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Cigarette butt pollution in popular beaches of Morocco: Abundance, distribution, and mitigation measures
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This study surveyed cigarette butt pollution on eleven Moroccan Mediterranean beaches from 2018 to 2023, finding cigarette butts were the most common type of litter. Pollution levels varied by beach type, season, and visitor density, highlighting the need for targeted local action against this major source of plastic waste.
Abstract Cigarette butts pose a significant challenge in managing solid litter, with an estimated 4.95 trillion of them being discarded into the environment annually. This study investigated the pollution of eleven beaches along the Moroccan Mediterranean by cigarette butts compared to other types of marine litter between 2018 and 2023. Sampling was conducted using the visual survey technique according to a standardized protocol. A total of 50,575 items were collected with cigarette butts (14.62%) and plastic caps/lids drinks (10.93%) being the most common. Our survey of eleven beaches revealed 7395 cigarette butts, giving an average density of 0.06/m 2 comparable to other countries in the Mediterranean. The analysis of the results shows significant differences in the abundance cigarette butts according to the beach typology, seasonality, sediment type, and number of beach users. Moreover, the study discovered a decrease in beach pollution during the COVID-19 pandemic lockdown, resulting in less litter collected compared to pre- and post-pandemic periods. The Cigarette Butt Pollution Index was categorized as very low pollution in M’diq and Kaa Asrass, low pollution in Ksar Sghir, Fnideq, Amsa, Oued Laou, significant pollution in Martil and Nador and sever pollution in Saidia and Sababia. The CBPI was higher during summer and winter, significantly associated with the density levels of beach users. The study recommends immediate action by the local administration to prevent the potential pollution of groundwater and sand by toxic substances leached from cigarette butts.
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