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Impacts of Typhoon Mangkhut in 2018 on the deposition of marine debris and microplastics on beaches in Hong Kong

The Science of The Total Environment 2020 112 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.

Xiaoyu Xu, Xiaoyu Xu, Hoi‐Shing Lo, Hoi‐Shing Lo, Hoi‐Shing Lo, Hoi‐Shing Lo, Hoi‐Shing Lo, Hoi‐Shing Lo, Hoi‐Shing Lo, Xiaoyu Xu, Xiaoyu Xu, Xiaoyu Xu, Xiaoyu Xu, Beverly Hoi-Ki Po, Beverly Hoi-Ki Po, Chun‐Yuen Wong, Chun‐Yuen Wong, Chun‐Yuen Wong, Hoi‐Shing Lo, Victor Yan Kin Lee, Xiaoyu Xu, Hoi‐Shing Lo, Hoi‐Shing Lo, Hoi‐Shing Lo, Hoi‐Shing Lo, Siu Gin Cheung N.F.Y. Tam, N.F.Y. Tam, N.F.Y. Tam, N.F.Y. Tam, N.F.Y. Tam, N.F.Y. Tam, N.F.Y. Tam, N.F.Y. Tam, N.F.Y. Tam, Siu Gin Cheung Siu Gin Cheung Siu Gin Cheung Hoi‐Shing Lo, Beverly Hoi-Ki Po, Beverly Hoi-Ki Po, Chun‐Yuen Wong, Chun‐Yuen Wong, Chun‐Yuen Wong, Xiaoyu Xu, Xiaoyu Xu, Siu Gin Cheung Hoi‐Shing Lo, Siu Gin Cheung Siu Gin Cheung Siu Gin Cheung Siu Gin Cheung Hoi‐Shing Lo, Siu Gin Cheung Siu Gin Cheung Hoi‐Shing Lo, Hoi‐Shing Lo, Siu Gin Cheung Leung-Chun Wong, N.F.Y. Tam, Siu Gin Cheung Leung-Chun Wong, Siu Gin Cheung Hoi‐Shing Lo, Hoi‐Shing Lo, Chun‐Yuen Wong, Siu Gin Cheung Siu Gin Cheung Siu Gin Cheung N.F.Y. Tam, Siu Gin Cheung Xiaoyu Xu, Siu Gin Cheung Cheuk-Fung Wong, N.F.Y. Tam, N.F.Y. Tam, Siu Gin Cheung N.F.Y. Tam, Siu Gin Cheung N.F.Y. Tam, Cheuk-Fung Wong, Hoi‐Shing Lo, Siu Gin Cheung Hoi‐Shing Lo, Siu Gin Cheung N.F.Y. Tam, Siu Gin Cheung Chun‐Yuen Wong, Siu Gin Cheung Siu Gin Cheung Siu Gin Cheung N.F.Y. Tam, Siu Gin Cheung Hoi‐Shing Lo, N.F.Y. Tam, Xiaoyu Xu, Siu Gin Cheung Hoi‐Shing Lo, N.F.Y. Tam, Siu Gin Cheung Hoi‐Shing Lo, Siu Gin Cheung Siu Gin Cheung

Summary

Researchers assessed how Typhoon Mangkhut in 2018 affected the deposition of marine debris and microplastics on Hong Kong beaches, finding that the typhoon significantly redistributed both macro-debris and microplastics, with exposed beaches accumulating more material than protected ones. The study demonstrates that extreme weather events are important drivers of microplastic deposition dynamics in coastal environments.

Study Type Environmental

Storm surge and waves associated with tropical cyclones carry significant amounts of pollutants into the marine environment. This study evaluated the effects of Typhoon Mangkhut (7-18 September 2018) on marine debris pollution including macro-debris (>2.5 cm) and microplastics (5 μm-5 mm) in Hong Kong. Sampling was repeated on four beaches, two each from protected and exposed coastal areas, spanning from the eastern to western waters before and after the cyclone. For macro-debris, an average density of 0.047 items m and 0.54 items m was obtained before and after the cyclone, respectively or an 11.4-fold increase, with plastic being the most dominant type (61.9-93.3% and 80.7-92.4% before and after the cyclone, respectively) among total beached debris in all four beaches. Likewise, higher mean microplastic abundances were found in the post-cyclone period (335 items kg sediment) when compared with the pre-cyclone period (188 items kg sediment). The depositional dynamics for both macro-debris and microplastic were site-specific due to factors such as wind direction and the associated storm surge, topography and orientation of the site, and proximity to urban areas. This study has demonstrated the role cyclone induced overwash plays on introducing plastic pollution to beach environments. Considering an increase in both the intensity and frequency of cyclone in the future due to global warming, and a tremendous increase in marine plastic debris, more research effort should be spent on this understudied problem.

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