The effect of sea‐level rise on coastal geomorphology

Sustainable management of coastal resources requires that future generations of people and wildlife enjoy an ongoing and equitable level of environmental quality ( Crooks & Turner 1999 ). The UK coast is, however, difficult to manage, being inhabited by a population with assets entrenched behind old flood defences and under threat from the combined risks of flooding and habitat change associated with rising sea‐levels. Adopting a static policy approach towards sea‐level rise conflicts with sustaining a dynamic coastal system that responds to perturbations via sediment movement and long‐term evolution. At many locations maintaining a resilient coast demands the availability of space and sediments, but both are in short supply. Future management should incorporate adaptive measures, including strategic large‐scale coastal floodplain reactivation, to support a resilient geomorphic response to sea‐level rise. Management decisions will have major implications for coastal waterbirds.