![]() ![]() Marine plastic debris is abundant in the global ocean ( Browne et al., 2015 Lebreton et al., 2019) and is likely to increase in the coming decades if waste-management systems across the globe do not improve ( Lebreton and Andrady, 2019 Lau et al., 2020). The results indicate that using the most effective centrality for finding cleanup locations is a good strategy for heavily polluted regions if the distribution of marine plastic debris on the coastlines is unknown and limited cleanup resources are available. Locations with a high retention rate are particularly favorable for cleanup. ![]() We have found four network centralities that provide the best coastline ranking to optimize the cleanup effort based on various impact metrics. A network is constructed from a Lagrangian simulation describing the flow of macroplastic between the various islands within the Galapagos Marine Reserve, where the nodes represent locations along the coastline and the edges the likelihood of plastic leaving one location and beaching at another. To optimize efforts, we have developed a methodology to identify the most effective cleanup locations on the Galapagos Islands using network theory. ![]() Unfortunately, the islands are polluted by marine plastic debris and the island authorities face the challenge to effectively remove plastic from its shorelines owing to limited resources. The Galapagos Marine Reserve was established in 1986 to ensure protection of the islands' unique biodiversity. ![]()
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