Marine and coastal ecosystem-based adaptation in Asia and Oceania: review of approaches and integration with marine spatial planning

There is growing interest in using ecosystem-based adaptation (EbA) to maintain or restore ecosystem services to increase human resilience to climate change. However, to date, the focus on EbA has been on conceptualising the approach and encouraging its use, rather than understanding EbA in practice. We review the EbA literature to synthesise where, why and how marine and coastal EbA projects have been implemented and examine how EbA has been integrated with marine spatial planning. We focus specifically on EbA projects in Asia and Oceania, where climate variability and dependence on marine and coastal ecosystems is high. Most projects were found in the grey literature, implemented in developing countries, and targeted extreme events and sea level rise. Mangroves, particularly mangrove restoration, was the most common ecosystem used, followed by coral reefs. EbA across ecosystems commonly targeted capacity building and livelihood enhancement, and maintenance of wildlife, alongside shoreline protection for mangroves and food security for coral reefs. Integrated EbA and marine spatial planning projects were participatory, implemented at local–regional scales, displayed adaptive management, and community-based or shared governance. Our research helps to build an understanding of EbA in practice and a knowledge base to assist coastal communities in adapting to climate change.