Storage and export of microbial biomass across the western Greenland Ice Sheet

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10439906" target="_blank" >RIV/00216208:11310/21:10439906 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=mqmzPOT5ZM" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=mqmzPOT5ZM</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41467-021-24040-9" target="_blank" >10.1038/s41467-021-24040-9</a>

Result language
angličtina
Original language name
Storage and export of microbial biomass across the western Greenland Ice Sheet
Original language description
The Greenland Ice Sheet harbours a wealth of microbial life, yet the total biomass stored or exported from its surface to downstream environments is unconstrained. Here, we quantify microbial abundance and cellular biomass flux within the near-surface weathering crust photic zone of the western sector of the ice sheet. Using groundwater techniques, we demonstrate that interstitial water flow is slow (similar to 10(-2) m d(-1)), while flow cytometry enumeration reveals this pathway delivers 5 x 10(8) cells m(-2) d(-1) to supraglacial streams, equivalent to a carbon flux up to 250 g km(-2) d(-1). We infer that cellular carbon accumulation in the weathering crust exceeds fluvial export, promoting biomass sequestration, enhanced carbon cycling, and biological albedo reduction. We estimate that up to 37 kg km(-2) of cellular carbon is flushed from the weathering crust environment of the western Greenland Ice Sheet each summer, providing an appreciable flux to support heterotrophs and methanogenesis at the bed.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10618 - Ecology

Project
<a href="/en/project/GA19-21341S" target="_blank" >GA19-21341S: Greenland Ice Sheet surface as a model ecosystem for microbial macroecology</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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