Microbiotic crusts, or cryptogamic crusts as they have often been called, are arid land soil crusts consolidated by a combination of cyanobacteria, eukaryotic algae, fungi, lichens, and bryophytes.  This site is a research site with background material on microbiotic crusts, descriptions of our study sites, and a growing set of species descriptions and illustrations.  The work upon which the website is based has been funded by the National Science Foundation.

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Site Layout:

  • Background

  • Summary

  • Sites:   Alphabetical list of sites along with a description and map of area.

  • Soil Chemistry

  • Species list (includes description and photo)
                 - blue-green algae (Cyanobacteria)
                 - green algae (Chlorophyta)
                 - diatoms (Bacillariophyta)
                 - yellow-green algae (Xanthophyta)
                 - eustigmatophytes (Eustigmatophyta)

  • Bryophytes


This site is maintained by AJ Kennedy:  aj_kennedy@yahoo.com
The site was originally designed and created by Marianne Kingsley
Ongoing management and oversight is provided by Jeff Johansen