Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor
Spatial variations in composition of marine microbial communities and its causes have largely been disclosed in studies comprising rather large environmental and spatial differences. In the present study, we explored if a moderate but temporally permanent climatic division within a contiguous arctic...
Published in: | Frontiers in Microbiology |
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Online Access: | https://doi.org/10.3389/fmicb.2015.00017 https://doaj.org/article/d18e24ffcd9a47c78146d96f1afa8ada |
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ftdoajarticles:oai:doaj.org/article:d18e24ffcd9a47c78146d96f1afa8ada 2023-05-15T14:58:31+02:00 Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor Tan Thi Nguyen Bjarne eLandfald 2015-01-01T00:00:00Z https://doi.org/10.3389/fmicb.2015.00017 https://doaj.org/article/d18e24ffcd9a47c78146d96f1afa8ada EN eng Frontiers Media S.A. http://journal.frontiersin.org/Journal/10.3389/fmicb.2015.00017/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2015.00017 https://doaj.org/article/d18e24ffcd9a47c78146d96f1afa8ada Frontiers in Microbiology, Vol 6 (2015) Archaea Bacteria sediment 16S rRNA gene sequencing beta-diversity Barents Sea Microbiology QR1-502 article 2015 ftdoajarticles https://doi.org/10.3389/fmicb.2015.00017 2022-12-30T20:49:12Z Spatial variations in composition of marine microbial communities and its causes have largely been disclosed in studies comprising rather large environmental and spatial differences. In the present study, we explored if a moderate but temporally permanent climatic division within a contiguous arctic shelf seafloor was traceable in the diversity patterns of its bacterial and archaeal communities. Soft bottom sediment samples were collected at ten geographical locations, spanning spatial distances of up to 640 km, transecting the oceanic polar front in the Barents Sea. The northern sampling sites were generally colder, less saline, shallower, and showed higher concentrations of freshly sedimented phytopigments compared to the southern study locations. Sampling sites depicted low variation in relative abundances of taxa at class level, with persistent numerical dominance by lineages of Gamma- and Deltaproteobacteria (57-66% of bacterial sequence reads). The Archaea, which constituted 0.7-1.8% of 16S rRNA gene copy numbers in the sediment, were overwhelmingly (85.8%) affiliated with the Thaumarchaeota. Beta-diversity analyses showed the environmental variations throughout the sampling range to have a stronger impact on the structuring of both the bacterial and archaeal communities than spatial effects. While bacterial communities were significantly influenced by the combined effect of several weakly selective environmental differences, including temperature, archaeal communities appeared to be more uniquely structured by the level of freshly sedimented phytopigments. Article in Journal/Newspaper Arctic Barents Sea Directory of Open Access Journals: DOAJ Articles Arctic Barents Sea Frontiers in Microbiology 6 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Archaea Bacteria sediment 16S rRNA gene sequencing beta-diversity Barents Sea Microbiology QR1-502 |
spellingShingle |
Archaea Bacteria sediment 16S rRNA gene sequencing beta-diversity Barents Sea Microbiology QR1-502 Tan Thi Nguyen Bjarne eLandfald Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor |
topic_facet |
Archaea Bacteria sediment 16S rRNA gene sequencing beta-diversity Barents Sea Microbiology QR1-502 |
description |
Spatial variations in composition of marine microbial communities and its causes have largely been disclosed in studies comprising rather large environmental and spatial differences. In the present study, we explored if a moderate but temporally permanent climatic division within a contiguous arctic shelf seafloor was traceable in the diversity patterns of its bacterial and archaeal communities. Soft bottom sediment samples were collected at ten geographical locations, spanning spatial distances of up to 640 km, transecting the oceanic polar front in the Barents Sea. The northern sampling sites were generally colder, less saline, shallower, and showed higher concentrations of freshly sedimented phytopigments compared to the southern study locations. Sampling sites depicted low variation in relative abundances of taxa at class level, with persistent numerical dominance by lineages of Gamma- and Deltaproteobacteria (57-66% of bacterial sequence reads). The Archaea, which constituted 0.7-1.8% of 16S rRNA gene copy numbers in the sediment, were overwhelmingly (85.8%) affiliated with the Thaumarchaeota. Beta-diversity analyses showed the environmental variations throughout the sampling range to have a stronger impact on the structuring of both the bacterial and archaeal communities than spatial effects. While bacterial communities were significantly influenced by the combined effect of several weakly selective environmental differences, including temperature, archaeal communities appeared to be more uniquely structured by the level of freshly sedimented phytopigments. |
format |
Article in Journal/Newspaper |
author |
Tan Thi Nguyen Bjarne eLandfald |
author_facet |
Tan Thi Nguyen Bjarne eLandfald |
author_sort |
Tan Thi Nguyen |
title |
Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor |
title_short |
Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor |
title_full |
Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor |
title_fullStr |
Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor |
title_full_unstemmed |
Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor |
title_sort |
polar front associated variation in prokaryotic community structure in arctic shelf seafloor |
publisher |
Frontiers Media S.A. |
publishDate |
2015 |
url |
https://doi.org/10.3389/fmicb.2015.00017 https://doaj.org/article/d18e24ffcd9a47c78146d96f1afa8ada |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea |
genre_facet |
Arctic Barents Sea |
op_source |
Frontiers in Microbiology, Vol 6 (2015) |
op_relation |
http://journal.frontiersin.org/Journal/10.3389/fmicb.2015.00017/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2015.00017 https://doaj.org/article/d18e24ffcd9a47c78146d96f1afa8ada |
op_doi |
https://doi.org/10.3389/fmicb.2015.00017 |
container_title |
Frontiers in Microbiology |
container_volume |
6 |
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1766330663445725184 |