Diversity and Assembling Processes of Bacterial Communities in Cryoconite Holes of a Karakoram Glacier
Cryoconite holes are small ponds that form on the surface of glaciers that contain a dark debris, the cryoconite, at the bottom and host active ecological communities. Differences in the structure of bacterial communities have been documented among Arctic and mountain glaciers, and among glaciers in...
Published in: | Microbial Ecology |
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Format: | Article in Journal/Newspaper |
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Online Access: | http://hdl.handle.net/2434/465201 https://doi.org/10.1007/s00248-016-0914-6 |
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ftunivmilanoair:oai:air.unimi.it:2434/465201 2024-02-11T10:01:23+01:00 Diversity and Assembling Processes of Bacterial Communities in Cryoconite Holes of a Karakoram Glacier AMBROSINI, ROBERTO MINORA, UMBERTO FILIPPO R.S. Azzoni G. Diolaiuti C. Smiraglia F. Musitelli F. Navarra I. Tagliaferri I. Gandolfi G. Bestetti C. Mayer A. Franzetti R. Ambrosini F. Musitelli F. Navarra I. Tagliaferri I. Gandolfi G. Bestetti C. Mayer U.F. Minora R.S. Azzoni G. Diolaiuti C. Smiraglia A. Franzetti 2016-12-21 http://hdl.handle.net/2434/465201 https://doi.org/10.1007/s00248-016-0914-6 eng eng Springer info:eu-repo/semantics/altIdentifier/pmid/27999874 info:eu-repo/semantics/altIdentifier/wos/WOS:000401565700007 journal:MICROBIAL ECOLOGY http://hdl.handle.net/2434/465201 doi:10.1007/s00248-016-0914-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85008247458 info:eu-repo/semantics/closedAccess Bacterial communitie Baltoro glacier Cryoconite Cryosphere Dispersal Settore BIO/19 - Microbiologia Generale Settore GEO/04 - Geografia Fisica e Geomorfologia info:eu-repo/semantics/article 2016 ftunivmilanoair https://doi.org/10.1007/s00248-016-0914-6 2024-01-16T23:27:11Z Cryoconite holes are small ponds that form on the surface of glaciers that contain a dark debris, the cryoconite, at the bottom and host active ecological communities. Differences in the structure of bacterial communities have been documented among Arctic and mountain glaciers, and among glaciers in different areas of the world. In this study, we investigated the structure of bacterial communities of cryoconite holes of Baltoro Glacier, a large (62 km in length and 524 km2 of surface) glacier of the Karakoram, by high-throughput sequencing of the V5-V6 hypervariable regions of the 16S rRNA gene. We found that Betaproteobacteria dominated bacterial communities, with large abundance of genera Polaromonas, probably thanks to its highly versatile metabolism, and Limnohabitans, which may have been favoured by the presence of supraglacial lakes in the area where cryoconite holes were sampled. Variation in bacterial communities among different sampling areas of the glacier could be explained by divergent selective processes driven by variation in environmental conditions, particularly pH, which was the only environmental variable that significantly affected the structure of bacterial communities. This variability may be due to both temporal and spatial patterns of variation in environmental conditions. Article in Journal/Newspaper Arctic The University of Milan: Archivio Istituzionale della Ricerca (AIR) Arctic Microbial Ecology 73 4 827 837 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
Bacterial communitie Baltoro glacier Cryoconite Cryosphere Dispersal Settore BIO/19 - Microbiologia Generale Settore GEO/04 - Geografia Fisica e Geomorfologia |
spellingShingle |
Bacterial communitie Baltoro glacier Cryoconite Cryosphere Dispersal Settore BIO/19 - Microbiologia Generale Settore GEO/04 - Geografia Fisica e Geomorfologia AMBROSINI, ROBERTO MINORA, UMBERTO FILIPPO R.S. Azzoni G. Diolaiuti C. Smiraglia F. Musitelli F. Navarra I. Tagliaferri I. Gandolfi G. Bestetti C. Mayer A. Franzetti Diversity and Assembling Processes of Bacterial Communities in Cryoconite Holes of a Karakoram Glacier |
topic_facet |
Bacterial communitie Baltoro glacier Cryoconite Cryosphere Dispersal Settore BIO/19 - Microbiologia Generale Settore GEO/04 - Geografia Fisica e Geomorfologia |
description |
Cryoconite holes are small ponds that form on the surface of glaciers that contain a dark debris, the cryoconite, at the bottom and host active ecological communities. Differences in the structure of bacterial communities have been documented among Arctic and mountain glaciers, and among glaciers in different areas of the world. In this study, we investigated the structure of bacterial communities of cryoconite holes of Baltoro Glacier, a large (62 km in length and 524 km2 of surface) glacier of the Karakoram, by high-throughput sequencing of the V5-V6 hypervariable regions of the 16S rRNA gene. We found that Betaproteobacteria dominated bacterial communities, with large abundance of genera Polaromonas, probably thanks to its highly versatile metabolism, and Limnohabitans, which may have been favoured by the presence of supraglacial lakes in the area where cryoconite holes were sampled. Variation in bacterial communities among different sampling areas of the glacier could be explained by divergent selective processes driven by variation in environmental conditions, particularly pH, which was the only environmental variable that significantly affected the structure of bacterial communities. This variability may be due to both temporal and spatial patterns of variation in environmental conditions. |
author2 |
R. Ambrosini F. Musitelli F. Navarra I. Tagliaferri I. Gandolfi G. Bestetti C. Mayer U.F. Minora R.S. Azzoni G. Diolaiuti C. Smiraglia A. Franzetti |
format |
Article in Journal/Newspaper |
author |
AMBROSINI, ROBERTO MINORA, UMBERTO FILIPPO R.S. Azzoni G. Diolaiuti C. Smiraglia F. Musitelli F. Navarra I. Tagliaferri I. Gandolfi G. Bestetti C. Mayer A. Franzetti |
author_facet |
AMBROSINI, ROBERTO MINORA, UMBERTO FILIPPO R.S. Azzoni G. Diolaiuti C. Smiraglia F. Musitelli F. Navarra I. Tagliaferri I. Gandolfi G. Bestetti C. Mayer A. Franzetti |
author_sort |
AMBROSINI, ROBERTO |
title |
Diversity and Assembling Processes of Bacterial Communities in Cryoconite Holes of a Karakoram Glacier |
title_short |
Diversity and Assembling Processes of Bacterial Communities in Cryoconite Holes of a Karakoram Glacier |
title_full |
Diversity and Assembling Processes of Bacterial Communities in Cryoconite Holes of a Karakoram Glacier |
title_fullStr |
Diversity and Assembling Processes of Bacterial Communities in Cryoconite Holes of a Karakoram Glacier |
title_full_unstemmed |
Diversity and Assembling Processes of Bacterial Communities in Cryoconite Holes of a Karakoram Glacier |
title_sort |
diversity and assembling processes of bacterial communities in cryoconite holes of a karakoram glacier |
publisher |
Springer |
publishDate |
2016 |
url |
http://hdl.handle.net/2434/465201 https://doi.org/10.1007/s00248-016-0914-6 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/27999874 info:eu-repo/semantics/altIdentifier/wos/WOS:000401565700007 journal:MICROBIAL ECOLOGY http://hdl.handle.net/2434/465201 doi:10.1007/s00248-016-0914-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85008247458 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s00248-016-0914-6 |
container_title |
Microbial Ecology |
container_volume |
73 |
container_issue |
4 |
container_start_page |
827 |
op_container_end_page |
837 |
_version_ |
1790597199405514752 |