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| Main Authors: | , , , |
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| Format: | Artículo Open Access |
| Published: |
Wiley
2026
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| Online Access: | https://onlinelibrary.wiley.com/doi/10.1002/esp.70310 |
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Table of Contents:
- Temporal dune growth dynamics based on a 3‐year monitored dune featuring marram grass and brushwood fences Jennifer Derijckere Glenn Strypsteen Zeger Sierens Pieter Rauwoens Earth Surface Processes and Landforms Abstract To increase local flood protection and manage sand dynamics, a ‘Dune‐in‐Front‐of‐a‐Dike’ system was implemented at Raversijde beach in Belgium. This study aimed to answer the research question: How do different design choices, such as the use of (1) marram grass, (2) brushwood fences or (3) a combination of both, influence dune formation, morphology and sand‐trapping efficiency under site‐specific conditions? The objectives were to (i) quantify dune formation under each intervention, (ii) assess the long‐term sand‐trapping efficiency and (iii) evaluate the role of adaptive management on sustaining dune growth. Over 3 years, 27 monthly drone surveys quantified dune development and sand accumulation leading to a site‐specific conceptual model for dune development. In the first 6 months, both brushwood fence and marram grass zones trapped similar sand volumes (10 m 3 /m). Subsequently, the sand‐trapping efficiency of brushwood fences decreased as they became buried, while marram grass continued to accumulate sand. Together, they initially promoted rapid sand accumulation, but excessive burial led to vegetation die‐off, requiring human replanting to sustain dune growth. Over longer timescales (1.5 years), brushwood fences resulted in greater total sand accumulation and larger dune formation, but only when supported by active vegetation management. In contrast, areas planted with marram grass alone maintained sustained dune growth without the need for intervention. These findings highlight the importance of integrating both initial sand‐trapping interventions and longer‐term adaptive management to enhance dune resilience, morphology and ecosystem function in engineered coastal systems. 10.1002/esp.70310 http://onlinelibrary.wiley.com/termsAndConditions#vor