Articles | Volume 7, issue 2
https://doi.org/10.5194/soil-7-477-2021
https://doi.org/10.5194/soil-7-477-2021
Original research article
 | 
02 Aug 2021
Original research article |  | 02 Aug 2021

Whole-soil warming decreases abundance and modifies the community structure of microorganisms in the subsoil but not in surface soil

Cyrill U. Zosso, Nicholas O. E. Ofiti, Jennifer L. Soong, Emily F. Solly, Margaret S. Torn, Arnaud Huguet, Guido L. B. Wiesenberg, and Michael W. I. Schmidt

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Cited articles

Allison, S. D., Wallenstein, M. D., and Bradford, M. A.: Soil-carbon response to warming dependent on microbial physiology, Nat. Geosci., 3, 336–340, https://doi.org/10.1038/ngeo846, 2010. 
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Bai, T., Tao, J., Li, Z., Shu, M., Yan, X., Wang, P., Ye, C., Guo, H., Wang, Y., and Hu, S.: Different microbial responses in top- and sub-soils to elevated temperature and substrate addition in a semiarid grassland on the Loess Plateau, Eur. J. Soil Sci., 70, 1025–1036, https://doi.org/10.1111/ejss.12800, 2019. 
Bradford, M. A.: Thermal adaptation of decomposer communities in warming soils, Front. Microbiol., 4, 333, https://doi.org/10.3389/fmicb.2013.00333, 2013. 
Bradford, M. A., Davies, C. A., Frey, S. D., Maddox, T. R., Melillo, J. M., Mohan, J. E., Reynolds, J. F., Treseder, K. K., and Wallenstein, M. D.: Thermal adaptation of soil microbial respiration to elevated temperature, Ecol. Lett., 11, 1316–1327, https://doi.org/10.1111/j.1461-0248.2008.01251.x, 2008. 
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Short summary
How subsoil microorganisms respond to warming is largely unknown, despite their crucial role in the soil organic carbon cycle. We observed that the subsoil microbial community composition was more responsive to warming compared to the topsoil community composition. Decreased microbial abundance in subsoils, as observed in this study, might reduce the magnitude of the respiration response over time, and a shift in the microbial community will likely affect the cycling of soil organic carbon.