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 …

The “biological pump” is the process by which photosynthetically-produced organic matter in
the ocean descends from the surface layer to depth by a combination of sinking particles …

The biological carbon pump (BCP) comprises wide-ranging processes that set carbon
supply, consumption, and storage in the oceans' interior. It is becoming increasingly evident …

Although marine productivity is a key parameter in the global carbon cycle, reliable
estimation of productivity in ancient marine systems has proven difficult. In this study, we …

Quantifying the rates of biogeochemical processes in marine sediments is essential for
understanding global element cycles and climate change. Because organic matter …

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 …

Anthropogenic activities have enriched mercury in the biosphere by at least a factor of three,
leading to increases in total mercury (Hg) in the surface ocean. However, the impacts on …

Deep-sea microbial communities are exposed to high-pressure conditions, which has a
variable impact on prokaryotes depending on whether they are piezophilic (that is, pressure …

Elevated mercury (Hg) in marine and terrestrial ecosystems is a global health concern
because of the formation of toxic methylmercury. Humans have emitted Hg to the …

A fraction of the carbon captured by phytoplankton in the sunlit surface ocean sinks to depth
as dead organic matter and faecal material. The microbial breakdown of this material in the …