uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
In-Lake Processes Offset Increased Terrestrial Inputs of Dissolved Organic Carbon and Color to Lakes
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Limnology.
Show others and affiliations
2013 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 8, no 8, e70598- p.Article in journal (Refereed) Published
Abstract [en]

Increased color in surface waters, or browning, can alter lake ecological function, lake thermal stratification and pose difficulties for drinking water treatment. Mechanisms suggested to cause browning include increased dissolved organic carbon (DOC) and iron concentrations, as well as a shift to more colored DOC. While browning of surface waters is widespread and well documented, little is known about why some lakes resist it. Here, we present a comprehensive study of Malaren, the third largest lake in Sweden. In Malaren, the vast majority of water and DOC enters a western lake basin, and after approximately 2.8 years, drains from an eastern basin. Despite 40 years of increased terrestrial inputs of colored substances to western lake basins, the eastern basin has resisted browning over this time period. Here we find the half-life of iron was far shorter (0.6 years) than colored organic matter (A(420); 1.7 years) and DOC as a whole (6.1 years). We found changes in filtered iron concentrations relate strongly to the observed loss of color in the western basins. In addition, we observed a substantial shift from colored DOC of terrestrial origin, to less colored autochthonous sources, with a substantial decrease in aromaticity (-17%) across the lake. We suggest that rapid losses of iron and colored DOC caused the limited browning observed in eastern lake basins. Across a wider dataset of 69 Swedish lakes, we observed greatest browning in acidic lakes with shorter retention times (< 1.5 years). These findings suggest that water residence time, along with iron, pH and colored DOC may be of central importance when modeling and projecting changes in brownification on broader spatial scales.

Place, publisher, year, edition, pages
2013. Vol. 8, no 8, e70598- p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-208088DOI: 10.1371/journal.pone.0070598ISI: 000323378000008OAI: oai:DiVA.org:uu-208088DiVA: diva2:650801
Available from: 2013-09-23 Created: 2013-09-23 Last updated: 2017-12-06Bibliographically approved

Open Access in DiVA

fulltext(1163 kB)176 downloads
File information
File name FULLTEXT01.pdfFile size 1163 kBChecksum SHA-512
2698d65a7d74e2efa279ddf3a40911fd999dfc1d8c783a4ca20ac7f5d8655d0fd331cdef12305633d38f8b3fbdceb61085984f4fff23a41c4a685c04561c6b92
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Authority records BETA

Kothawala, DollyTranvik, Lars

Search in DiVA

By author/editor
Kothawala, DollyTranvik, Lars
By organisation
Limnology
In the same journal
PLoS ONE
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 176 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 432 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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