Guest Edited Collection: “Ecohydraulics” in river and coastal restoration

Ecohydraulics sits at the dynamic intersection of fluid mechanics and ecological function. As the impacts of climate change, urbanization, and industrial expansion intensify, this emerging discipline offers powerful tools for restoring and managing rivers, lakes, and coastal zones through nature-based, science-driven solutions. By integrating hydrodynamic principles with ecological objectives, ecohydraulics enables the design and assessment of interventions that not only rehabilitate degraded systems but also enhance long-term environmental resilience and sustainability. This Scientific Reports Collection highlights recent advances across experimental, modeling, and artificial-intelligence (AI)-driven approaches-from turbulence-based habitat design to coastal wave attenuation and fish-migration modeling-demonstrating how ecohydraulics connects scientific innovation with practical restoration and sustainable water management.