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The sulphur cycle: definitions, mechanisms and dynamics.

Ciba Foundation Symposium

|January 1, 1979

Summary

This study details the sulfur cycle

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Area of Science:

Biogeochemical Cycles
Microbial Ecology

Background:

The sulfur cycle is a critical biogeochemical process.
Microbial activity drives key transformations in the sulfur cycle.

Purpose of the Study:

To describe the biochemical processes of the sulfur cycle.
To identify organisms involved in sulfur transformations.
To highlight knowledge gaps in sulfur cycle understanding.

Main Methods:

Literature review of sulfur cycle biochemistry.
Identification of microbial catalysts for sulfur oxidation and reduction.
Case studies from specialized environments.

Main Results:

Detailed description of sulfur cycle biochemical pathways.
Enumeration of microbial groups facilitating sulfur reduction and oxidation.
Identification of knowledge gaps regarding cycle scale and microbial roles in specific habitats.

Conclusions:

Microorganisms, particularly sulfate-reducing bacteria and sulfur-oxidizing chemolithotrophs, are crucial for sulfide mineral formation and recycling.
Further research is needed to fully understand the microbial roles and turnover rates in diverse environments.

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