Meltwater export of prokaryotic cells from the Greenland ice sheet

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10360622" target="_blank" >RIV/00216208:11310/17:10360622 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1111/1462-2920.13483" target="_blank" >http://dx.doi.org/10.1111/1462-2920.13483</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/1462-2920.13483" target="_blank" >10.1111/1462-2920.13483</a>

Result language
angličtina
Original language name
Meltwater export of prokaryotic cells from the Greenland ice sheet
Original language description
Microorganisms are flushed from the Greenland Ice Sheet (GrIS) where they may contribute towards the nutrient cycling and community compositions of downstream ecosystems. We investigate meltwater microbial assemblages as they exit the GrIS from a large outlet glacier, and as they enter a downstream river delta during the record melt year of 2012. Prokaryotic abundance, flux and community composition was studied, and factors affecting community structures were statistically considered. The mean concentration of cells exiting the ice sheet was 8.30 x 10(4) cells mL(-1) and we estimate that approximate to 1.02 x 10(21) cells were transported to the downstream fjord in 2012, equivalent to 30.95 Mg of carbon. Prokaryotic microbial assemblages were dominated by Proteobacteria, Bacteroidetes, and Actinobacteria. Cell concentrations and community compositions were stable throughout the sample period, and were statistically similar at both sample sites. Based on our observations, we argue that the subglacial environment is the primary source of the river-transported microbiota, and that cell export from the GrIS is dependent on discharge. We hypothesise that the release of subglacial microbiota to downstream ecosystems will increase as freshwater flux from the GrIS rises in a warming world.
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/GJ15-17346Y" target="_blank" >GJ15-17346Y: The bright future of subglacial ecosystems: Impacts of deglaciation on microbial activity and carbon cycling at glacier beds</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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