Clamworm bioturbation reduces mercury methylation through alteration of methylator composition in sediment.

• Tác giả: Junhao Fang, Ke Pan, Wen-Xiong Wang, Xun Wang, Bingxin Yin
• Ngôn ngữ: eng
• Thông tin xuất bản: England : Environmental pollution (Barking, Essex : 1987) , 2025
• Bộ sưu tập: NCBI
• ID: 739392

Tóm tắt

Coastal sediment has been recognized as a hotspot of mercury (Hg) methylation and acts as an important reservoir for Hg-methylating microbes. The bioturbation behaviors of benthic organisms can significantly influence sediment properties and potentially affect the mobility and availability of contaminants within the sediment. However, the effects of bioturbation on Hg speciation and disposition in sediment have not been well addressed. This study investigated the influence of clamworm activities on the Hg-methylation process and the composition of methylators in sediment. The results showed that the presence of clamworms greatly suppressed the growth of Hg-methylators and led to a significant decrease in the production rate of methylmercury (MeHg) (from 0.61 to 0.36 ng g