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Articles | Volume 12, issue 15
Articles | Volume 12, issue 15
https://doi.org/10.5194/bg-12-4595-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/bg-12-4595-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 12, issue 15
Research article
 | 
04 Aug 2015
Research article |  | 04 Aug 2015

Geographic and seasonal variation of dissolved methane and aerobic methane oxidation in Alaskan lakes

K. Martinez-Cruz, A. Sepulveda-Jauregui, K. Walter Anthony, and F. Thalasso

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Short summary
We assessed the importance of aerobic CH4 oxidation in Alaskan lakes. We conducted field measurement of dissolved CH4 and O2 together with determination of the CH4 oxidation rate. We found that during winter, CH4 oxidation was limited by O2 concentration and during summer, by CH4 concentration. In addition to seasonal variations, the type of permafrost on which the lakes were located was identified as a key factor, indicating that landscape processes play an important role in lake CH4 cycling.
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Freshwater ecosystems in changing permafrost landscapes
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