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Microbial Biogeochemistry

  • Christopher S. Cronan
Chapter
Part of the Springer Textbooks in Earth Sciences, Geography and Environment book series (STEGE)

Abstract

The biogeochemical cycles of carbon, nitrogen, and sulfur are characterized by important gaseous pathways, biochemical transformations, immobilization processes, and mineralization reactions associated with microbial metabolism. Microbial organisms are thus important regulators of the source-sink behavior and cycling rates of these key elements in terrestrial and aquatic ecosystems. In addition, numerous other elements such as mercury, iron, and even phosphorus are affected directly or indirectly by microbial exudation, respiration, assimilation, oxidation-reduction, methylation, and acidification processes. Taken as a whole, microscopic bacteria and fungi have critical roles in controlling element cycles in the biosphere. The primary focus of this chapter is to explore the major microbial processes and associated environmental conditions influencing the biogeochemical behavior of nitrogen, sulfur, and carbon in the forest landscape.

Keywords

Controlling Element Cycles Dissimilatory Nitrate Reduction To Ammonium (DNRA) Microbial Nitrogen Transformations Gaseous Nitrogen Species Final Oxidation State 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Christopher S. Cronan
    • 1
  1. 1.School of Biology and EcologyUniversity of MaineOronoUSA

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