Our Old Woman Creek Wetlands team has a new publication out revealing that much of the methane in this wetland appears to come from a novel methanogen residing in surface, oxygenated soils. Congratulations and thanks to the Wrighton and Bohrer labs, who led this work.
Angle, J.C., Morin, T.H., Solden, L.M., Narrowe, A.B., Smith, G.J., Borton, M.A., Rey-Sanchez, C., Daly, R.A., Mirfenderesgi, G., Hoyt, D.W., Riley, W.J., Miller, C.S., Bohrer, G. & Wrighton, K.C., 2017. Methanogenesis in oxygenated soils is a substantial fraction of wetland methane emissions. Nature Communications, 8(1), p.1567.
Figure 2 explains why this archaea is called Candidatus Methanothrix paradoxum. This paper is the whole enchilada: genomics, transcriptomics, extensive in situ methane measurements, emissions modeling, 16S and biogeography.