Articles | Volume 16, issue 10
https://doi.org/10.5194/tc-16-4033-2022
https://doi.org/10.5194/tc-16-4033-2022
Research article
 | 
07 Oct 2022
Research article |  | 07 Oct 2022

Variation in bacterial composition, diversity, and activity across different subglacial basal ice types

Shawn M. Doyle and Brent C. Christner

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Cited articles

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Aciego, S. M., Cuffey, K. M., Kavanaugh, J. L., Morse, D. L., and Severinghaus, J. P.: Pleistocene ice and paleo-strain rates at Taylor Glacier, Antarctica, Quaternary Res., 68, 303–313, https://doi.org/10.1016/j.yqres.2007.07.013, 2007. 
Amato, P. and Christner, B. C.: Energy Metabolism Response to Low-Temperature and Frozen Conditions in Psychrobacter cryohalolentis, Appl. Environ. Microbiol., 75, 711–718, https://doi.org/10.1128/AEM.02193-08, 2009. 
Amato, P., Doyle, S. M., Battista, J. R., and Christner, B. C.: Implications of Subzero Metabolic Activity on Long-Term Microbial Survival in Terrestrial and Extraterrestrial Permafrost, Astrobiology, 10, 789–798, https://doi.org/10.1089/ast.2010.0477, 2010. 
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Short summary
Here we examine the diversity and activity of microbes inhabiting different types of basal ice. We combine this with a meta-analysis to provide a broad overview of the specific microbial lineages enriched in a diverse range of frozen environments. Our results indicate debris-rich basal ice horizons harbor microbes that actively conduct biogeochemical cycling at subzero temperatures and reveal similarities between the microbiomes of basal ice and other permanently frozen environments.