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Differential impact of planktonic and periphytic diatoms on aggregation and sinking of microplastics in a simulated marine environment

Marine Pollution Bulletin 2024 12 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Young Kyun Lim, Young Kyun Lim, Young Kyun Lim, Sang Hee Hong Kyun‐Woo Lee, Jae Gon Park, Young Kyun Lim, Young Kyun Lim, Young Kyun Lim, Jae Gon Park, Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Young Kyun Lim, Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Young Kyun Lim, Young Kyun Lim, Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Young Kyun Lim, Young Kyun Lim, Young Kyun Lim, Kyun‐Woo Lee, Young Kyun Lim, Sang Hee Hong Kyun‐Woo Lee, Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Kyun‐Woo Lee, Sang Hee Hong Sang Hee Hong Kyun‐Woo Lee, Kyun‐Woo Lee, Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Jae Gon Park, Sang Hee Hong Sang Hee Hong Jae Gon Park, Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Seung Ho Baek, Seung Ho Baek, Seung Ho Baek, Kyun‐Woo Lee, Kyun‐Woo Lee, Kyun‐Woo Lee, Sang Hee Hong Sang Hee Hong Sang Hee Hong Kyun‐Woo Lee, Sang Hee Hong Sang Hee Hong Sang Hee Hong Young Kyun Lim, Sang Hee Hong Sang Hee Hong Sang Hee Hong Young Kyun Lim, Sang Hee Hong Seung Ho Baek, Sang Hee Hong Kyun‐Woo Lee, Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong Sang Hee Hong

Summary

Researchers compared how two types of diatoms interact with microplastics in a simulated marine environment. They found that the surface-dwelling diatom Navicula formed aggregates with all tested microplastics within one week, while the free-floating diatom only formed aggregates with polyethylene spheres after nine weeks. The study suggests that different types of marine algae play very different roles in determining how quickly microplastics sink to the ocean floor.

Polymers

HDPE PE PET

Aggregation between microalgae and microplastics (MPs) significantly influences the MPs distribution in marine environment. We investigated the effects of two diatoms, the planktonic Pseudo-nitzschia pungens and the periphytic Navicula sp., on the formation and sinking of aggregates when they were cultured with four different types of MPs: small and large polyethylene terephthalate (PET) fibers, and low-density and high-density polyethylene (PE) spheres. Navicula sp. formed aggregates with all MPs within one week, but P. pungens only formed aggregates with PE spheres after 9 weeks. The PE-Navicula sp. aggregates settled about 100 times faster than the PE-P. pungens aggregates (12.2 vs. 0.1 mm s), and this difference was most likely due to aggregate shape rather than size. Our findings indicate that the periphytic Navicula sp. had a greater effect on the settling of MPs than the planktonic P. pungens. These findings have implications for understanding the behavior of MPs in marine environments.

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