Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers
Meltwater streams connect the glacial cryosphere with downstream ecosystems. Dissolved and particulate matter exported from glacial ecosystems originates from contrasting supraglacial and subglacial environments, and exported microbial cells have the potential to serve as ecological and hydrological...
Published in: | Frontiers in Microbiology |
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Language: | English |
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Frontiers Media S.A.
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Online Access: | https://hdl.handle.net/11250/2736563 https://doi.org/10.3389/fmicb.2020.00669 |
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fthsvestlandet:oai:hvlopen.brage.unit.no:11250/2736563 2024-03-03T08:40:10+00:00 Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers Kohler, Tyler J. Vinšová, Petra Falteisek, Lukáš Žárský, Jakub D. Yde, Jacob C. Hatton, Jade E. Hawkings, Jon R. Lamarche-Gagnon, Guillaume Hood, Eran Cameron, Karen Stibal, Marek Greenland 2020 application/pdf https://hdl.handle.net/11250/2736563 https://doi.org/10.3389/fmicb.2020.00669 eng eng Frontiers Media S.A. Kohler, T. J., Vinšová, P., Falteisek, L., Žárský, J. D., Yde, J. C., Hatton, J. E., Hawkings, J. R., Lamarche-Gagnon, G., Hood, E., Cameron, K. A., & Stibal, M. (2020). Patterns in microbial assemblages exported from the meltwater of arctic and sub-arctic glaciers. Frontiers in Microbiology, 11. urn:issn:1664-302X https://hdl.handle.net/11250/2736563 https://doi.org/10.3389/fmicb.2020.00669 cristin:1889907 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright © 2020 Kohler, Vinšová, Falteisek, Žárský, Yde, Hatton, Hawkings, Lamarche-Gagnon, Hood, Cameron and Stibal 11 Frontiers in Microbiology glacial runoff 16S rRNA gene polar stream biogeography cryosphere hydrology Peer reviewed Journal article 2020 fthsvestlandet https://doi.org/10.3389/fmicb.2020.00669 2024-02-02T12:40:34Z Meltwater streams connect the glacial cryosphere with downstream ecosystems. Dissolved and particulate matter exported from glacial ecosystems originates from contrasting supraglacial and subglacial environments, and exported microbial cells have the potential to serve as ecological and hydrological indicators for glacial ecosystem processes. Here, we compare exported microbial assemblages from the meltwater of 24 glaciers from six (sub)Arctic regions – the southwestern Greenland Ice Sheet, Qeqertarsuaq (Disko Island) in west Greenland, Iceland, Svalbard, western Norway, and southeast Alaska – differing in their lithology, catchment size, and climatic characteristics, to investigate spatial and environmental factors structuring exported meltwater assemblages. We found that 16S rRNA gene sequences of all samples were dominated by the phyla Proteobacteria, Bacteroidetes, and Actinobacteria, with Verrucomicrobia also common in Greenland localities. Clustered OTUs were largely composed of aerobic and anaerobic heterotrophs capable of degrading a wide variety of carbon substrates. A small number of OTUs dominated all assemblages, with the most abundant being from the genera Polaromonas, Methylophilus, and Nitrotoga. However, 16–32% of a region’s OTUs were unique to that region, and rare taxa revealed unique metabolic potentials and reflected differences between regions, such as the elevated relative abundances of sulfur oxidizers Sulfuricurvum sp. and Thiobacillus sp. at Svalbard sites. Meltwater alpha diversity showed a pronounced decrease with increasing latitude, and multivariate analyses of assemblages revealed significant regional clusters. Distance-based redundancy and correlation analyses further resolved associations between whole assemblages and individual OTUs with variables primarily corresponding with the sampled regions. Interestingly, some OTUs indicating specific metabolic processes were not strongly associated with corresponding meltwater characteristics (e.g., nitrification and inorganic nitrogen ... Article in Journal/Newspaper Arctic Arctic glaciers Greenland Ice Sheet Iceland Qeqertarsuaq Svalbard Alaska Høgskulen på Vestlandet: HVL Open Arctic Svalbard Greenland Norway Qeqertarsuaq ENVELOPE(-56.867,-56.867,74.400,74.400) Frontiers in Microbiology 11 |
institution |
Open Polar |
collection |
Høgskulen på Vestlandet: HVL Open |
op_collection_id |
fthsvestlandet |
language |
English |
topic |
glacial runoff 16S rRNA gene polar stream biogeography cryosphere hydrology |
spellingShingle |
glacial runoff 16S rRNA gene polar stream biogeography cryosphere hydrology Kohler, Tyler J. Vinšová, Petra Falteisek, Lukáš Žárský, Jakub D. Yde, Jacob C. Hatton, Jade E. Hawkings, Jon R. Lamarche-Gagnon, Guillaume Hood, Eran Cameron, Karen Stibal, Marek Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers |
topic_facet |
glacial runoff 16S rRNA gene polar stream biogeography cryosphere hydrology |
description |
Meltwater streams connect the glacial cryosphere with downstream ecosystems. Dissolved and particulate matter exported from glacial ecosystems originates from contrasting supraglacial and subglacial environments, and exported microbial cells have the potential to serve as ecological and hydrological indicators for glacial ecosystem processes. Here, we compare exported microbial assemblages from the meltwater of 24 glaciers from six (sub)Arctic regions – the southwestern Greenland Ice Sheet, Qeqertarsuaq (Disko Island) in west Greenland, Iceland, Svalbard, western Norway, and southeast Alaska – differing in their lithology, catchment size, and climatic characteristics, to investigate spatial and environmental factors structuring exported meltwater assemblages. We found that 16S rRNA gene sequences of all samples were dominated by the phyla Proteobacteria, Bacteroidetes, and Actinobacteria, with Verrucomicrobia also common in Greenland localities. Clustered OTUs were largely composed of aerobic and anaerobic heterotrophs capable of degrading a wide variety of carbon substrates. A small number of OTUs dominated all assemblages, with the most abundant being from the genera Polaromonas, Methylophilus, and Nitrotoga. However, 16–32% of a region’s OTUs were unique to that region, and rare taxa revealed unique metabolic potentials and reflected differences between regions, such as the elevated relative abundances of sulfur oxidizers Sulfuricurvum sp. and Thiobacillus sp. at Svalbard sites. Meltwater alpha diversity showed a pronounced decrease with increasing latitude, and multivariate analyses of assemblages revealed significant regional clusters. Distance-based redundancy and correlation analyses further resolved associations between whole assemblages and individual OTUs with variables primarily corresponding with the sampled regions. Interestingly, some OTUs indicating specific metabolic processes were not strongly associated with corresponding meltwater characteristics (e.g., nitrification and inorganic nitrogen ... |
format |
Article in Journal/Newspaper |
author |
Kohler, Tyler J. Vinšová, Petra Falteisek, Lukáš Žárský, Jakub D. Yde, Jacob C. Hatton, Jade E. Hawkings, Jon R. Lamarche-Gagnon, Guillaume Hood, Eran Cameron, Karen Stibal, Marek |
author_facet |
Kohler, Tyler J. Vinšová, Petra Falteisek, Lukáš Žárský, Jakub D. Yde, Jacob C. Hatton, Jade E. Hawkings, Jon R. Lamarche-Gagnon, Guillaume Hood, Eran Cameron, Karen Stibal, Marek |
author_sort |
Kohler, Tyler J. |
title |
Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers |
title_short |
Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers |
title_full |
Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers |
title_fullStr |
Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers |
title_full_unstemmed |
Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers |
title_sort |
patterns in microbial assemblages exported from the meltwater of arctic and sub-arctic glaciers |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2736563 https://doi.org/10.3389/fmicb.2020.00669 |
op_coverage |
Greenland |
long_lat |
ENVELOPE(-56.867,-56.867,74.400,74.400) |
geographic |
Arctic Svalbard Greenland Norway Qeqertarsuaq |
geographic_facet |
Arctic Svalbard Greenland Norway Qeqertarsuaq |
genre |
Arctic Arctic glaciers Greenland Ice Sheet Iceland Qeqertarsuaq Svalbard Alaska |
genre_facet |
Arctic Arctic glaciers Greenland Ice Sheet Iceland Qeqertarsuaq Svalbard Alaska |
op_source |
11 Frontiers in Microbiology |
op_relation |
Kohler, T. J., Vinšová, P., Falteisek, L., Žárský, J. D., Yde, J. C., Hatton, J. E., Hawkings, J. R., Lamarche-Gagnon, G., Hood, E., Cameron, K. A., & Stibal, M. (2020). Patterns in microbial assemblages exported from the meltwater of arctic and sub-arctic glaciers. Frontiers in Microbiology, 11. urn:issn:1664-302X https://hdl.handle.net/11250/2736563 https://doi.org/10.3389/fmicb.2020.00669 cristin:1889907 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright © 2020 Kohler, Vinšová, Falteisek, Žárský, Yde, Hatton, Hawkings, Lamarche-Gagnon, Hood, Cameron and Stibal |
op_doi |
https://doi.org/10.3389/fmicb.2020.00669 |
container_title |
Frontiers in Microbiology |
container_volume |
11 |
_version_ |
1792495970017083392 |