Almost the entire seafloor is covered with sediments that can be more than 10 000 m thick
and represent a vast microbial ecosystem that is a major component of Earth's element and …

Sulfate/sulfite-reducing microorganisms (SRM) are ubiquitous in nature, driving the global
sulfur cycle. A hallmark of SRM is the dissimilatory sulfite reductase encoded by the genes …

Sedimentary organic matter provides carbon substrates and energy sources for
microorganisms, which drive benthic biogeochemical processes and in turn modify the …

Sulfur-based autotrophic denitrification (SAD) coupled with anammox is a promising process
for autotrophic nitrogen removal in view of the stable nitrite accumulation during SAD. In this …

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 …

Bacterial and archaeal communities inhabiting the subsurface seabed live under strong
energy limitation and have growth rates that are orders of magnitude slower than laboratory …

Hadal trench bottom (> 6000 m below sea level) sediments harbor higher microbial cell
abundance compared with adjacent abyssal plain sediments. This is supported by the …

Deep-ocean regions beyond the reach of sunlight contain an estimated 615 Pg of dissolved
organic matter (DOM), much of which persists for thousands of years. It is thought that …

Profound biogeochemical responses of anoxic sediments to the fluctuation of dissolved
oxygen (DO) concentration in overlaying water are often observed, despite oxygen having a …

Microorganisms play an important role in the biogeochemical cycles of lacustrine sediments.
However, little is known about their vertical responses to sedimentary depths and their …