Marine plastic litter (MPL) poses a significant threat to marine ecosystems, wildlife, and human health globally. This study employs the adaptive capacity framework and Importance-Performance Analysis (IPA) method to investigate residents' perceptions of adaptive indicators for managing MPL on Galang Island, Indonesia. The research finds that while residents recognize the importance of these indicators, they perceive their implementation to be lacking. Certain adaptation indicators, such as strengthening law enforcement measures, developing waste collection systems, promoting the 3 R (Reduce, Reuse, and Recycle) solutions, and controlling waste on land and in the ocean, are deemed effective in mitigating plastic pollution. The study also reveals that demographic factors like gender, marital status, age, and income have minimal influence on waste management perceptions, with education being a primary determinant of awareness. These findings lay the foundation for community-based adaptation indicators in MPL management, offering insights into the effectiveness of current interventions and enabling the formulation of more targeted strategies. Ultimately, this research aims to enhance the resilience of marine ecosystems and coastal communities in Indonesia against the challenges posed by plastic pollution.
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