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Carbon dioxide and methane emissions of Swedish low-order streams-a national estimate and lessons learnt from more than a decade of observations
Uppsala Univ, Sweden.
Uppsala Univ, Sweden.
Swedish Univ Agr Sci, Sweden.
Linköping University, Department of Thematic Studies, Tema Environmental Change. Linköping University, Faculty of Arts and Sciences.ORCID iD: 0000-0003-0038-2152
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2018 (English)In: LIMNOLOGY AND OCEANOGRAPHY LETTERS, ISSN 2378-2242, Vol. 3, no 3, p. 156-167Article in journal (Refereed) Published
Abstract [en]

Low-order streams are suggested to dominate the atmospheric CO2 source of all inland waters. Yet, many large-scale stream estimates suffer from methods not designed for gas emission determination and rarely include other greenhouse gases such as CH4. Here, we present a compilation of directly measured CO2 and CH4 concentration data from Swedish low-order streams (> 1600 observations across > 500 streams) covering large climatological and land-use gradients. These data were combined with an empirically derived gas transfer model and the characteristics of a ca. 400,000 km stream network covering the entire country. The total stream CO2 and CH4 emission corresponded to 2.7 Tg C yr(-1) (95% confidence interval: 2.0-3.7) of which the CH4 accounted for 0.7% (0.02 Tg C yr(-1)). The study highlights the importance of low-order streams, as well as the critical need to better represent variability in emissions and stream areal extent to constrain future stream C emission estimates.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. Vol. 3, no 3, p. 156-167
National Category
Oceanography, Hydrology and Water Resources
Identifiers
URN: urn:nbn:se:liu:diva-163975DOI: 10.1002/lol2.10061ISI: 000456696200012OAI: oai:DiVA.org:liu-163975DiVA, id: diva2:1412314
Note

Funding Agencies|Knut and Alice Wallenberg foundationKnut & Alice Wallenberg Foundation [KAW 2013.0091]; Swedish research council FORMASSwedish Research CouncilSwedish Research Council Formas [214-2009-872]; Swedish research council VRSwedish Research Council [2012-00048, 201604829]; SKB; ERCEuropean Research Council (ERC) [725546]; Carlsberg FoundationCarlsberg Foundation; FORMASSwedish Research Council Formas [2015-1559]; Swedish Research Council (VR)Swedish Research Council; Swedish Environmental Protection Agency; Swedish Agency for Marine and Water Management; Swedish Energy AgencySwedish Energy Agency

Available from: 2020-03-05 Created: 2020-03-05 Last updated: 2020-03-27Bibliographically approved

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