Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Biostabilization

  • Nora Noffke
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_1746-3

Synonyms

Definition

Biostabilization is fixation of sedimentary grains by biofilms and microbial mats. Three types of biostabilizations are distinguished. Type 1 biostabilization is the response by benthic microbiota to erosion. Bacterial filaments are oriented horizontally, and EPS (extracellular polymeric substances, if present) change their chemical structure to a more erosion-resistant phase. Biostabilization by epibenthic and endobenthic microbial mats is expressed by
$$ \varTheta =\rho {u}_{*}^2/\left({\rho}_{\mathrm{s}}-{\rho}_{\mathrm{f}}\right)\mathrm{g}{D}^{\mathrm{n}} $$

Keywords

Bioorganic Chemistry Sedimentary Surface Extracellular Polymeric Substance Polymeric Substance Shear Velocity 
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-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Department of Ocean, Earth & Atmospheric SciencesOld Dominion UniversityNorfolkUSA