Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic)
Microbial communities promptly respond to the environmental perturbations, especially in the Arctic and sub-Arctic systems that are highly impacted by climate change, and fluctuations in the diversity level of microbial assemblages could give insights on their expected response. 16S rRNA gene amplic...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/321443 2024-09-15T17:50:01+00:00 Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic) Papale, Maria Rappazzo, Alessandro Ciro Mikkonen, Anu Rizzo, Carmen Moscheo, Federica Conte, Antonella Michaud, Luigi Lo Giudice, Angelina 2020-11-12T14:13:48Z application/pdf http://hdl.handle.net/10138/321443 eng eng Multidisciplinary Digital Publishing Institute Papale, M.; Rappazzo, A.C.; Mikkonen, A.; Rizzo, C.; Moscheo, F.; Conte, A.; Michaud, L.; Lo Giudice, A. Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic). Water 2020, 12, 3098. http://hdl.handle.net/10138/321443 http://purl.org/eprint/entityType/JournalArticle http://purl.org/eprint/entityType/Expression 2020 ftunivhelsihelda 2024-07-04T04:52:39Z Microbial communities promptly respond to the environmental perturbations, especially in the Arctic and sub-Arctic systems that are highly impacted by climate change, and fluctuations in the diversity level of microbial assemblages could give insights on their expected response. 16S rRNA gene amplicon sequencing was applied to describe the bacterial community composition in water and sediment through the sub-Arctic Pasvik River. Our results showed that river water and sediment harbored distinct communities in terms of diversity and composition at genus level. The distribution of the bacterial communities was mainly affected by both salinity and temperature in sediment samples, and by oxygen in water samples. Glacial meltwaters and runoff waters from melting ice probably influenced the composition of the bacterial community at upper and middle river sites. Interestingly, marine-derived bacteria consistently accounted for a small proportion of the total sequences and were also more prominent in the inner part of the river. Results evidenced that particular conditions occurring at sampling sites (such as algal blooms, heavy metal contamination and anaerobiosis) may select species at local scale from a shared bacterial pool, thus favoring certain bacterial taxa. Conversely, the few phylotypes specifically detected in some sites are probably due to localized external inputs introducing allochthonous microbial groups. Article in Journal/Newspaper Arctic Climate change Pasvik HELDA – University of Helsinki Open Repository |
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Open Polar |
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HELDA – University of Helsinki Open Repository |
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ftunivhelsihelda |
language |
English |
description |
Microbial communities promptly respond to the environmental perturbations, especially in the Arctic and sub-Arctic systems that are highly impacted by climate change, and fluctuations in the diversity level of microbial assemblages could give insights on their expected response. 16S rRNA gene amplicon sequencing was applied to describe the bacterial community composition in water and sediment through the sub-Arctic Pasvik River. Our results showed that river water and sediment harbored distinct communities in terms of diversity and composition at genus level. The distribution of the bacterial communities was mainly affected by both salinity and temperature in sediment samples, and by oxygen in water samples. Glacial meltwaters and runoff waters from melting ice probably influenced the composition of the bacterial community at upper and middle river sites. Interestingly, marine-derived bacteria consistently accounted for a small proportion of the total sequences and were also more prominent in the inner part of the river. Results evidenced that particular conditions occurring at sampling sites (such as algal blooms, heavy metal contamination and anaerobiosis) may select species at local scale from a shared bacterial pool, thus favoring certain bacterial taxa. Conversely, the few phylotypes specifically detected in some sites are probably due to localized external inputs introducing allochthonous microbial groups. |
format |
Article in Journal/Newspaper |
author |
Papale, Maria Rappazzo, Alessandro Ciro Mikkonen, Anu Rizzo, Carmen Moscheo, Federica Conte, Antonella Michaud, Luigi Lo Giudice, Angelina |
spellingShingle |
Papale, Maria Rappazzo, Alessandro Ciro Mikkonen, Anu Rizzo, Carmen Moscheo, Federica Conte, Antonella Michaud, Luigi Lo Giudice, Angelina Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic) |
author_facet |
Papale, Maria Rappazzo, Alessandro Ciro Mikkonen, Anu Rizzo, Carmen Moscheo, Federica Conte, Antonella Michaud, Luigi Lo Giudice, Angelina |
author_sort |
Papale, Maria |
title |
Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic) |
title_short |
Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic) |
title_full |
Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic) |
title_fullStr |
Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic) |
title_full_unstemmed |
Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic) |
title_sort |
bacterial diversity in a dynamic and extreme sub-arctic watercourse (pasvik river, norwegian arctic) |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
http://hdl.handle.net/10138/321443 |
genre |
Arctic Climate change Pasvik |
genre_facet |
Arctic Climate change Pasvik |
op_relation |
Papale, M.; Rappazzo, A.C.; Mikkonen, A.; Rizzo, C.; Moscheo, F.; Conte, A.; Michaud, L.; Lo Giudice, A. Bacterial Diversity in a Dynamic and Extreme Sub-Arctic Watercourse (Pasvik River, Norwegian Arctic). Water 2020, 12, 3098. http://hdl.handle.net/10138/321443 |
_version_ |
1810291856906387456 |