Small spatial variability in methane emission measured from a wet patterned boreal bog
We measured methane fluxes of a patterned bog situated in Siikaneva in southern Finland from six different plant community types in three growing seasons (2012–2014) using the static chamber method with chamber exposure of 35 min. A mixed-effects model was applied to quantify the effect of the c...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2018-03-01
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| Series: | Biogeosciences |
| Online Access: | https://www.biogeosciences.net/15/1749/2018/bg-15-1749-2018.pdf |
| _version_ | 1811304027750662144 |
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| author | A. Korrensalo E. Männistö P. Alekseychik I. Mammarella J. Rinne T. Vesala T. Vesala E.-S. Tuittila |
| author_facet | A. Korrensalo E. Männistö P. Alekseychik I. Mammarella J. Rinne T. Vesala T. Vesala E.-S. Tuittila |
| author_sort | A. Korrensalo |
| collection | DOAJ |
| description | We measured methane fluxes of a patterned bog situated in
Siikaneva in southern Finland from six different plant community types in
three growing seasons (2012–2014) using the static chamber method with
chamber exposure of 35 min. A mixed-effects model was applied to quantify
the effect of the controlling factors on the methane flux.<br><br>
The plant community types differed from each other in their water level,
species composition, total leaf area (LAI<sub>TOT</sub>) and leaf area of
aerenchymatous plant species (LAI<sub>AER</sub>). Methane emissions ranged
from −309 to 1254 mg m<sup>−2</sup> d<sup>−1</sup>. Although methane fluxes
increased with increasing peat temperature, LAI<sub>TOT</sub> and
LAI<sub>AER</sub>, they had no correlation with water table or with plant
community type. The only exception was higher fluxes from hummocks and high
lawns than from high hummocks and bare peat surfaces in 2013 and from bare
peat surfaces than from high hummocks in 2014. Chamber fluxes upscaled to
ecosystem level for the peak season were of the same magnitude as the fluxes
measured with the eddy covariance (EC) technique. In 2012 and in August 2014
there was a good agreement between the two methods; in 2013 and in July 2014,
the chamber fluxes were higher than the EC fluxes.<br><br>
Net fluxes to soil, indicating higher methane oxidation than production, were
detected every year and in all community types. Our results underline the
importance of both LAI<sub>AER</sub> and LAI<sub>TOT</sub> in controlling
methane fluxes and indicate the need for automatized chambers to reliably capture
localized events to support the more robust EC method. |
| first_indexed | 2024-04-13T07:59:45Z |
| format | Article |
| id | doaj.art-01f4f0fc935a42a9b27a4e24585bcba2 |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-04-13T07:59:45Z |
| publishDate | 2018-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-01f4f0fc935a42a9b27a4e24585bcba22022-12-22T02:55:19ZengCopernicus PublicationsBiogeosciences1726-41701726-41892018-03-01151749176110.5194/bg-15-1749-2018Small spatial variability in methane emission measured from a wet patterned boreal bogA. Korrensalo0E. Männistö1P. Alekseychik2I. Mammarella3J. Rinne4T. Vesala5T. Vesala6E.-S. Tuittila7Peatland and soil ecology research group, School of Forest Sciences, University of Eastern Finland, P.O. Box 111, 8010 Joensuu, FinlandPeatland and soil ecology research group, School of Forest Sciences, University of Eastern Finland, P.O. Box 111, 8010 Joensuu, FinlandDept. of Physics, P.O. Box 68, University of Helsinki, 00014 Helsinki, FinlandDept. of Physics, P.O. Box 68, University of Helsinki, 00014 Helsinki, FinlandDept. of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 223 62 Lund, SwedenDept. of Physics, P.O. Box 68, University of Helsinki, 00014 Helsinki, FinlandDept. of Forest Sciences, P.O. Box 27, University of Helsinki, 00014 Helsinki, FinlandPeatland and soil ecology research group, School of Forest Sciences, University of Eastern Finland, P.O. Box 111, 8010 Joensuu, FinlandWe measured methane fluxes of a patterned bog situated in Siikaneva in southern Finland from six different plant community types in three growing seasons (2012–2014) using the static chamber method with chamber exposure of 35 min. A mixed-effects model was applied to quantify the effect of the controlling factors on the methane flux.<br><br> The plant community types differed from each other in their water level, species composition, total leaf area (LAI<sub>TOT</sub>) and leaf area of aerenchymatous plant species (LAI<sub>AER</sub>). Methane emissions ranged from −309 to 1254 mg m<sup>−2</sup> d<sup>−1</sup>. Although methane fluxes increased with increasing peat temperature, LAI<sub>TOT</sub> and LAI<sub>AER</sub>, they had no correlation with water table or with plant community type. The only exception was higher fluxes from hummocks and high lawns than from high hummocks and bare peat surfaces in 2013 and from bare peat surfaces than from high hummocks in 2014. Chamber fluxes upscaled to ecosystem level for the peak season were of the same magnitude as the fluxes measured with the eddy covariance (EC) technique. In 2012 and in August 2014 there was a good agreement between the two methods; in 2013 and in July 2014, the chamber fluxes were higher than the EC fluxes.<br><br> Net fluxes to soil, indicating higher methane oxidation than production, were detected every year and in all community types. Our results underline the importance of both LAI<sub>AER</sub> and LAI<sub>TOT</sub> in controlling methane fluxes and indicate the need for automatized chambers to reliably capture localized events to support the more robust EC method.https://www.biogeosciences.net/15/1749/2018/bg-15-1749-2018.pdf |
| spellingShingle | A. Korrensalo E. Männistö P. Alekseychik I. Mammarella J. Rinne T. Vesala T. Vesala E.-S. Tuittila Small spatial variability in methane emission measured from a wet patterned boreal bog Biogeosciences |
| title | Small spatial variability in methane emission measured from a wet patterned boreal bog |
| title_full | Small spatial variability in methane emission measured from a wet patterned boreal bog |
| title_fullStr | Small spatial variability in methane emission measured from a wet patterned boreal bog |
| title_full_unstemmed | Small spatial variability in methane emission measured from a wet patterned boreal bog |
| title_short | Small spatial variability in methane emission measured from a wet patterned boreal bog |
| title_sort | small spatial variability in methane emission measured from a wet patterned boreal bog |
| url | https://www.biogeosciences.net/15/1749/2018/bg-15-1749-2018.pdf |
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