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Microplastics in the Amur tiger's habitat: Occurrence, characteristics, and risk assessment

Journal of Hazardous Materials 2025 3 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Zekai Huang, Dongqi Liu, Wannian Cheng, Wentao Zhang, Zhijian He, Baoxiang Huang, Shu-Hao Guo, Bowen Zhao, Yihan Wang, Yuanyuan Zhang, Guangshun Jiang

Summary

Researchers characterized microplastics in the habitat of the Amur tiger in Russia's Far East, finding MPs in soil, water, and prey organisms, and assessing the potential risk this contamination poses to one of the world's most endangered large predators.

Microplastics (MPs) are emerging environmental pollutants that pose a significant threat to wildlife within forest ecosystems. However, the quantity and types of MPs in wildlife forest habitats remain unclear. This study is the first to assess the distribution of MPs in the Amur tiger habitat of northeast China. Our results showed that MPs were detected in soil, water, atmosphere, forage plants, and ungulate and top predator feces within the forest ecosystem, respectively. The average diameter of all detected MPs was 44.99 ± 34.80μm. The predominant polymers found in the samples were polyamide, polyvinyl chloride, and polyurethane. Certain sample types shared similar MP polymer type distributions, indicating potential links in their sources and transfer pathways. Consequently, these findings provide some new insights on the new pollution problem in Amur tiger forest habitats and prompt us to consider how to control and manage the MPs pollution sources in the tiger conservation.

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