uu.seUppsala universitets publikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Molecular composition of organic matter controls methylmercury formation in boreal lakes
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Limnologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
Umea Univ, Dept Chem, SE-90187 Umea, Sweden..
Umea Univ, Dept Ecol & Environm Sci, SE-90187 Umea, Sweden..
Umea Univ, Dept Chem, SE-90187 Umea, Sweden..
Vise andre og tillknytning
2017 (engelsk)Inngår i: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 8, artikkel-id 14255Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A detailed understanding of the formation of the potent neurotoxic methylmercury is needed to explain the large observed variability in methylmercury levels in aquatic systems. While it is known that organic matter interacts strongly with mercury, the role of organic matter composition in the formation of methylmercury in aquatic systems remains poorly understood. Here we show that phytoplankton-derived organic compounds enhance mercury methylation rates in boreal lake sediments through an overall increase of bacterial activity. Accordingly, in situ mercury methylation defines methylmercury levels in lake sediments strongly influenced by planktonic blooms. In contrast, sediments dominated by terrigenous organic matter inputs have far lower methylation rates but higher concentrations of methylmercury, suggesting that methylmercury was formed in the catchment and imported into lakes. Our findings demonstrate that the origin and molecular composition of organic matter are critical parameters to understand and predict methylmercury formation and accumulation in boreal lake sediments.

sted, utgiver, år, opplag, sider
2017. Vol. 8, artikkel-id 14255
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-316930DOI: 10.1038/ncomms14255ISI: 000393586600001PubMedID: 28181492OAI: oai:DiVA.org:uu-316930DiVA, id: diva2:1079687
Forskningsfinansiär
Swedish Research Council, 2011-7192 2012-3892 2013-6978The Kempe Foundations, SMK-2745 SMK-2840Swedish Research Council Formas, 2012-986Tilgjengelig fra: 2017-03-09 Laget: 2017-03-09 Sist oppdatert: 2018-01-13bibliografisk kontrollert

Open Access i DiVA

fulltext(776 kB)139 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 776 kBChecksum SHA-512
9f47243ed2068d1b4561b0909765a314d85ed30e9dc4c16ac5b80bf6fb9c01c012b1a4365e68a12a7d0025e08eeb7821f21c3a458e3ea0e58be9b781da3545ea
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekstPubMed

Personposter BETA

Bravo, Andrea G.Bertilsson, Stefan

Søk i DiVA

Av forfatter/redaktør
Bravo, Andrea G.Bertilsson, Stefan
Av organisasjonen
I samme tidsskrift
Nature Communications

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 139 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
pubmed
urn-nbn

Altmetric

doi
pubmed
urn-nbn
Totalt: 495 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf