Encyclopedia of Geobiology

2011 Edition
| Editors: Joachim Reitner, Volker Thiel

Anaerobic Transformation Processes, Microbiology

  • Bernhard Schink
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-9212-1_143

Definition and Introduction

Microbial activities in geochemical processes are most often redox reactions, either between organic matter and inorganic compounds or between different inorganic compounds. In surface soils and lake sediments, organic matter typically derives from primary production by land plants or aquatic plants including algae, provided either directly or after primary digestion by animals. Underground soils and groundwater may receive major amounts of comparably stable organic matter, most often petroleum and its derivatives, through spills and accidents. Microbial oxidation helps to eliminate such contaminants, with concomitant reduction of inorganic electron acceptors. The surprising abundance of bacteria-like structures and even living bacteria in Deep Sea sediments and terrestrial rock material down to several 100 m below surface raised the question of how microbial life can be fuelled in the apparent absence of perceptible external substrate input. The present...

Keywords

Manganese Oxide Ferric Oxide Banded Iron Formation Oxygenic Photosynthesis Humic Compound 
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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Notes

Acknowledgment

The author thanks Dr. Heike Freese, Konstanz, for helping with the design of Figure 1. Experimental work in the author’s lab was supported by Deutsche Forschungsgemeinschaft, Bonn, Fonds der Chemischen Industrie, Frankfurt/M., and research funds of Universität Konstanz.

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Bernhard Schink
    • 1
  1. 1.Department of BiologyUniversity of KonstanzKonstanzGermany