Change search
CiteExportLink to record
Permanent link

Direct link
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
Humic surface waters of frozen peat bogs (permafrost zone) are highly resistant to bio- and photodegradation
Show others and affiliations
2019 (English)In: Biogeosciences, ISSN 1726-4170, E-ISSN 1726-4189, Vol. 16, no 12, p. 2511-2526Article in journal (Refereed) Published
Abstract [en]

In contrast to the large number of studies on humic waters from permafrost-free regions and oligotrophic waters from permafrost-bearing regions, the bio- and photolability of DOM from the humic surface waters of permafrost-bearing regions has not been thoroughly evaluated. Following standardized protocol, we measured biodegradation (at low, intermediate and high temperatures) and photodegradation (at one intermediate temperature) of DOM in surface waters along the hydrological continuum (depression -> stream -> thermokarst lake -> Pechora River) within a frozen peatland in European Russia. In all systems, within the experimental resolution of 5% to 10 %, there was no bio- or photodegradation of DOM over a 1-month incubation period. It is possible that the main cause of the lack of degradation is the dominance of allochthonous refractory (soil, peat) DOM in all waters studied. However, all surface waters were supersaturated with CO2. Thus, this study suggests that, rather than bio- and photodegradation of DOM in the water column, other factors such as peat pore-water DOM processing and respiration of sediments are the main drivers of elevated pCO(2) and CO2 emission in humic boreal waters of frozen peat bogs.

Place, publisher, year, edition, pages
Nicolaus Copernicus University Press, 2019. Vol. 16, no 12, p. 2511-2526
National Category
Environmental Sciences Ecology
Identifiers
URN: urn:nbn:se:umu:diva-161711DOI: 10.5194/bg-16-2511-2019ISI: 000473225700001OAI: oai:DiVA.org:umu-161711DiVA, id: diva2:1340392
Funder
Swedish Research Council, 325-2014-6898Available from: 2019-08-05 Created: 2019-08-05 Last updated: 2019-08-05Bibliographically approved

Open Access in DiVA

fulltext(6268 kB)40 downloads
File information
File name FULLTEXT01.pdfFile size 6268 kBChecksum SHA-512
8d5e276238fa3715e652d2c9aaea55130d5afd67cf849349db0c6c439c618600e8121e7e18278043e70a39bae5b806ce49fefc99766fca0d918a0d589c4cae1f
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Karlsson, Jan
By organisation
Department of Ecology and Environmental Sciences
In the same journal
Biogeosciences
Environmental SciencesEcology

Search outside of DiVA

GoogleGoogle Scholar
Total: 40 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: 98 hits
CiteExportLink to record
Permanent link

Direct link
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