Meltwater export of prokaryotic cells from the Greenland ice sheet
Summary 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 dow...
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crwiley:10.1111/1462-2920.13483 2024-09-15T18:07:45+00:00 Meltwater export of prokaryotic cells from the Greenland ice sheet Cameron, Karen A. Stibal, Marek Hawkings, Jon R. Mikkelsen, Andreas B. Telling, Jon Kohler, Tyler J. Gözdereliler, Erkin Zarsky, Jakub D. Wadham, Jemma L. Jacobsen, Carsten S. 2016 http://dx.doi.org/10.1111/1462-2920.13483 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.13483 http://onlinelibrary.wiley.com/wol1/doi/10.1111/1462-2920.13483/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 19, issue 2, page 524-534 ISSN 1462-2912 1462-2920 journal-article 2016 crwiley https://doi.org/10.1111/1462-2920.13483 2024-08-30T04:12:48Z Summary 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 × 10 4 cells mL −1 and we estimate that ∼1.02 × 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. Article in Journal/Newspaper glacier Greenland Ice Sheet Wiley Online Library Environmental Microbiology 19 2 524 534 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Summary 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 × 10 4 cells mL −1 and we estimate that ∼1.02 × 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. |
format |
Article in Journal/Newspaper |
author |
Cameron, Karen A. Stibal, Marek Hawkings, Jon R. Mikkelsen, Andreas B. Telling, Jon Kohler, Tyler J. Gözdereliler, Erkin Zarsky, Jakub D. Wadham, Jemma L. Jacobsen, Carsten S. |
spellingShingle |
Cameron, Karen A. Stibal, Marek Hawkings, Jon R. Mikkelsen, Andreas B. Telling, Jon Kohler, Tyler J. Gözdereliler, Erkin Zarsky, Jakub D. Wadham, Jemma L. Jacobsen, Carsten S. Meltwater export of prokaryotic cells from the Greenland ice sheet |
author_facet |
Cameron, Karen A. Stibal, Marek Hawkings, Jon R. Mikkelsen, Andreas B. Telling, Jon Kohler, Tyler J. Gözdereliler, Erkin Zarsky, Jakub D. Wadham, Jemma L. Jacobsen, Carsten S. |
author_sort |
Cameron, Karen A. |
title |
Meltwater export of prokaryotic cells from the Greenland ice sheet |
title_short |
Meltwater export of prokaryotic cells from the Greenland ice sheet |
title_full |
Meltwater export of prokaryotic cells from the Greenland ice sheet |
title_fullStr |
Meltwater export of prokaryotic cells from the Greenland ice sheet |
title_full_unstemmed |
Meltwater export of prokaryotic cells from the Greenland ice sheet |
title_sort |
meltwater export of prokaryotic cells from the greenland ice sheet |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/1462-2920.13483 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.13483 http://onlinelibrary.wiley.com/wol1/doi/10.1111/1462-2920.13483/fullpdf |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_source |
Environmental Microbiology volume 19, issue 2, page 524-534 ISSN 1462-2912 1462-2920 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1462-2920.13483 |
container_title |
Environmental Microbiology |
container_volume |
19 |
container_issue |
2 |
container_start_page |
524 |
op_container_end_page |
534 |
_version_ |
1810445121214218240 |