Microbial dissimilatory sulfate reduction to sulfide is a predominant terminal pathway of
organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the …

The seabed plays a key role in the marine carbon cycle as a) the terminal location of aerobic
oxidation of organic matter, b) the greatest anaerobic bioreactor, and c) the greatest …

Uncovers the Key Role Microbes Play in the Transformation of Oxidizable and Reducible
MineralsMany areas of geomicrobial processes are receiving serious attention from …

The availability of fixed inorganic nitrogen (nitrate, nitrite and ammonium) limits primary
productivity in many oceanic regions. The conversion of nitrate to N2 by heterotrophic …

Benthic O2 availability regulates many important biogeochemical processes and has crucial
implications for the biology and ecology of benthic communities. Further, the benthic O2 …

Some bacteria are capable of extracellular electron transfer, thereby enabling them to use
electron acceptors and donors without direct cell contact,,,. Beyond the micrometre scale …

Denitrification is a critical process that can alleviate the effects of excessive nitrogen
availability in aquatic ecosystems subject to eutrophication. An important part of …

Lakes are important sources of greenhouse gases (GHGs) to the atmosphere. Factors
controlling CO 2, CH 4 and N 2 O fluxes include eutrophication and warming, but the …

Reviews of the sulfur cycle from a biogeochemical or microbiological perspective have
recently been presented, eg by Amend et al.(2004) and Canfield et al.(2005). The latter …

Fixed nitrogen limits primary productivity in many parts of the global ocean, and it
consequently plays a role in controlling the carbon dioxide content of the atmosphere. The …