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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Sign in to save

Accumulation of microplastics in a downstream area of a semi-enclosed bay: Implications of input from coastal currents

The Science of The Total Environment 2021 38 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Daoji Li Daoji Li, Zhihua Feng, Zhihua Feng, Zhihua Feng, Zhiwei Zhang, Rui Wang, Rui Wang, Jiaxuan Wang, Kai Liu, Zhihua Feng, Zhihua Feng, Zhihua Feng, Tao Zhang, Zhihua Feng, Zhihua Feng, Daoji Li Zhiwei Zhang, Rui Wang, Jiaxuan Wang, Rui Wang, Rui Wang, Zhihua Feng, Daoji Li, Hui Wu, Rui Wang, Rui Wang, Zhihua Feng, Daoji Li, Jiaxuan Wang, Daoji Li, Daoji Li Daoji Li, Daoji Li, Daoji Li, Rui Wang, Zhihua Feng, Zhihua Feng, Daoji Li Daoji Li Zhihua Feng, Zhihua Feng, Daoji Li Daoji Li Zhihua Feng, Zhiwei Zhang, Daoji Li Zhihua Feng, Zhihua Feng, Daoji Li, Zhihua Feng, Rui Wang, Hui Wu, Jiaxuan Wang, Daoji Li Zhihua Feng, Daoji Li Daoji Li Zhihua Feng, Daoji Li Zhihua Feng, Daoji Li Daoji Li Daoji Li Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li Zhihua Feng, Daoji Li Zhihua Feng, Daoji Li Daoji Li Rui Wang, Jiaxuan Wang, Zhihua Feng, Daoji Li Daoji Li Daoji Li Daoji Li, Daoji Li, Daoji Li, Daoji Li Daoji Li, Daoji Li, Daoji Li, Tao Zhang, Daoji Li, Daoji Li Daoji Li Kai Liu, Zhihua Feng, Kai Liu, Kai Liu, Jiaxuan Wang, Rui Wang, Rui Wang, Jiaxuan Wang, Daoji Li Rui Wang, Daoji Li Daoji Li Daoji Li Rui Wang, Daoji Li Daoji Li, Daoji Li, Daoji Li, Daoji Li, Zhihua Feng, Daoji Li, Daoji Li Zhihua Feng, Daoji Li Daoji Li Daoji Li Daoji Li Daoji Li Daoji Li Daoji Li Daoji Li Daoji Li Kai Liu, Rui Wang, Zhiwei Zhang, Tao Zhang, Zhihua Feng, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Daoji Li, Zhihua Feng, Daoji Li, Zhihua Feng, Zhihua Feng, Daoji Li Daoji Li, Daoji Li, Daoji Li, Daoji Li Zhihua Feng, Daoji Li, Daoji Li, Zhihua Feng, Daoji Li Zhihua Feng, Zhiwei Zhang, Zhihua Feng, Zhihua Feng, Zhihua Feng, Zhihua Feng, Zhihua Feng, Daoji Li Zhihua Feng, Jiaxuan Wang, Daoji Li Zhihua Feng, Zhihua Feng, Zhihua Feng, Daoji Li Daoji Li, Zhihua Feng, Daoji Li Daoji Li, Zhihua Feng, Daoji Li Daoji Li, Zhihua Feng, Daoji Li, Daoji Li Zhihua Feng, Rui Wang, Daoji Li Zhihua Feng, Zhihua Feng, Zhihua Feng, Zhihua Feng, Zhihua Feng, Daoji Li Zhihua Feng, Zhihua Feng, Daoji Li Zhihua Feng, Zhihua Feng, Zhihua Feng, Zhihua Feng, Kai Liu, Zhihua Feng, Daoji Li, Daoji Li, Rui Wang, Zhihua Feng, Zhihua Feng, Zhihua Feng, Zhihua Feng, Daoji Li, Zhihua Feng, Daoji Li, Daoji Li Daoji Li Zhiwei Zhang, Daoji Li Zhihua Feng, Daoji Li, Zhihua Feng, Zhihua Feng, Zhiwei Zhang, Daoji Li Daoji Li, Daoji Li, Daoji Li Daoji Li Daoji Li, Daoji Li Hui Wu, Daoji Li Daoji Li, Daoji Li

Summary

Researchers found that microplastic abundance in Haizhou Bay sediments ranged from 10.94 to 1,309 particles per kilogram, with intertidal zones containing more microplastics than supratidal areas and significant seasonal variation linked to coastal current dynamics. The findings highlight how semi-enclosed bay geometry concentrates microplastic accumulation downstream.

Study Type Environmental

Coastal beaches are a vital transitional zone in which terrestrial microplastics (MPs) enter the oceans. However, little is known about the impact of coastal currents on the dispersion and accumulation of MPs, especially in semi-enclosed bays. To address this knowledge gap, we investigated the spatiotemporal variation of MPs in the coastal sediments of Haizhou Bay. The abundance of MPs ranged from 10.94 n/kg to 1309.02 n/kg. Overall, a higher amount of MPs was found in intertidal sediment than in the supratidal zone. Significant seasonal variation was observed only in the intertidal areas of Haizhou Bay, suggesting that hydrodynamics plays a critical role shaping MP abundance. Statistical analyses revealed a roughly exponential increase of MP abundance with distance from the coast, and that a relatively higher abundance of MPs would be found at offshore sites in downstream areas. These results suggest that coastal currents are important contributors of MPs. A numerical model of vertical profiles estimated the total inventory of MPs in coastal areas to be 13.83-580 trillion pieces. Our results suggest a neglected sink of MPs in the sedimentary environments of coastal regions. As a result, the amount of MPs in coastal regions in previous studies could have been underestimated.

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