A 400-metre fishery pier on Thailand’s Ban Khlong Wan coastline was followed by dramatic changes in the shape and composition of the shore, with one section of beach advancing by as much as 250 metres. The findings come from a study published in Scientific Reports on August 22, 2025, titled Unintended coastal transformation from small-scale infrastructure and land use change . Researchers combined historical shoreline records, high-resolution LiDAR observations, beach sediment analysis and upstream land-use data to reconstruct how the coastline changed between 1966 and 2023. They found that the pier disrupted the movement of sand along the coast, while changes upstream contributed additional fine sediment. The result was not a simple story of erosion caused by coastal structures. Instead, the researchers found that infrastructure, sediment transport and changes to wetlands and aquaculture interacted to transform different sections of the coastline in different ways. This comprehensive analysis underscores why coastal management strategies must consider multiple interacting factors rather than isolated infrastructure decisions when addressing complex shoreline transformation challenges.
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