Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: Evidence of dispersal limitation in the Bransfield Strait
The Southern Ocean constitutes about 10% of the global oceans' volume and is characterized by high primary production. Particulate organic matter (POM) is exported from the photic zone to the deep ocean and sustains life of particle associated (PA) and free-living (FL) bacterial communities in...
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Online Access: | http://hdl.handle.net/10033/621971 https://doi.org/10.1002/lno.10487 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85012994395&origin=inward |
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fthzi:oai:repository.helmholtz-hzi.de:10033/621971 2023-05-15T15:46:01+02:00 Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: Evidence of dispersal limitation in the Bransfield Strait Milici, M. Milici, Mathias Vital, Marius Tomasch, Jürgen Badewien, Thomas H. Giebel, Helge A. Plumeier, Iris Wang, Hui Pieper, Dietmar H. Wagner-Döbler, Irene Simon, Meinhard HZI,Helmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstr. 7,38124 Braunschweig, Germany. 2017-05-01 http://hdl.handle.net/10033/621971 https://doi.org/10.1002/lno.10487 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85012994395&origin=inward en eng Wiley-Blackwell Limnology and Oceanography 3 62 doi:10.1002/lno.10487 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85012994395&origin=inward http://hdl.handle.net/10033/621971 2-s2.0-85012994395 SCOPUS_ID:85012994395 Attribution-NonCommercial-ShareAlike 4.0 International http://creativecommons.org/licenses/by-nc-sa/4.0/ CC-BY-NC-SA Article 2017 fthzi https://doi.org/10.1002/lno.10487 2022-03-09T17:40:25Z The Southern Ocean constitutes about 10% of the global oceans' volume and is characterized by high primary production. Particulate organic matter (POM) is exported from the photic zone to the deep ocean and sustains life of particle associated (PA) and free-living (FL) bacterial communities in the dark realm. Little is known about the composition and diversity of PA and FL bacterial communities below the photic zone and how they differ among various regions of the Southern Ocean. Therefore, we investigated the composition of small (3–8 μm) and large (> 8 μm) PA and FL (0.2–3 μm) bacterial communities between 500 m and 3600 m in the Bransfield Strait, Drake Passage, and the south Atlantic Ocean featuring also Southern Ocean water masses. PA bacterial communities had a higher OTU richness and evenness than FL ones. Taxonomic analysis revealed a different community composition between FL and PA bacteria. A large number of OTUs belonging to diverse phyla (Bacteroidetes, Planctomycetes, Betaproteobacteria, Deltaproteobacteria, and Verrucomicrobia) were significantly enriched on particles; in contrast very few bacterial lineages were FL specialists. Life-style (FL vs. PA) and region (Bransfield basin vs. other regions) strongly influenced bacterial communities. Depth explained only marginal fraction of the total variation (∼ 12%), suggesting that selective processes driven by depth have a smaller effect in the Southern Ocean when compared to life-style (25%) and region (31%). Overall these data indicate a strong influence of isolated water masses such as the basin of the Bransfield Strait on the composition of bacterial communities in the dark ocean. © 2017 The Authors Limnology and Oceanography published by Wiley Periodicals, Inc. on behalf of Association for the Sciences of Limnology and Oceanography Article in Journal/Newspaper Bransfield Strait Drake Passage South Atlantic Ocean Southern Ocean Helmholtz Centre of Infection Research (HZI), Braunschweig: Repository Bransfield Strait Drake Passage Southern Ocean Limnology and Oceanography 62 3 1080 1095 |
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Open Polar |
collection |
Helmholtz Centre of Infection Research (HZI), Braunschweig: Repository |
op_collection_id |
fthzi |
language |
English |
description |
The Southern Ocean constitutes about 10% of the global oceans' volume and is characterized by high primary production. Particulate organic matter (POM) is exported from the photic zone to the deep ocean and sustains life of particle associated (PA) and free-living (FL) bacterial communities in the dark realm. Little is known about the composition and diversity of PA and FL bacterial communities below the photic zone and how they differ among various regions of the Southern Ocean. Therefore, we investigated the composition of small (3–8 μm) and large (> 8 μm) PA and FL (0.2–3 μm) bacterial communities between 500 m and 3600 m in the Bransfield Strait, Drake Passage, and the south Atlantic Ocean featuring also Southern Ocean water masses. PA bacterial communities had a higher OTU richness and evenness than FL ones. Taxonomic analysis revealed a different community composition between FL and PA bacteria. A large number of OTUs belonging to diverse phyla (Bacteroidetes, Planctomycetes, Betaproteobacteria, Deltaproteobacteria, and Verrucomicrobia) were significantly enriched on particles; in contrast very few bacterial lineages were FL specialists. Life-style (FL vs. PA) and region (Bransfield basin vs. other regions) strongly influenced bacterial communities. Depth explained only marginal fraction of the total variation (∼ 12%), suggesting that selective processes driven by depth have a smaller effect in the Southern Ocean when compared to life-style (25%) and region (31%). Overall these data indicate a strong influence of isolated water masses such as the basin of the Bransfield Strait on the composition of bacterial communities in the dark ocean. © 2017 The Authors Limnology and Oceanography published by Wiley Periodicals, Inc. on behalf of Association for the Sciences of Limnology and Oceanography |
author2 |
HZI,Helmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstr. 7,38124 Braunschweig, Germany. |
format |
Article in Journal/Newspaper |
author |
Milici, M. Milici, Mathias Vital, Marius Tomasch, Jürgen Badewien, Thomas H. Giebel, Helge A. Plumeier, Iris Wang, Hui Pieper, Dietmar H. Wagner-Döbler, Irene Simon, Meinhard |
spellingShingle |
Milici, M. Milici, Mathias Vital, Marius Tomasch, Jürgen Badewien, Thomas H. Giebel, Helge A. Plumeier, Iris Wang, Hui Pieper, Dietmar H. Wagner-Döbler, Irene Simon, Meinhard Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: Evidence of dispersal limitation in the Bransfield Strait |
author_facet |
Milici, M. Milici, Mathias Vital, Marius Tomasch, Jürgen Badewien, Thomas H. Giebel, Helge A. Plumeier, Iris Wang, Hui Pieper, Dietmar H. Wagner-Döbler, Irene Simon, Meinhard |
author_sort |
Milici, M. |
title |
Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: Evidence of dispersal limitation in the Bransfield Strait |
title_short |
Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: Evidence of dispersal limitation in the Bransfield Strait |
title_full |
Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: Evidence of dispersal limitation in the Bransfield Strait |
title_fullStr |
Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: Evidence of dispersal limitation in the Bransfield Strait |
title_full_unstemmed |
Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: Evidence of dispersal limitation in the Bransfield Strait |
title_sort |
diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic southern ocean water masses: evidence of dispersal limitation in the bransfield strait |
publisher |
Wiley-Blackwell |
publishDate |
2017 |
url |
http://hdl.handle.net/10033/621971 https://doi.org/10.1002/lno.10487 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85012994395&origin=inward |
geographic |
Bransfield Strait Drake Passage Southern Ocean |
geographic_facet |
Bransfield Strait Drake Passage Southern Ocean |
genre |
Bransfield Strait Drake Passage South Atlantic Ocean Southern Ocean |
genre_facet |
Bransfield Strait Drake Passage South Atlantic Ocean Southern Ocean |
op_relation |
Limnology and Oceanography 3 62 doi:10.1002/lno.10487 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85012994395&origin=inward http://hdl.handle.net/10033/621971 2-s2.0-85012994395 SCOPUS_ID:85012994395 |
op_rights |
Attribution-NonCommercial-ShareAlike 4.0 International http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.1002/lno.10487 |
container_title |
Limnology and Oceanography |
container_volume |
62 |
container_issue |
3 |
container_start_page |
1080 |
op_container_end_page |
1095 |
_version_ |
1766380686416019456 |