Encyclopedia of Astrobiology

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


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



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
$$ \varTheta =\rho {u}_{*}^2/\left({\rho}_{\mathrm{s}}-{\rho}_{\mathrm{f}}\right)\mathrm{g}{D}^{\mathrm{n}} $$


Bioorganic Chemistry Sedimentary Surface Extracellular Polymeric Substance Polymeric Substance Shear Velocity 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

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