sulphur cycle

sulphur cycle

the collection of biological processes through which sulphur circulates in the biosphere, from its uptake as sulphates by plants from the soil, its assimilation into the plants and animals, through its release back into the soil and the atmosphere as a result of the degradation of organic matter by bacterial action.
References in periodicals archive ?
Steudler PA, Peterson BJ (1984) Contribution of gaseous sulphur from salt marshes to the global sulphur cycle.
The main primary producers were anaerobic phototrophic bacteria and, as happens in the Ciso pool, during much of the year, the sulphate-reducing bacteria closed the sulphur cycle.
However, the new findings also mean that the atmospheric sulphur cycle is more complicated than we thought," says Hakan Svedhem, ESA's Venus Express Project Scientist.