Articles | Volume 22, issue 24
https://doi.org/10.5194/bg-22-8077-2025
https://doi.org/10.5194/bg-22-8077-2025
Research article
 | 
19 Dec 2025
Research article |  | 19 Dec 2025

Depth-dependent loss of microbiome diversity and Firmicutes compositional shift induced by ureolytic biostimulation in Aridisols

Kesem Abramov, Svetlana Gelfer, Michael Tsesarsky, and Hadas Raveh-Amit

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Cited articles

Belnap, J.: Nitrogen fixation in biological soil crusts from southeast Utah, USA, Biol. Fertil. Soils, 35, 128–135, https://doi.org/10.1007/s00374-002-0452-x, 2002. 
Belnap, J. and Eldridge, D.: Disturbance and Recovery of Biological Soil Crusts, in: Biological Soil Crusts: Structure, Function, and Management, 363–383, https://doi.org/10.1007/978-3-642-56475-8_27, 2001. 
Belnap, J. and Lange, O. L.: Biological soil crusts: structure, function, and management, Ecological Studies, vol. 150, Springer-Verlag, Berlin, Heidelberg, ISBN 3-540-43757-6, 2003. 
Barnard, R. L., Osborne, C. A., and Firestone, M. K.: Responses of soil bacterial and fungal communities to extreme desiccation and rewetting, ISME Journal, 7, 2229–2241, https://doi.org/10.1038/ismej.2013.104, 2013. 
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Microbial-induced calcite precipitation (MICP) is considered an environmentally conscious technology for soil amelioration. We study the response of microbiomes to MICP stimulation in arid soils from different sites and depths. We show that different soil depths host distinct microbiomes, and that biostimulation selects for specific taxa while suppressing others. The study provides evidence for the effectiveness of biostimulation, yet shows that it comes with a cost for biodiversity.  
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