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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 23
Biogeosciences, 14, 5403–5424, 2017
https://doi.org/10.5194/bg-14-5403-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Biological soil crusts and their role in biogeochemical processes...

Biogeosciences, 14, 5403–5424, 2017
https://doi.org/10.5194/bg-14-5403-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 01 Dec 2017

Research article | 01 Dec 2017

Hydration status and diurnal trophic interactions shape microbial community function in desert biocrusts

Minsu Kim and Dani Or
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Cited articles  
Abed, R. M., Al Kharusi, S., Schramm, A., and Robinson, M. D.: Bacterial diversity, pigments and nitrogen fixation of biological desert crusts from the Sultanate of Oman, FEMS Microbiol. Ecol., 72, 418–428, 2010.
Abed, R. M., Lam, P., De Beer, D., and Stief, P.: High rates of denitrification and nitrous oxide emission in arid biological soil crusts from the Sultanate of Oman, ISME J., 7, 1862–1875, 2013.
Abed, R. M., Polerecky, L., Al-Habsi, A., Oetjen, J., Strous, M., and de Beer, D.: Rapid recovery of cyanobacterial pigments in desiccated biological soil crusts following addition of water, PLoS ONE, 9, e112372, https://doi.org/10.1371/journal.pone.0112372, 2014.
Araujo, P. G., Gras, A., and Ginovart, M.: MbT-Tool: An open-access tool based on Thermodynamic Electron Equivalents Model to obtain microbial-metabolic reactions to be used in biotechnological process, Computational and Structural Biotechnology Journal, 14, 325–332, 2016.
Barger, N. N., Herrick, J. E., Van Zee, J., and Belnap, J.: Impacts of biological soil crust disturbance and composition on C and N loss from water erosion, Biogeochemistry, 77, 247–263, 2006.
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We report a mechanistic model for linking biophysical and chemical processes in Cyanobacterial crusts comprised of trophically interacting photoautotrophs, aerobic and anaerobic heterotrophs, and nitrifiers. The biocrust model captures salient aspects of microbial activity and community organisation in response to diurnal cycles of light and temperature. The framework offers new mechanistic insights into a host of highly dynamic and spatially resolved processes shaping biogeochemical fluxes.
We report a mechanistic model for linking biophysical and chemical processes in Cyanobacterial...
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