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Applied and Environmental Microbiology, April 2005, p. 2195-2198, Vol. 71, No. 4
0099-2240/05/$08.00+0 doi:10.1128/AEM.71.4.2195-2198.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.
Pathways for Methanogenesis and Diversity of Methanogenic Archaea in Three Boreal Peatland Ecosystems
P. E. Galand,1*
H. Fritze,2
R. Conrad,3 and
K. Yrjälä1
Department of Biological and Environmental Sciences, General Microbiology, University of Helsinki, Helsinki and,1
Finnish Forest Research Institute, Vantaa Research Centre, Vantaa, Finland,2
Max-Planck-Institut für Terrestrische Mikrobiologie, Marburg, Germany3
Received 8 July 2004/
Accepted 12 November 2004
The main objectives of this study were to uncover the pathways used for methanogenesis in three different boreal peatland ecosystems and to describe the methanogenic populations involved. The mesotrophic fen had the lowest proportion of CH4 produced from H2-CO2. The oligotrophic fen was the most hydrogenotrophic, followed by the ombrotrophic bog. Each site was characterized by a specific group of methanogenic sequences belonging to Methanosaeta spp. (mesotrophic fen), rice cluster-I (oligotrophic fen), and fen cluster (ombrotrophic bog).
* Corresponding author. Present address: Département de Biologie, Université Laval, Québec, Québec G1K 7P4, Canada. Phone: (418) 656-2131, ext. 12004. Fax: (418) 656-2043. E-mail:
pierre.galand{at}bio.ulaval.ca.
Applied and Environmental Microbiology, April 2005, p. 2195-2198, Vol. 71, No. 4
0099-2240/05/$08.00+0 doi:10.1128/AEM.71.4.2195-2198.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.
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