Developing a harmonized decision framework for shoreline marine debris monitoring across APEC economies

This study presents a harmonized decision framework to guide APEC economies in designing shoreline marine debris monitoring programs. By reviewing 31 monitoring programs, we identified five core elements of goals/objectives, debris targets, spatial scale, data collection and management practices and developed eleven decision criteria to guide program design, including objectives, debris size, categories, spatial scale, site selection, training, intervals, measurements, quality control, database management, and data analysis. The study emphasizes tailoring programs to local contexts while ensuring global comparability. Case studies from Peru and Chile validate the framework's adaptability, addressing diverse environmental and economic needs. Key findings highlight the importance of resource efficiency, quality assurance, and technological tools for data management. The framework balances standardization with local adaptability, promoting globally comparable monitoring efforts.