Nature-based Solutions   and sediment-based solutions  are increasingly considered for environmental, economic and/or societal reasons . Coastal wetlands can be effective to reduce wave height and form habitats, but their feasibility and effectiveness is limited for densely populated areas with competing land use, runoff of pollution, sediment-starved deltas like the Rhine Delta  and rapid SLR . While losses of wetlands could be minor if warming stays below 1.7ºC GWL, at high warming or SLR above 0.5 m large-scale losses of these habitats will impact their ecological importance, ecosystem function  and their ability to protect coastlines . A combination with structural defences could reduce risk in urbanised coastal regions . Accommodation through elevated or floating houses have been implemented and proposed locally within cities as part of a hybrid strategy together with protection and as a way of innovative urban development .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report