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Shifts in mercury m...
Shifts in mercury methylation across a peatland chronosequence : From sulfate reduction to methanogenesis and syntrophy
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- Hu, Haiyan (författare)
- Uppsala universitet,Limnologi,Science for Life Laboratory, SciLifeLab,Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China
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- Wang, Baolin (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment
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- Bravo, Andrea G. (författare)
- CSIC, ICM, Dept Marine Biol & Oceanog, Pg Maritim Barceloneta 37-49, E-08003 Barcelona, Catalunya, Spain
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- Björn, Erik (författare)
- Umeå universitet,Kemiska institutionen,Umea Univ, Dept Chem, SE-90187 Umea, Sweden
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- Skyllberg, Ulf (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management
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- Amouroux, David (författare)
- Univ Pau & Pays Adour, CNRS, UMR5254, Inst Sci Analyt & Physicochim Environm & Mat Mira, F-64000 Pau, France
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- Tessier, Emmanuel (författare)
- Univ Pau & Pays Adour, CNRS, UMR5254, Inst Sci Analyt & Physicochim Environm & Mat Mira, F-64000 Pau, France
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- Zopfi, Jakob (författare)
- Univ Basel, Dept Environm Sci, Biogeochem, CH-4056 Basel, Switzerland
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- Feng, Xinbin (författare)
- Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China
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- Bishop, Kevin (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment
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- Nilsson, Mats (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management
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- Bertilsson, Stefan (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Uppsala universitet,Limnologi,Science for Life Laboratory, SciLifeLab,Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, SE-75007 Uppsala, Sweden,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment,Uppsala University
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(creator_code:org_t)
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- Elsevier, 2020
- 2020
- Engelska.
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Ingår i: Journal of Hazardous Materials. - : Elsevier. - 0304-3894 .- 1873-3336. ; 387
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Abstract
Ämnesord
Stäng
- Peatlands are globally important ecosystems where inorganic mercury is converted to bioaccumulating and highly toxic methylmercury, resulting in high risks of methylmercury exposure in adjacent aquatic ecosystems. Although biological mercury methylation has been known for decades, there is still a lack of knowledge about the organisms involved in mercury methylation and the drivers controlling their methylating capacity. In order to investigate the metabolisms responsible for mercury methylation and methylmercury degradation as well as the controls of both processes, we studied a chronosequence of boreal peatlands covering fundamentally different biogeochemical conditions. Potential mercury methylation rates decreased with peatland age, being up to 53 times higher in the youngest peatland compared to the oldest. Methylation in young mires was driven by sulfate reduction, while methanogenic and syntrophic metabolisms became more important in older systems. Demethylation rates were also highest in young wetlands, with a gradual shift from biotic to abiotic methylmercury degradation along the chronosequence. Our findings reveal how metabolic shifts drive mercury methylation and its ratio to demethylation as peatlands age.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Skogsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Forest Science (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- Mercury
- Methylation
- Demethylation
- Peatland
- Chronosequence
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Hu, Haiyan
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Wang, Baolin
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Bravo, Andrea G.
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Björn, Erik
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Skyllberg, Ulf
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Amouroux, David
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visa fler...
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Tessier, Emmanue ...
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Zopfi, Jakob
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Feng, Xinbin
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Bishop, Kevin
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Nilsson, Mats
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Bertilsson, Stef ...
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visa färre...
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- LANTBRUKSVETENSKAPER
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och Lantbruksvetensk ...
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och Skogsvetenskap
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NATURVETENSKAP
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och Geovetenskap och ...
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och Miljövetenskap
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Journal of Hazar ...
- Av lärosätet
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Umeå universitet
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Uppsala universitet
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Sveriges Lantbruksuniversitet