Figure 1: Seasonal abundance of Candidatus ‘M. stordalenmirensis’ along a thaw gradient.
From: Discovery of a novel methanogen prevalent in thawing permafrost
(a) Schematic of the sampling sites at Stordalen Mire, Sweden; the white area indicates permafrost, hashed area indicates the active layer and blue area indicates water. Boxes denote coring sites and coloured dots represent the sampling site and depth: intact (brown), thawing (green) and thawed (blue), and thick, thin and no borders representing deep, middle and surface, respectively. (b) Relative abundance of dominant methanogens in the bog and fen sites, compared with the total number of archaeal sequences. (c) Relative abundance of ‘M. stordalenmirensis’ in microbial communities between 2010 and 2011. Coloured dots represent sampling site and depth: intact (brown), thawing (green) and thawed (blue), and thick, thin and no borders representing deep, middle and surface, respectively. Arrow indicates the two samples used for metagenomic sequencing. Histograms indicate associated methane flux for each site averaged across the week before cores were taken (2010 and June 2011 represent a 10 year flux average7, July–October 2011 measured in situ). All error bars represent s.e.
