The oceanic carbon cycle has traditionally been viewed as a reversible, one step reduction–
oxidation reaction (CO2⇌ CH2O). Principle pathways were thought to involve eukaryotic …

The oxidation of the global ocean by cyanobacterial oxygenic photosynthesis, about 2,100
Myr ago, is presumed to have limited anoxygenic bacterial photosynthesis to oceanic …

A key question when trying to understand the global carbon cycle is whether the oceans are
net sources or sinks of carbon. This will depend on the production of organic matter relative …

The oceans have absorbed nearly half of the fossil-fuel carbon dioxide (CO2) emitted into
the atmosphere since pre-industrial times, causing a measurable reduction in seawater pH …

Rates of oxygen utilization (OUR) at depth in the ocean have been interpreted as showing
that rates of carbon fixation by phytoplankton, as estimated by 14CO2 assimilation in vitro …

Photosynthesis in the surface ocean produces approximately 100 gigatonnes of organic
carbon per year, of which 5 to 15 per cent is exported to the deep ocean,. The rate at which …

THE Black Sea is the world's largest anoxic basin; it is also a contemporary analogue of the
environment in which carbonaceous shales and petroleum source beds formed1. Recently …

The oceanic carbon cycle is mainly determined by the combined activities of bacteria and
phytoplankton,, but the interdependence of climate, the carbon cycle and the microbes is not …

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THE contribution of anoxygenic photosynthesis to carbon cycling in the Black Sea, the
world's largest body of anoxic marine water, has been vigorously investigated and debated …