Mangrove-inspired approach as an alternative to traditional coastal infrastructure to tackle erosion issues

Coastal erosion is a growing concern for many regions, threatening infrastructure, ecosystems, and local communities. Conventional hard-engineering solutions often lead to negative environmental impacts and disrupt natural coastal dynamics, while retreat and adaptation strategies can sometimes be challenging to implement. In response, we have been developing an innovative, nature-based approach inspired by the wave and current dissipating capabilities of mangrove ecosystems.

Mangroves, with their dense root systems, act as effective natural barriers, reducing wave energy, stabilizing sediments, and enhancing coastal resilience. Our project aims to replicate these benefits through a bio-inspired structure designed to mimic the intricate root networks of mangroves. This system uses strategically placed vertical and horizontal elements to dissipate wave energy and enhance sediment deposition, providing a sustainable method to control coastal erosion.

The design and implementation of this solution resulted from a collaborative effort among coastal engineers, ecologists, and numerical modelers. Advanced hydrodynamic simulations were conducted to assess and optimize the wave dissipation performance of the structure. A pilot installation at Grau d'Agde beach, a vulnerable site on the French Mediterranean coast, has provided promising initial results. Early monitoring data show significant reductions in wave energy and increased sediment retention, with promising ecological trends, indicating this nature-based approach can enhance coastal stability without compromising the local ecosystem.

This presentation will cover the design process, modelling results, and preliminary field data from the pilot project, illustrating the potential of bio-inspired solutions for addressing coastal erosion and providing insights for broader application in similar vulnerable coastal areas.

 

Keywords: Coastal Erosion, Nature-Based Solutions, Mangrove-Inspired Design, Wave Dissipation, Pilot Project, Field Monitoring, uUpscalling, Hydrodynamic Modeling.