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Caracterização Dos Microplásticos Encontrados Na Zona Entremarés Do Parque Nacional De Jericoacoara, Ceará, Brasil
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Researchers characterized microplastics in beach sediment and four benthic species (bivalves, gastropods, barnacles) in the intertidal zone of Jericoacoara National Park, Brazil, finding fragments, fibers, and pellets from consumer products, with fragments most abundant and over 53% of particles smaller than 1 mm.
O presente trabalho avaliou a presença de microplásticos em três pontos no Parna de Jericoacoara, analisando o sedimento praial e quatro espécies bentônicas de recifes de arenito: o bivalve Brachidontes exustus, os gastrópodes Stramonita brasiliensis e Lottia subrugosa e a craca Chthamalus bisinuatus. Os resultados obtidos mostraram concentrações de microplásticos, classificados em fragmentos, fibras e pellets, provenientes de produtos de uso humano. Os fragmentos foram os polímeros mais abundantes no estudo e apresentaram diversidade de cores. As fibras foram a única classe encontrada em todos os pontos de coleta e os pellets, os menos abundantes no estudo. Também foram encontradas uma fibra na cor preta em B. exustus e uma fibra de cor azul em C. bisinuatus. Cinquenta e três vírgula noventa e dois por cento dos microplásticos encontrados no sedimento tinham dimensões menores que 1 mm. Os dados obtidos no presente trabalho indicam que os microplásticos estão presentes na zona praial e em animais suspensívoros de Jericoacoara, sendo necessário medidas de manejo e educação ambiental que auxiliem na conservação do Parna. Palavras-chave: impacto ambiental, praia, unidade de conservação.
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