Articles | Volume 19, issue 17
https://doi.org/10.5194/bg-19-4331-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-4331-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Sep 2022
Research article |
| 14 Sep 2022
| 14 Sep 2022
Spatial and temporal variation in δ13C values of methane emitted from a hemiboreal mire: methanogenesis, methanotrophy, and hysteresis
Department of Physical Geography and Ecosystem
Science, Lund University, Lund, Sweden
Production Systems Unit, Natural Resources Institute Finland,
Helsinki, Finland
Patryk Łakomiec
Department of Physical Geography and Ecosystem
Science, Lund University, Lund, Sweden
Patrik Vestin
Department of Physical Geography and Ecosystem
Science, Lund University, Lund, Sweden
Joel D. White
Department of Physical Geography and Ecosystem
Science, Lund University, Lund, Sweden
Per Weslien
Department of Earth Sciences, University of Gothenburg, Gothenburg,
Sweden
Julia Kelly
Centre for Environmental and Climate Science, Lund University, Lund,
Sweden
Natascha Kljun
Centre for Environmental and Climate Science, Lund University, Lund,
Sweden
Lena Ström
Department of Physical Geography and Ecosystem
Science, Lund University, Lund, Sweden
Leif Klemedtsson
Department of Earth Sciences, University of Gothenburg, Gothenburg,
Sweden
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sapfluxnetrwill facilitate new data syntheses on the ecological factors driving water use and drought responses of trees and forests.
Paul C. Stoy, Adam A. Cook, John E. Dore, Natascha Kljun, William Kleindl, E. N. Jack Brookshire, and Tobias Gerken
Biogeosciences, 18, 961–975, https://doi.org/10.5194/bg-18-961-2021, https://doi.org/10.5194/bg-18-961-2021, 2021
Short summary
Short summary
The reintroduction of American bison creates multiple environmental benefits. Ruminants like bison also emit methane – a potent greenhouse gas – to the atmosphere, which has not been measured to date in a field setting. We measured methane efflux from an American bison herd during winter using eddy covariance. Automated cameras were used to approximate their location to calculate per-animal flux. From the measurements, bison do not emit more methane than the cattle they often replace.
Roger Seco, Thomas Holst, Mikkel Sillesen Matzen, Andreas Westergaard-Nielsen, Tao Li, Tihomir Simin, Joachim Jansen, Patrick Crill, Thomas Friborg, Janne Rinne, and Riikka Rinnan
Atmos. Chem. Phys., 20, 13399–13416, https://doi.org/10.5194/acp-20-13399-2020, https://doi.org/10.5194/acp-20-13399-2020, 2020
Short summary
Short summary
Northern ecosystems exchange climate-relevant trace gases with the atmosphere, including volatile organic compounds (VOCs). We measured VOC fluxes from a subarctic permafrost-free fen and its adjacent lake in northern Sweden. The graminoid-dominated fen emitted mainly isoprene during the peak of the growing season, with a pronounced response to increasing temperatures stronger than assumed by biogenic emission models. The lake was a sink of acetone and acetaldehyde during both periods measured.
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Short summary
The study uses the stable isotope 13C of carbon in methane to investigate the origins of spatial and temporal variation in methane emitted by a temperate wetland ecosystem. The results indicate that methane production is more important for spatial variation than methane consumption by micro-organisms. Temporal variation on a seasonal timescale is most likely affected by more than one driver simultaneously.
The study uses the stable isotope 13C of carbon in methane to investigate the origins of spatial...
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