ArticleEnvironmental science & technology2021
Permafrost Thaw Increases Methylmercury Formation in Subarctic Fennoscandia.
Article in Environmental science & technology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Formation of Refractory Monomethylmercury Pools by Particle Adsorption.ACS ES&T water · 2026Article
- Current and projected effects of climate change in cryosphere microbial ecosystems.Nature reviews. Microbiology · 2026Review
- Production of Methylmercury in Peatlands Following Permafrost Thaw Increases along a Trophic Gradient.Environmental science & technology · 2025Article
- Environmental Impacts from Projected Permafrost Thaw in Alaska: Defining Knowledge Gaps, Data Needs, and Research Priorities.Weather, climate, and society (Print) · 2025Article
- Metal Mobilization from Thawing Permafrost Is an Emergent Risk to Water Resources.ACS ES&T water · 2025Review
- Unveiling the microbial realm with VEBA 2.0: a modular bioinformatics suite for end-to-end genome-resolved prokaryotic, (micro)eukaryotic and viral multi-omics from either short- or long-read sequencing.Nucleic acids research · 2024Article
- Unveiling the Microbial Realm with VEBA 2.0: A modular bioinformatics suite for end-to-end genome-resolved prokaryotic, (micro)eukaryotic, and viral multi-omics from either short- or long-read sequencing.bioRxiv : the preprint server for biology · 2024Article
- Thawing Permafrost Releases Industrial Contaminants into Arctic Communities.Environmental health perspectives · 2024Article
- Glacial Erosion Drives High Summer Mercury Exports from the Yukon River, Canada.Environmental science & technology letters · 2023Article
- Review
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Methylmercury (MeHg) forms in anoxic environments and can bioaccumulate and biomagnify in aquatic food webs to concentrations of concern for human and wildlife health. Mercury (Hg) pollution in the Arctic environment may worsen as these areas warm and Hg, currently locked in permafrost soils, is remobilized. One of the main concerns is the development of Hg methylation hotspots in the terrestrial environment due to thermokarst formation. The extent to which net methylation of Hg is enhanced upon thaw is, however, largely unknown. Here, we have studied the formation of Hg methylation hotspots using existing thaw gradients at five Fennoscandian permafrost peatland sites. Total Hg (HgT) and MeHg concentrations were analyzed in 178 soil samples from 14 peat cores. We observed 10 times higher concentrations of MeHg and 13 times higher %MeHg in the collapse fen (representing thawed conditions) as compared to the peat plateau (representing frozen conditions). This suggests significantly greater net methylation of Hg when thermokarst wetlands are formed. In addition, we report HgT to soil organic carbon ratios representative of Fennoscandian permafrost peatlands (median and interquartile range of 0.09 ± 0.07 μg HgT g
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