Potential N2 fixation by sulfate-reducing bacteria in a marine intertidal microbial mat

By T. Steppe, Hans W. Paerl. 2002

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Occurrence of benthic microbial nitrogen fixation coupled to sulfate reduction in the seasonally hypoxic Eckernförde Bay, Baltic Sea (2012, methodology): “…have the genetic potential to fix N (Zehr et al., 1995) and have been shown to do so in a variety of benthic habitats (e.g. Nielsen et al., 2001; Steppe and Paerl, 2002; Bertics et al., 2010) it is possible that these organisms could facilitate the biological fixation of N2 in sediments beneath…”
Burrowing deeper into benthic nitrogen cycling: the impact of bioturbation on nitrogen fixation coupled to sulfate reduction (2010, background): “Specifically, other studies of coastal sediments have also found that SRB account for various levels of total benthic N2 fixation, especially in those areas with high organic matter loading (Gandy & Yoch 1988, Welsh et al. 1996a,b, Nielsen et al. 2001, Burns et al. 2002, Steppe & Paerl 2002).”
Nitrogenase gene diversity and microbial community structure: a cross-system comparison. (2003, background): “Steppe and Paerl (2002) investigated the involvement of sulphate reducers in nitrogen fixation in marine sediments and provided evidence for nifH gene expression.”