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Occurrence Characteristics and Ecological Risk Assessment of Microplastics in Zooplankton Communities in Jiaozhou Bay, China

2026
Shan Zheng, Yaqi Wang, Xiaoxia Sun, Yongfang Zhao, Junhua Liang, Mingliang Zhu

Summary

Scientists found tiny plastic pieces inside small sea creatures called zooplankton in a Chinese bay, with higher amounts during warmer months. Since zooplankton are eaten by fish that humans consume, this plastic pollution could potentially work its way up the food chain to our dinner plates. This study helps us understand how widespread plastic pollution has become in marine life that connects to our food supply.

To investigate the occurrence characteristics and ecological risks of microplastics in zooplankton communities of Jiaozhou Bay, a seasonal survey on the abundance and characteristics of microplastics in zooplankton communities was conducted in February, May, August, and November. The results showed that the median number of microplastics per individual zooplankton was 0.25 MP/ind., and the median abundance of microplastics within zooplankton was 2.70 MPs/m³, ranging from 0 to 62.38 MPs/m³. The abundances in May and August were significantly higher than those in February and November (P

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