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Effect of bioturbation of the mitten crab on distribution of tire wear particles and their combined effect on sediment ecosystem

Chemosphere 2023 13 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Yang Liu, Yang Liu, Xianliang Yi, Yang Liu, Yang Liu, Xianliang Yi, Xiaoming Ni, Xiaoming Ni, Xianliang Yi, Xianliang Yi, Huiyan Tong, Huiyan Tong, Huiyan Tong, Huiyan Tong, Xiaoming Ni, Xiaoming Ni, Jinbo Song, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Xianliang Yi, Yang Liu, Xianliang Yi, Yang Liu, Xianliang Yi, Hao Zhou Yang Liu, Yang Liu, Yang Liu, Hao Zhou Yang Liu, Yang Liu, Yang Liu, Hao Zhou Yang Liu, Hao Zhou Hao Zhou Jinbo Song, Xianliang Yi, Xianliang Yi, Jingjing Zhan, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Yang Liu, Hao Zhou Dongliang Lu, Yang Liu, Xiaoming Ni, Yang Liu, Huiyan Tong, Huiyan Tong, Xianliang Yi, Hao Zhou Xiaoming Ni, Hao Zhou Hao Zhou Jingjing Zhan, Jingjing Zhan, Xianliang Yi, Xiaoming Ni, Xianliang Yi, Yang Liu, Hao Zhou Xiaoming Ni, Hao Zhou Xiaoming Ni, Yang Liu, Jingjing Zhan, Xiaoming Ni, Yang Liu, Xianliang Yi, Hao Zhou Jinbo Song, Jingjing Zhan, Yang Liu, Jinbo Song, Dongliang Lu, Hao Zhou Xianliang Yi, Yang Liu, Yang Liu, Jingjing Zhan, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Yang Liu, Yang Liu, Yang Liu, Jingjing Zhan, Jingjing Zhan, Jingjing Zhan, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Hao Zhou Jingjing Zhan, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Hao Zhou

Summary

Researchers found that tire wear particles (TWPs) inhibit burrowing activity in Chinese mitten crabs and that crab bioturbation redistributes TWPs into burrow walls, concentrating heavy metal additives like zinc there while also suppressing sediment microbial diversity and nutrient cycling functions.

Tire wear particles (TWPs) are a major source of environmental microplastic pollution which gradually settle and accumulate in sediments after entering the aquatic environment, which can affect the behaviors of benthic organisms. Bioturbation of benthic species could affect the fate, impacts and potential risks of TWPs by altering the properties and structure of sediments. Therefore, in this study, the effect of TWPs on the burrowing activity of Chinese mitten crab (Eriocheir sinensis) was investigated. In addition, the effects of crab bioturbation on the distribution of TWPs and their additives were studied. The combined effects of TWPs and crab bioturbation on the microbial communities in the sediments were also explored. The results of this study showed that both TWPs and the leachate significantly inhibited the burrowing activity of crabs. TWPs in the surface layer of sediments were re-distributed by crab bioturbation and enriched mainly in the sediments near the burrow walls. Meanwhile, the heavy metals (i.e., Zn, Ca, Mg, Ba and Al) used as additives during the tire production in the burrow walls significantly increased as the accumulation of TWPs near burrow walls. In this study, TWP exposure decreased the bacterial diversity and abundance, as well as the functional genes related to carbon and nitrogen cycling process, but crab bioturbation increased them in the sediments of burrow walls by constructing a unique habitat. However, after TWPs entering into burrows, they were significantly decreased in the sediments near the burrow walls like the effects of TWPs, suggesting the negative effects of TWPs could play a dominant role in this combined system. Overall, this study is important for evaluating the distribution and effects of TWP pollution in the sediment ecosystem under biological factors such as bioturbation.

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