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 …

Organic carbon in marine sediments is a critical component of the global carbon cycle, and
its degradation influences a wide range of phenomena, including the magnitude of carbon …

The depth of oxygen penetration into marine sediments differs considerably from one region
to another,. In areas with high rates of microbial respiration, O2 penetrates only millimetres …

The rock-hosted subseafloor crustal aquifer harbors a reservoir of microbial life that may
influence global marine biogeochemical cycles. Here we utilized metagenomic libraries of …

Evidence for low pO2 and a ferruginous ocean characterize the mid‐Proterozoic (1.8–0.8
Ga). Considerations of redox sources and sinks imply that generation of O2 via organic …

Subseafloor microbial activities are central to Earth's biogeochemical cycles. They control
Earth's surface oxidation and major aspects of ocean chemistry. They affect climate on long …

Marine dissolved organic carbon (DOC) is one of the largest active reservoirs of reduced
carbon on Earth. In the deep ocean, DOC has been described as biologically recalcitrant …

Oil pollution has been a worldwide concern especially in environments where treatment is
quite difficult to apply. Marine polluted sediments, in particular, constitute one of the most …

Marine dissolved organic matter (DOM) is a large (660 Pg) pool of reduced carbon that is
subject to thermal alteration in hydrothermal systems and sedimentary basins. In natural …

The recent recognition of fungi in the oceanic igneous crust challenges the understanding of
this environment as being exclusively prokaryotic and forces reconsiderations of the ecology …