Methane-oxidizing bacteria are the only terrestrial sink for atmospheric methane. Little is known, however, about the methane-oxidizing bacteria that are responsible for the consumption of atmospheric methane, or about the factors that influence their activity and diversity in soil. Effects of fire and its end-product, wood ash, on the activity and community of methane oxidizing bacteria were studied in boreal forest 3 months and 12 years after the treatments. Fire significantly increased the atmospheric CH 4 oxidation rate. Both fire and wood ash treatments resulted in increased soil pH, but there was no correlation with methane oxidation rates. Changes in the methane-oxidizing bacterial community due to treatments were not detected by cultivation-independent recovery and comparative sequence analysis of pmoA gene products from soil. Phylogenetic analysis showed that a majority of the pmoA sequences obtained belonged to the "upland soil cluster α", which has previously been detected in diverse forest environments. © 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
Jaatinen, K., Knief, C., Dunfield, P. F., Yrjälä, K., & Fritze, H. (2004). Methanotrophic bacteria in boreal forest soil after fire. FEMS Microbiology Ecology, 50(3), 195–202. https://doi.org/10.1016/j.femsec.2004.06.013