Biocrust (IMAGE) Florida Atlantic University Caption Drylands host distinct soil microbial communities, featuring biocrusts comprising cyanobacteria (blue-green algae) and fungi. Credit Vanessa Moreira C. Fernandes, Ph.D. Usage Restrictions Credit: Vanessa Moreira C. Fernandes, Ph.D. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.