While CBA approaches to adaptation projects can increase community ownership and commitment to project implementation, these can also face challenges. In Pele Island, Vanuatu, implementation of CBA projects has experienced significant failures due to elite capture of project management, internal power dynamics within communities, and different priorities of communities living across the island that were supposed to be all responsible for implementing whole-of- island projects . Similarly, in Samoa, consultations with community leaders led to the misplacement of a revetment wall that increased flooding in the area against engineering advice . Also, community scale might not always be the best fit if the best scale to leverage adaptation is across catchment or whole-of-island scale .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report