liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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
Measurement of methane oxidation in lakes: A comparison of methods
Linköping University, Department of Thematic Studies, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
Linköping University, Department of Thematic Studies, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
Department of Limnology, Uppsala University, Uppsala, Sweden.
2002 (English)In: Environmental Science & Technology, ISSN 0013-936X, Vol. 36, no 15, 3354-3361 p.Article in journal (Refereed) Published
Abstract [en]

Methane oxidation in lakes constrains the methane emissions to the atmosphere and simultaneously enables the transfer of methane carbon to pelagic food webs, Several different methods have been used to estimate methane oxidation, but these methods have not previously been compared. In this study, we present methane oxidation estimates from three different lakes during summer and winter, using methods based on the transformation of added (CH4)-C-14, the fractionation of natural methane C-13, and the mass balance modeling of concentration gradients, All methods yielded similar results, including similar differences between lakes and seasons. Average methane oxidation rates varied from 0.25 to 81 mg of C m(-2) d(-1) and indicate that the three methods are comparable, although they to some extent take different processes into account. Critical issues as well as drawbacks and advantages with the used methods are thoroughly discussed. We conclude that methods using the stable isotope or mass balance modeling approach represent promising alternatives, particularly for studies focusing on ecosystem-scale carbon metabolism.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2002. Vol. 36, no 15, 3354-3361 p.
National Category
Physical Geography
Identifiers
URN: urn:nbn:se:liu:diva-28226DOI: 10.1021/es010311pISI: 000177242600043Scopus ID: 2-s2.0-0036667658OAI: oai:DiVA.org:liu-28226DiVA: diva2:248978
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2017-02-09Bibliographically approved
In thesis
1. Anoxic degradation of organic matter in lakes: implications for carbon cycling and aquatic food webs
Open this publication in new window or tab >>Anoxic degradation of organic matter in lakes: implications for carbon cycling and aquatic food webs
2002 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Considerable evidence from laboratory studies and marine environments suggests that degradation of organic matter (OM) is restricted under anoxic conditions compared to when molecular oxygen (O2) is present. However, other studies contradict this view since they found similar OM degradation rates and bacterial growth rates under both oxic and anoxic conditions in aquatic environments. Studies from freshwater environments are rare, and have been primarily based on bacterial production estimates. Anoxic degradation of OM in lakes is commonly considered to be slow and of little importance for overall lake food webs compared to oxic degradation. The present thesis and the work it is based on challenge this view. First, the performance of a commonly used method to measure bacterial production was tested in both oxic and anoxic lake water. Then, the oxic and anoxic potentials of bacterial growth and OM mineralization were compared in lake water and sediment. In addition, I assessed the potential of carbon transfer from methane (CH4; i.e. an end-product of anoxic degradation) to pelagic food webs. Three methods for measuring water column methane oxidation were evaluated. Then, the potential transport of methane carbon into the microbial community via methane oxidation, and further -up the food web- into the zooplankton community was estimated. Results indicate 1) that OM degradation and bacterial growth may be similar in oxic and anoxic lake environments, 2) that OM characteristics may be more important for the mineralization than the O2 regime per se in the short term (daysweeks), and 3) that methane can be a significant source of carbon and energy for pelagic food webs. This suggests that the anoxic carbon metabolism may be extensive and potentially important for pelagic organisms in many lakes.

Place, publisher, year, edition, pages
Linköping: Linköpings universitet, 2002. 55 p.
Series
Linköping Studies in Arts and Science, ISSN 0282-9800 ; 262
Keyword
Ekonsystem i vatten
National Category
Social Sciences Interdisciplinary
Identifiers
urn:nbn:se:liu:diva-29575 (URN)14951 (Local ID)91-7373-436-5 (ISBN)14951 (Archive number)14951 (OAI)
Public defence
2002-11-01, Sal Elysion, Hus-T, Universitetsområdet Valla, Linköping, 10:00 (Swedish)
Opponent
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2014-08-29Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Bastviken, DavidEjlertsson, Jörgen

Search in DiVA

By author/editor
Bastviken, DavidEjlertsson, Jörgen
By organisation
Department of Water and Environmental StudiesFaculty of Arts and Sciences
Physical Geography

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 653 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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