The Cryosphere
The Cryosphere
TC
Articles | Volume 17, issue 7
Articles | Volume 17, issue 7
https://doi.org/10.5194/tc-17-2993-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-2993-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 7
Research article
 | 
21 Jul 2023
Research article |  | 21 Jul 2023

Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel

Ashley J. Dubnick, Rachel L. Spietz, Brad D. Danielson, Mark L. Skidmore, Eric S. Boyd, Dave Burgess, Charvanaa Dhoonmoon, and Martin Sharp

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Short summary
At the end of an Arctic winter, we found ponded water 500 m under a glacier. We explored the chemistry and microbiology of this unique, dark, and cold aquatic habitat to better understand ecology beneath glaciers. The water was occupied by cold-loving and cold-tolerant microbes with versatile metabolisms and broad habitat ranges and was depleted in compounds commonly used by microbes. These results show that microbes can become established beneath glaciers and deplete nutrients within months.
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