Nutrient and energy flows through soil microbial biomass
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The recognition and recent studies of the role of living organisms (biomass) in carbon, nitrogen and phosphorus flows in nature have stressed the role of the microorganisms as sources and sinks for nutrients, in addition to their traditional role in transformation of the nutrient elements. Techniques for determining the size and activity of laboratory cultures have had to be altered for field measurements. Similarly, growth concepts developed using liquid culture studies should be applicable in the field after the effects of such factors as competition, the presence of inhibitors, physical ...