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    Microplastic intrusion into the zooplankton, the base of the marine food chain: Evidence from the Arabian Sea, Indian Ocean

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    Date
    2023
    Author
    Goswami, P.
    Selvakumar, Narasimman
    Verma, Pankaj
    Saha, M.
    Suneel, V.
    Vinithkumar, N.V.
    Dharani, G.
    Rathore, Chayanika
    Nayak, Jibananand
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    Abstract
    Microplastics (MPs) are ubiquitous in the marine environment, yet information regarding their occurrence in the food web is limited.We investigated the concentration and composition of MPs in water and diverse zooplankton groups from the Arabian Sea basin.Forty-one zooplankton tows were collected with a bongo net (330 �m mesh) from the Arabian Sea in January 2019.MPs in the surface water varied between 0 and 0.055 particles/m3, with a relatively higher concentration (0.013 � 0.002 particles/m3) in the central Arabian Sea.Though fibrous MPs were most abundant in the seawater (77.14 %), zooplankton prefers small fragments (55.3 %).The size of MPs was distinctly smaller (277.1 � 46.74 �m) in zooplankton than that in seawater (864.32 � 73.72 �m), and MPs bioaccumulation was observed in almost all the zooplankton functional groups.Polymer composition revealed polyamide, polyethylene, polypropylene, and PVC were abundant in water and zooplankton, suggesting that the textile, fishing, shipping, and packaging industries are significant sources.The prevailing northeasterly winds, strong West India Coastal Current, and conducive westward radiated Rossby wave during January 2019 have carried the microplastic contaminated water mass away from the coast, posing a threat to the open ocean ecosystems.These results demand further attention to investigate the state of plastic pollution in the Arabian Sea basin
    URI
    https://doi.org/10.1016/J.SCITOTENV.2022.160876
    https://drs.nio.org/drs/handle/2264/8930
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