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Arctic threads: Microplastic fibres in Chukchi and Beaufort sea sediments
Summary
Researchers collected sediment samples from the Chukchi and Beaufort Seas in the Arctic and found microplastic fibers present at every sampling site. Synthetic fibers were the dominant type, likely originating from textiles and fishing activities transported by ocean currents. The study adds to growing evidence that even remote Arctic environments are not spared from microplastic contamination.
The influx of microplastics (MPs) into the Arctic Ocean poses a collective risk, particularly with pronounced sea ice depletion due to global warming. A total of 73 replicate sediment samples were collected at different depths (38 to 79 m) from Chukchi and the Beaufort Seas at 8 stations in the Arctic region during the R/V Mirai cruise (MR22-06C) from August to September 2022. The average concentration of MPs is 79.25 ± 31.08 items/kg d.w. Fibrous MPs of 0-1 mm size range are predominant, with blue being the most prevalent colour. Polymer characterization identified polyethylene (PE) as the predominant polymer. Arctic Ocean regions face heightened health risks from the coexistence of MPs and harmful additives, amplifying concerns over plastic pollution. The alarming surge in MPs within Arctic sediment underscores the urgent need for a proactive, collaborative approach to mitigate this environmental threat and its far-reaching impacts.
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