigating coastal erosion. "Science of the total environment", Juny 2024, vol. 928, núm. article 172247. 0048-9697 https://hdl.handle.net/2117/407159 10.1016/j.scitotenv.2024.172247 eng https://www.sciencedirect.com/science/article/abs/pii/S0048969724023908 info:eu-repo/grantAgreement/EC/H2020/101037097/EU/Large scale RESToration of COASTal ecosystems through rivers to sea connectivity/REST-COAST http://creativecommons.org/licenses/by-nc-nd/4.0/ Restricted access - publisher's policy Attribution-NonCommercial-NoDerivatives 4.0 International application/pdf Elsevier