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Integrating carbon emissions from lakes and streams in a subarctic catchment
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2013 (English)In: Journal of Geophysical Research - Biogeosciences, ISSN 2169-8953, E-ISSN 2169-8961, Vol. 118, no 3, p. 1200-1207Article in journal (Refereed) Published
Abstract [en]

Northern inland waters emit CO2 and CH4 to the atmosphere but the importance of these emissions is poorly understood due to a lack of integrated catchment-scale estimates of carbon (C) emissions from lakes and streams. In this study we quantified the annual emission of CO2 and CH4 from 27 lakes and 23 stream segments in a 15 km2 subarctic catchment in northern Sweden. All lakes and streams were net sources of C to the atmosphere on an annual basis. Streams dominated (96%) the aquatic CO2 emission while lakes (61%) dominated the aquatic CH4 emission. Total aquatic C emission from the catchment was estimated to be 9.1 g C m−2 yr−1 (98% as CO2). Although streams only accounted for 4% of the aquatic area in the catchment, they accounted for 95% of the total emission. The C emissions from lakes and streams were considerably larger than previously reported downstream waterborne export of C from the catchment, indicating that the atmospheric losses of C in the aquatic systems are an important component in the catchment C balance.

Place, publisher, year, edition, pages
2013. Vol. 118, no 3, p. 1200-1207
Keywords [en]
Biosphere/atmosphere interactions, Carbon cycling, Biogeochemical cycles, processes, and modeling, Limnology, Groundwater transport, subarctic, streams, lakes, CO2, CH4, emission
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Natural Sciences
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URN: urn:nbn:se:polar:diva-4239DOI: 10.1002/jgrg.20092OAI: oai:DiVA.org:polar-4239DiVA, id: diva2:1179205
Available from: 2018-01-31 Created: 2018-01-31 Last updated: 2018-01-31

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Publisher's full texthttp://dx.doi.org/10.1002/jgrg.20092
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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  • text
  • asciidoc
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