Study on the Effectiveness of Environmentally Friendly Breakwater Development in High Erosion Coastal Areas
Keywords:
Coastal Erosion , Environmentally Friendly Breakwater , Sustainable Coastal ManagementAbstract
Purpose: This study investigates the effectiveness of environmentally friendly breakwaters as a sustainable solution to mitigate severe coastal erosion. The research aims to evaluate not only the engineering performance of the structure but also its ecological impacts and community acceptance, thereby addressing the multidimensional nature of coastal protection.
Subjects and Methods: A Before–After–Control–Impact (BACI) design was employed to compare shoreline conditions at intervention and control sites. Hydrodynamic data were collected using Acoustic Doppler Current Profilers (ADCPs), while shoreline changes were monitored with UAV-based photogrammetry and analyzed in DSAS. Sediment samples, ecological indicators (benthic diversity, vegetation cover, water quality), and socio-economic perceptions (n = 64 respondents) were assessed. Numerical modeling with SWAN and XBeach complemented field observations.
Results: The breakwater reduced significant wave height by 42%, with an average transmission coefficient (Kt) of 0.58. Shoreline trajectories shifted from net retreat (–1.1 m/year) to modest accretion (+0.4 m/year), and the sediment budget indicated a net gain of +6,250 m³. Ecological responses included increased benthic diversity (H’ rising from 1.62 to 2.05), expanded vegetation cover (+12.5%), and improved water clarity (turbidity reduced from 12.5 NTU to 7.9 NTU). Community surveys revealed strong acceptance, with 78% perceiving reduced coastal risk and 65% reporting improved fishing conditions, though concerns regarding maintenance costs persisted.
Conclusions: nvironmentally friendly breakwaters proved effective in reducing erosion, enhancing ecological functions, and gaining community support. These findings highlight their potential as viable alternatives to conventional hard defenses, particularly when integrated with broader nature-based solutions..
References
Castro, C. J. (2004). Sustainable development: mainstream and critical perspectives. Organization & Environment, 17(2), 195-225. https://doi.org/10.1177/1086026604264910
Gracia, A., Rangel-Buitrago, N., Oakley, J. A., & Williams, A. T. (2018). Use of ecosystems in coastal erosion management. Ocean & coastal management, 156, 277-289.
Jordan, P., & Fröhle, P. (2022). Bridging the gap between coastal engineering and nature conservation? A review of coastal ecosystems as nature-based solutions for coastal protection. Journal of Coastal Conservation, 26(2), 4. https://doi.org/10.1007/s11852-021-00848-x
Kopnina, H. (2016). The victims of unsustainability: A challenge to sustainable development goals. International Journal of Sustainable Development & World Ecology, 23(2), 113-121. https://doi.org/10.1080/13504509.2015.1111269
Morris, R. L., Konlechner, T. M., Ghisalberti, M., & Swearer, S. E. (2018). From grey to green: Efficacy of eco‐engineering solutions for nature‐based coastal defence. Global change biology, 24(5), 1827-1842. https://doi.org/10.1111/gcb.14063
Owens, P. N. (2020). Soil erosion and sediment dynamics in the Anthropocene: a review of human impacts during a period of rapid global environmental change. Journal of Soils and Sediments, 20(12), 4115-4143. https://doi.org/10.1007/s11368-020-02815-9
Romão, F., Lima, M., & Coelho, C. (2024). A State-of-the-Art Review on Storm Events, Overtopping and Morphological Changes in Front of Coastal Structures. Journal of Marine Science and Engineering, 13(1), 40. https://doi.org/10.3390/jmse13010040
Saiz, A. (2024). Negotiating ROI (Return on Investment) for ROI (Return on Impact) A Pre-Feasibility Study of Socio-Eco Resort Development in Eastern Indonesia (Doctoral dissertation, Massachusetts Institute of Technology).
Sanders, R. (2016). The flawed paradigms of economics and sustainable development. International Journal of Sustainable Development, 19(2), 110-126.
Sarker, S. (2024). Modelling the Impacts of Sea Level Rise on the Offshore Island of Bangladesh: A Study using Delf3D Hydrodynamic Model. Available at SSRN 4992744. https://dx.doi.org/10.2139/ssrn.4992744
Spiridonov, V., Ćurić, M., & Novkovski, N. (2025). The Planet Under Pressure: Challenges in the Twenty-First Century. In Atmospheric Perspectives: Unveiling Earth's Environmental Challenges (pp. 343-400). Cham: Springer Nature Switzerland. https://doi.org/10.1007/978-3-031-86757-6_13
Suedel, B. C., Calabria, J., Bilskie, M. V., Byers, J. E., Broich, K., McKay, S. K., ... & Dolatowski, E. (2022). Engineering coastal structures to centrally embrace biodiversity. Journal of Environmental Management, 323, 116138. https://doi.org/10.1016/j.jenvman.2022.116138
Tsekouropoulos, G., Vasileiou, A., Hoxha, G., Dimitriadis, A., & Zervas, I. (2024). Sustainable approaches to medical tourism: Strategies for Central Macedonia/Greece. Sustainability, 16(1), 121. https://doi.org/10.3390/su16010121
Vieira, B. F. V. (2022). Engineering with Nature: An innovative solution for coastal erosion protection.
Vousdoukas, M. I., Ranasinghe, R., Mentaschi, L., Plomaritis, T. A., Athanasiou, P., Luijendijk, A., & Feyen, L. (2020). Sandy coastlines under threat of erosion. Nature climate change, 10(3), 260-263. https://doi.org/10.1038/s41558-020-0697-0
Williams, A. T., Giardino, A., & Pranzini, E. (2016). Canons of coastal engineering in the United Kingdom: seawalls/groynes, a century of change?. Journal of Coastal Research, 32(5), 1196-1211. https://doi.org/10.2112/JCOASTRES-D-15-00213.1
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