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Tier 2
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Original research — experimental, observational, or case-control study. Direct primary evidence.
Environmental Sources
Marine & Wildlife
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Characteristics and spatiotemporal distribution of microplastics in sediments from a typical mariculture pond area in Qingduizi Bay, North Yellow Sea, China
Marine Pollution Bulletin2022
28 citations
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Score: 40
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Researchers characterized the abundance, morphology, and spatiotemporal distribution of microplastics in sediments from mariculture ponds and offshore areas of Qingduizi Bay in northern China across winter and summer. Mariculture pond sediments had notably higher microplastic concentrations than offshore areas, with transparent polyethylene terephthalate fibres dominating.
Microplastics (MPs) in mariculture environments may have an impact on mariculture and ecosystems. This study sampled the sediments in mariculture ponds and offshore areas in Qingduizi Bay during winter and summer. The abundance, characteristics, spatiotemporal distribution and pollution risk of microplastics were analyzed. The results showed that the abundance of MPs in the mariculture pond and offshore area was 49.2 ± 35.9 items·kg d.w. and 17.1 ± 9.9 items·kg d.w.; the MPs were mainly composed of transparent fibers of thickness 2000-5000 μm, with the main polymers being polyethylene terephthalate (PET) and cellophane (CP). The spatial distribution showed a downward trend from the inside to the outside, but the difference was not significant when comparing different seasons. The pollution load index (PLI) risk assessment showed that all sampling sites were at Hazard Level I. This study can provide valuable information for the risk assessment of microplastic pollution in mariculture areas.