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Distribution and Source of Solid Waste Along the Jaconé-Saquarema (RJ) Beach Arc
Original title: Distribuição E Fonte De Resíduos Sólidos Ao Longo Do Arco Praial De Jaconé-saquarema (rj)
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This Portuguese-language study characterized the macro and micro solid waste debris along the 19 km Jacone-Saquarema coastal arc in Rio de Janeiro, Brazil, identifying waste composition, distribution, and sources. The research links debris types to nearby human land uses and coastal dynamics, providing data for targeted waste management interventions.
Este estudo objetivou caracterizar os macro e micro resíduos sólidos no arco praial de Jaconé-Saquarema (RJ) quanto à distribuição, composição e fontes, para identificar a relação dos materiais encontrados com os diversos usos e a dinâmica costeira. A área de estudo, com 19 km de extensão, compreende os municípios de Maricá (oeste) e Saquarema (leste), respectivamente. Os monitoramentos foram realizados em cinco locais ao longo do arco praial, entre verão e inverno de 2018. Os macro resíduos foram identificados numa área de 25x50m; os microplásticos foram extraídos de sedimentos coletados na linha de deixa, numa área de 1x1m e 5cm de profundidade. Os resultados mostram que o lixo composto por plásticos é predominante. Verificou-se uma maior concentração no setor oeste da praia de Jaconé e no verão. Apesar do maior fluxo de turistas no setor leste, o lixo é recolhido com frequência, o que não ocorre nos demais locais. Nessas praias de mar aberto, o lixo se encontra em grande parte desgastado, devido ao retrabalhamento pela ação das ondas. Alguns materiais encontrados (como inseticidas, desodorante e baldes) não são descartados por frequentadores locais, mas trazidos pelas correntes marinhas. Verificou-se a presença de microplásticos nas praias estudadas, com destaque para as fibras, provenientes da degradação de outros materiais.
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