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Flooded Soils

  1. Ralf Conrad,
  2. Peter Frenzel

Published Online: 15 APR 2003

DOI: 10.1002/047126363X.agr344

Encyclopedia of Agrochemicals

Encyclopedia of Agrochemicals

How to Cite

Conrad, R. and Frenzel, P. 2003. Flooded Soils. Encyclopedia of Agrochemicals. .

Author Information

  1. Max-Planck-Institut für Terrestrische Mikrobiologie, Marburg, Germany

Publication History

  1. Published Online: 15 APR 2003

Abstract

The microbiology of flooded soils is characterized by a large functional diversity that is seen in the numerous microbial phenotypes that occur in this ecosystem. This functional diversity is mainly due to the many different ecological niches created by gradients between oxic-anoxic and substrate-rich—substrate-poor zones in the soil. These gradients are created by the limitation of the O2 transport from the atmosphere into the soil because of slow diffusion and microbial respiration and by the deposition of organic matter into the soil by root exudation and decay of plant debris.

Keywords:

  • flooded soil;
  • ecosystem;
  • root exudation;
  • aerobes;
  • isotope effects;
  • iron cycling;
  • sulfur cycling;
  • nitrogen cycling;
  • rhizosphere;
  • oxidants