Bacterial diversity and biogeography in deep-sea surface sediments of the South Atlantic Ocean
Abstract Microbial biogeographic patterns in the deep sea depend on the ability of microorganisms to disperse. One possible limitation to microbial dispersal may be the Walvis Ridge that separates the Antarctic Lower Circumpolar Deep Water from the North Atlantic Deep Water. We examined bacterial co...
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2009
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croxfordunivpr:10.1038/ismej.2009.106 2024-05-19T07:31:05+00:00 Bacterial diversity and biogeography in deep-sea surface sediments of the South Atlantic Ocean Schauer, Regina Bienhold, Christina Ramette, Alban Harder, Jens 2009 http://dx.doi.org/10.1038/ismej.2009.106 http://www.nature.com/articles/ismej2009106.pdf http://www.nature.com/articles/ismej2009106 https://academic.oup.com/ismej/article-pdf/4/2/159/56402879/41396_2010_article_bfismej2009106.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights The ISME Journal volume 4, issue 2, page 159-170 ISSN 1751-7362 1751-7370 journal-article 2009 croxfordunivpr https://doi.org/10.1038/ismej.2009.106 2024-04-25T07:59:51Z Abstract Microbial biogeographic patterns in the deep sea depend on the ability of microorganisms to disperse. One possible limitation to microbial dispersal may be the Walvis Ridge that separates the Antarctic Lower Circumpolar Deep Water from the North Atlantic Deep Water. We examined bacterial communities in three basins of the eastern South Atlantic Ocean to determine diversity and biogeography of bacterial communities in deep-sea surface sediments. The analysis of 16S ribosomal RNA (rRNA) gene clone libraries in each basin revealed a high diversity, representing 521 phylotypes with 98% identity in 1051 sequences. Phylotypes affiliated with Gammaproteobacteria, Deltaproteobacteria and Acidobacteria were present in all three basins. The distribution of these shared phylotypes seemed to be influenced neither by the Walvis Ridge nor by different deep water masses, suggesting a high dispersal capability, as also indicated by low distance–decay relationships. However, the total bacterial diversity showed significant differences between the basins, based on 16S rRNA gene sequences as well as on terminal restriction fragment length polymorphism fingerprints. Noticeably, both geographic distance and environmental heterogeneity influenced bacterial diversity at intermediate (10–3000 km) and large scales (>3000 km), indicating a complex interplay of local contemporary environmental effects and dispersal limitation. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Deep Water North Atlantic South Atlantic Ocean Oxford University Press The ISME Journal 4 2 159 170 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Microbial biogeographic patterns in the deep sea depend on the ability of microorganisms to disperse. One possible limitation to microbial dispersal may be the Walvis Ridge that separates the Antarctic Lower Circumpolar Deep Water from the North Atlantic Deep Water. We examined bacterial communities in three basins of the eastern South Atlantic Ocean to determine diversity and biogeography of bacterial communities in deep-sea surface sediments. The analysis of 16S ribosomal RNA (rRNA) gene clone libraries in each basin revealed a high diversity, representing 521 phylotypes with 98% identity in 1051 sequences. Phylotypes affiliated with Gammaproteobacteria, Deltaproteobacteria and Acidobacteria were present in all three basins. The distribution of these shared phylotypes seemed to be influenced neither by the Walvis Ridge nor by different deep water masses, suggesting a high dispersal capability, as also indicated by low distance–decay relationships. However, the total bacterial diversity showed significant differences between the basins, based on 16S rRNA gene sequences as well as on terminal restriction fragment length polymorphism fingerprints. Noticeably, both geographic distance and environmental heterogeneity influenced bacterial diversity at intermediate (10–3000 km) and large scales (>3000 km), indicating a complex interplay of local contemporary environmental effects and dispersal limitation. |
format |
Article in Journal/Newspaper |
author |
Schauer, Regina Bienhold, Christina Ramette, Alban Harder, Jens |
spellingShingle |
Schauer, Regina Bienhold, Christina Ramette, Alban Harder, Jens Bacterial diversity and biogeography in deep-sea surface sediments of the South Atlantic Ocean |
author_facet |
Schauer, Regina Bienhold, Christina Ramette, Alban Harder, Jens |
author_sort |
Schauer, Regina |
title |
Bacterial diversity and biogeography in deep-sea surface sediments of the South Atlantic Ocean |
title_short |
Bacterial diversity and biogeography in deep-sea surface sediments of the South Atlantic Ocean |
title_full |
Bacterial diversity and biogeography in deep-sea surface sediments of the South Atlantic Ocean |
title_fullStr |
Bacterial diversity and biogeography in deep-sea surface sediments of the South Atlantic Ocean |
title_full_unstemmed |
Bacterial diversity and biogeography in deep-sea surface sediments of the South Atlantic Ocean |
title_sort |
bacterial diversity and biogeography in deep-sea surface sediments of the south atlantic ocean |
publisher |
Oxford University Press (OUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1038/ismej.2009.106 http://www.nature.com/articles/ismej2009106.pdf http://www.nature.com/articles/ismej2009106 https://academic.oup.com/ismej/article-pdf/4/2/159/56402879/41396_2010_article_bfismej2009106.pdf |
genre |
Antarc* Antarctic North Atlantic Deep Water North Atlantic South Atlantic Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Deep Water North Atlantic South Atlantic Ocean |
op_source |
The ISME Journal volume 4, issue 2, page 159-170 ISSN 1751-7362 1751-7370 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights |
op_doi |
https://doi.org/10.1038/ismej.2009.106 |
container_title |
The ISME Journal |
container_volume |
4 |
container_issue |
2 |
container_start_page |
159 |
op_container_end_page |
170 |
_version_ |
1799468928983891968 |