Microbial nitrite oxidation is the primary pathway that generates nitrate in wastewater
treatment systems and can be performed by a variety of microbes: namely, nitrite-oxidizing …

Chemosynthesis is a metabolic process that transfers carbon to the biosphere using
reduced compounds. It is well recognised that chemosynthesis occurs in much of the ocean …

Nitrogen (N2) fixation in oligotrophic surface waters is the main source of new nitrogen to the
ocean and has a key role in fuelling the biological carbon pump. Oceanic N2 fixation has …

The microbial community composition and biogeochemical dynamics of coastal permeable
(sand) sediments differs from cohesive (mud) sediments. Tide-and wave-driven …

Background Ferromanganese nodule-bearing deep-sea sediments cover vast areas of the
ocean floor, representing a distinctive habitat in the abyss. These sediments harbor unique …

Dysoxic marine waters (DMW,< 1 μM oxygen) are currently expanding in volume in the
oceans, which has biogeochemical, ecological and societal consequences on a global …

Nitrospirales, including the genus Nitrospira, are environmentally widespread
chemolithoautotrophic nitrite-oxidizing bacteria. These mostly uncultured microorganisms …

Ammonia-oxidising archaea of the phylum Thaumarchaeota are important organisms in the
nitrogen cycle, but the mechanisms driving their radiation into diverse ecosystems remain …

Paddy fields are one of the most important sources of nitrous oxide (N2O), but
biogeochemical N2O production mechanisms in the soil profile remain unclear. Our study …

Nitrite-oxidizing bacteria of the genus Nitrospira are key players of the biogeochemical
nitrogen cycle. However, little is known about their occurrence and survival strategies in …