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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 University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.ORCID iD: 0000-0002-3082-8728
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.ORCID iD: 0000-0002-9113-8915
Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Uppsala, Sweden.
Linköping Univ, Dept Themat Studies Environm Change, Linköping, Sweden.
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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
2018. Vol. 3, no 3, p. 156-167
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-357196DOI: 10.1002/lol2.10061ISI: 000456696200012OAI: oai:DiVA.org:uu-357196DiVA, id: diva2:1238444
Funder
Knut and Alice Wallenberg Foundation, KAW 2013.0091Swedish Research Council Formas, 214-2009-872; 2015-1559Swedish Research Council, 2012-00048; 201604829Swedish Nuclear Fuel and Waste Management Company, SKBEU, European Research Council, 725546Swedish Environmental Protection AgencySwedish Agency for Marine and Water ManagementSwedish Energy AgencyAvailable from: 2018-08-13 Created: 2018-08-13 Last updated: 2019-02-19Bibliographically approved

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Wallin, MarcusCampeau, AudreyKokic, JovanaSobek, SebastianTeutschbein, ClaudiaWeyhenmeyer, Gesa A.Grabs, Thomas J.
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