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Landscape-scale patterns of sediment sulfur accumulation in Swedish lakes
Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
2008 (English)In: Journal of Paleolimnology, Vol. 39, 61-70 p.Article in journal (Refereed) Published
Abstract [en]

Sulfur has played a central role in the acidification of many lakes in Scandinavia and other regions. As part of the research into sulfur cycling, numerous studies have analyzed the sediment record in order to develop insights into past in-lake cycling of sulfur, particularly in the context of reconstructing past deposition rates. Although many of these studies have shown that it is not easy to interpret the sediment record in terms of past sulfur deposition rates, analyses of sulfur in sediment still provide valuable information on the response of lakes to anthropogenic sulfur deposition. Here, we have analyzed sulfur in top and bottom samples from short surface cores (25-35 cm, representing >= 250 years) as well as bulk cores from similar to 110 lakes located throughout Sweden, which were collected during 1986, as well as in more-detailed profiles from six lakes. The lakes with the highest surface sediment concentrations (9-24 mg S g(-1) dry mass) and the highest calculated inventories of 'excess' sulfur (20-180 g S m(-2)) are found in southern Sweden and around one industrial area along the northeastern coast where sulfur deposition rates and lake-water concentrations have been highest. For many lakes in the central and northern inland region it is common that the sediment cores exhibit either no enrichment or even a decline in sulfur concentrations in near-surface sediments, which we suggest was the pre-pollution norm for lakes. Although interpreting sulfur sediment profiles is problematic for reconstructing deposition, a more-comprehensive spatial sampling approach shows that there is a good geographic agreement between sulfur deposition, lake-water chemistry and sediment sulfur accumulation.

Place, publisher, year, edition, pages
2008. Vol. 39, 61-70 p.
Identifiers
URN: urn:nbn:se:umu:diva-11463DOI: doi:10.1007/s10933-007-9095-0OAI: oai:DiVA.org:umu-11463DiVA: diva2:151134
Available from: 2009-01-09 Created: 2009-01-09 Last updated: 2011-01-10Bibliographically approved

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Renberg, Ingemar

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf