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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
Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Department of Thematic Studies – Environmental Change, Linköping University, Linköping, Sweden.
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2018 (English)In: Limnology and Oceanography: Letters, ISSN 2378-2242, no SIArticle in journal (Refereed) Epub ahead of print
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 trans- fer 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 yr21 (95% confidence interval: 2.0–3.7) of which the CH4 accounted for 0.7% (0.02 Tg C yr21). 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. no SI
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Environmental Sciences
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URN: urn:nbn:se:uu:diva-337636DOI: 10.1002/lol2.10061OAI: oai:DiVA.org:uu-337636DiVA, id: diva2:1170423
Available from: 2018-01-03 Created: 2018-01-03 Last updated: 2018-05-21Bibliographically approved

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

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