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Methods for monitoring urban street litter: a comparison of municipal audits and an app-based citizen science approach
Summary
Comparing citizen science litter audits with professional municipal audits, this study found that app-based community monitoring can generate high-quality data on street litter and plastic pollution comparable to formal assessments. Scaling up plastic pollution monitoring through citizen involvement could dramatically expand the geographic coverage and frequency of data collection at low cost.
Non-traditional methods, including citizen (or participatory) science and professional litter audits can provide high quality data for understanding street litter and associated plastic pollution.