Microbe biogeography tracks water masses in a dynamic oceanic frontal system
Dispersal limitation, not just environmental selection, plays an important role in microbial biogeography. The distance–decay relationship is thought to be weak in habitats where dispersal is high, such as in the pelagic environment, where ocean currents facilitate microbial dispersal. Most studies...
Published in: | Royal Society Open Science |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
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2017
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Online Access: | http://ora.ox.ac.uk/objects/uuid: https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170033 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.170033 https://doi.org/10.1098/rsos.170033 http://europepmc.org/article/MED/28405400 https://royalsocietypublishing.org/doi/10.1098/rsos.170033 https://www.ncbi.nlm.nih.gov/pubmed/28405400 https://core.ac.uk/display/83935556 https://ui.adsabs.harvard.edu/abs/2017RSOS.470033D/abstract https://rsos.royalsocietypublishing.org/content/4/3/170033 https://academic.microsoft.com/#/detail/2601637957 http://europepmc.org/articles/PMC5383857 |
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southwest indian ridge microbe biogeography dynamic frontal systems 1001 200 60 1004 20 Biology (Whole Organism) Research Article envir geo |
spellingShingle |
southwest indian ridge microbe biogeography dynamic frontal systems 1001 200 60 1004 20 Biology (Whole Organism) Research Article envir geo Philipp H. Boersch-Supan Svein-Ole Mikalsen Anni Djurhuus Alex Rogers Microbe biogeography tracks water masses in a dynamic oceanic frontal system |
topic_facet |
southwest indian ridge microbe biogeography dynamic frontal systems 1001 200 60 1004 20 Biology (Whole Organism) Research Article envir geo |
description |
Dispersal limitation, not just environmental selection, plays an important role in microbial biogeography. The distance–decay relationship is thought to be weak in habitats where dispersal is high, such as in the pelagic environment, where ocean currents facilitate microbial dispersal. Most studies of microbial community composition to date have observed little geographical heterogeneity on a regional scale (100 km). We present a study of microbial communities across a dynamic frontal zone in the southwest Indian Ocean and investigate the spatial structure of the microbes with respect to the different water masses separated by these fronts. We collected 153 samples of free-living microorganisms from five seamounts located along a gradient from subtropical to subantarctic waters and across three depth layers: (i) the sub-surface chlorophyll maximum (approx. 40 m), (ii) the bottom of the euphotic zone (approx. 200 m), and (iii) the benthic boundary layer (300–2000 m). Diversity and abundance of microbial operational taxonomic units (OTUs) were assessed by amplification and sequencing of the 16S rRNA gene on an Illumina MiSeq platform. Multivariate analyses showed that microbial communities were structured more strongly by depth than by latitude, with similar phyla occurring within each depth stratum across seamounts. The deep layer was homogeneous across the entire survey area, corresponding to the spread of Antarctic intermediate water. However, within both the sub-surface layer and the intermediate depth stratum there was evidence for OTU turnover across fronts. The microbiome of these layers appears to be divided into three distinct biological regimes corresponding to the subantarctic surface water, the convergence zone and subtropical. We show that microbial biogeography across depth and latitudinal gradients is linked to the water masses the microbes persist in, resulting in regional patterns of microbial biogeography that correspond to the regional scale physical oceanography. |
format |
Article in Journal/Newspaper |
author |
Philipp H. Boersch-Supan Svein-Ole Mikalsen Anni Djurhuus Alex Rogers |
author_facet |
Philipp H. Boersch-Supan Svein-Ole Mikalsen Anni Djurhuus Alex Rogers |
author_sort |
Philipp H. Boersch-Supan |
title |
Microbe biogeography tracks water masses in a dynamic oceanic frontal system |
title_short |
Microbe biogeography tracks water masses in a dynamic oceanic frontal system |
title_full |
Microbe biogeography tracks water masses in a dynamic oceanic frontal system |
title_fullStr |
Microbe biogeography tracks water masses in a dynamic oceanic frontal system |
title_full_unstemmed |
Microbe biogeography tracks water masses in a dynamic oceanic frontal system |
title_sort |
microbe biogeography tracks water masses in a dynamic oceanic frontal system |
publishDate |
2017 |
url |
http://ora.ox.ac.uk/objects/uuid: https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170033 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.170033 https://doi.org/10.1098/rsos.170033 http://europepmc.org/article/MED/28405400 https://royalsocietypublishing.org/doi/10.1098/rsos.170033 https://www.ncbi.nlm.nih.gov/pubmed/28405400 https://core.ac.uk/display/83935556 https://ui.adsabs.harvard.edu/abs/2017RSOS.470033D/abstract https://rsos.royalsocietypublishing.org/content/4/3/170033 https://academic.microsoft.com/#/detail/2601637957 http://europepmc.org/articles/PMC5383857 |
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Antarctic Indian |
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Antarctic Indian |
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Antarc* Antarctic |
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Antarc* Antarctic |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::1b67c8d4e1f9141839d062a404a099a6 2023-05-15T14:00:13+02:00 Microbe biogeography tracks water masses in a dynamic oceanic frontal system Philipp H. Boersch-Supan Svein-Ole Mikalsen Anni Djurhuus Alex Rogers 2017-03-15 http://ora.ox.ac.uk/objects/uuid: https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170033 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.170033 https://doi.org/10.1098/rsos.170033 http://europepmc.org/article/MED/28405400 https://royalsocietypublishing.org/doi/10.1098/rsos.170033 https://www.ncbi.nlm.nih.gov/pubmed/28405400 https://core.ac.uk/display/83935556 https://ui.adsabs.harvard.edu/abs/2017RSOS.470033D/abstract https://rsos.royalsocietypublishing.org/content/4/3/170033 https://academic.microsoft.com/#/detail/2601637957 http://europepmc.org/articles/PMC5383857 undefined unknown http://ora.ox.ac.uk/objects/uuid: https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170033 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.170033 http://dx.doi.org/10.1098/rsos.170033 http://europepmc.org/article/MED/28405400 https://royalsocietypublishing.org/doi/10.1098/rsos.170033 https://www.ncbi.nlm.nih.gov/pubmed/28405400 https://core.ac.uk/display/83935556 https://ui.adsabs.harvard.edu/abs/2017RSOS.470033D/abstract https://rsos.royalsocietypublishing.org/content/4/3/170033 https://academic.microsoft.com/#/detail/2601637957 https://dx.doi.org/10.1098/rsos.170033 http://europepmc.org/articles/PMC5383857 lic_creative-commons uuid:3cd9c7b2-fc64-4ed5-a5f4-4e924e84fc26 10.1098/rsos.170033 2601637957 oai:doaj.org/article:204c5d24891a4e3d9f5822a0658120a8 oai:pubmedcentral.nih.gov:5383857 28405400 10|opendoar____::2290a7385ed77cc5592dc2153229f082 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|doajarticles::c215d7df6759ca83f13aab2c3ea6da81 10|openaire____::8ac8380272269217cb09a928c8caa993 10|openaire____::5f532a3fc4f1ea403f37070f59a7a53a 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|openaire____::55045bd2a65019fd8e6741a755395c8c 10|opendoar____::eda80a3d5b344bc40f3bc04f65b7a357 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c 10|openaire____::806360c771262b4d6770e7cdf04b5c5a 10|driver______::bee53aa31dc2cbb538c10c2b65fa5824 southwest indian ridge microbe biogeography dynamic frontal systems 1001 200 60 1004 20 Biology (Whole Organism) Research Article envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2017 fttriple https://doi.org/10.1098/rsos.170033 2023-01-22T17:32:03Z Dispersal limitation, not just environmental selection, plays an important role in microbial biogeography. The distance–decay relationship is thought to be weak in habitats where dispersal is high, such as in the pelagic environment, where ocean currents facilitate microbial dispersal. Most studies of microbial community composition to date have observed little geographical heterogeneity on a regional scale (100 km). We present a study of microbial communities across a dynamic frontal zone in the southwest Indian Ocean and investigate the spatial structure of the microbes with respect to the different water masses separated by these fronts. We collected 153 samples of free-living microorganisms from five seamounts located along a gradient from subtropical to subantarctic waters and across three depth layers: (i) the sub-surface chlorophyll maximum (approx. 40 m), (ii) the bottom of the euphotic zone (approx. 200 m), and (iii) the benthic boundary layer (300–2000 m). Diversity and abundance of microbial operational taxonomic units (OTUs) were assessed by amplification and sequencing of the 16S rRNA gene on an Illumina MiSeq platform. Multivariate analyses showed that microbial communities were structured more strongly by depth than by latitude, with similar phyla occurring within each depth stratum across seamounts. The deep layer was homogeneous across the entire survey area, corresponding to the spread of Antarctic intermediate water. However, within both the sub-surface layer and the intermediate depth stratum there was evidence for OTU turnover across fronts. The microbiome of these layers appears to be divided into three distinct biological regimes corresponding to the subantarctic surface water, the convergence zone and subtropical. We show that microbial biogeography across depth and latitudinal gradients is linked to the water masses the microbes persist in, resulting in regional patterns of microbial biogeography that correspond to the regional scale physical oceanography. Article in Journal/Newspaper Antarc* Antarctic Unknown Antarctic Indian Royal Society Open Science 4 3 170033 |