Sustainable coastal social-ecological systems: how do we define “coastal”?

Coastal social-ecological systems (SES) are home to over 500 million people and one of the most productive and diverse ecosystems in the world. In recent years, coastal SES are experiencing severe threat from an increasing population, resource exploitation, and global environmental change (e.g. climate change), which have devastating societal impacts in coastal areas. Despite several global, national, and local initiatives, there is a growing consensus that coastal resources are depleting and increasing conflicts in coastal areas. Recognizing the global call to understand social–ecological interactions for implementing development practices, this special issue features a suite (seven) of articles advancing the understanding of the sustainability of social and ecological interactions within coastal areas through theoretical SES approaches and related analytical methods. In this editorial of this special issue, we also argued that coastal area needs to define from SES perspectives, which have received less attention compared to ecological and social perspectives. We hope that this special issue will stimulate the debate and further thinking of how coastal SES can be managed sustainably by conceptualizing and understanding the complex dynamics (interaction, feedback) of SES.