Biogeography of bacterial communities exposed to progressive long-term environmental change
Abstract The response of microbial communities to long-term environmental change is poorly understood. Here, we study bacterioplankton communities in a unique system of coastal Antarctic lakes that were exposed to progressive long-term environmental change, using 454 pyrosequencing of the 16S rDNA g...
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Oxford University Press (OUP)
2012
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Online Access: | http://dx.doi.org/10.1038/ismej.2012.168 http://www.nature.com/articles/ismej2012168.pdf http://www.nature.com/articles/ismej2012168 https://academic.oup.com/ismej/article-pdf/7/5/937/56426280/41396_2013_article_bfismej2012168.pdf |
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croxfordunivpr:10.1038/ismej.2012.168 2024-09-30T14:24:37+00:00 Biogeography of bacterial communities exposed to progressive long-term environmental change Logares, Ramiro Lindström, Eva S Langenheder, Silke Logue, Jürg B Paterson, Harriet Laybourn-Parry, Johanna Rengefors, Karin Tranvik, Lars Bertilsson, Stefan 2012 http://dx.doi.org/10.1038/ismej.2012.168 http://www.nature.com/articles/ismej2012168.pdf http://www.nature.com/articles/ismej2012168 https://academic.oup.com/ismej/article-pdf/7/5/937/56426280/41396_2013_article_bfismej2012168.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by-nc-nd/3.0/ The ISME Journal volume 7, issue 5, page 937-948 ISSN 1751-7362 1751-7370 journal-article 2012 croxfordunivpr https://doi.org/10.1038/ismej.2012.168 2024-09-17T04:27:37Z Abstract The response of microbial communities to long-term environmental change is poorly understood. Here, we study bacterioplankton communities in a unique system of coastal Antarctic lakes that were exposed to progressive long-term environmental change, using 454 pyrosequencing of the 16S rDNA gene (V3–V4 regions). At the time of formation, most of the studied lakes harbored marine-coastal microbial communities, as they were connected to the sea. During the past 20 000 years, most lakes isolated from the sea, and subsequently they experienced a gradual, but strong, salinity change that eventually developed into a gradient ranging from freshwater (salinity 0) to hypersaline (salinity 100). Our results indicated that present bacterioplankton community composition was strongly correlated with salinity and weakly correlated with geographical distance between lakes. A few abundant taxa were shared between some lakes and coastal marine communities. Nevertheless, lakes contained a large number of taxa that were not detected in the adjacent sea. Abundant and rare taxa within saline communities presented similar biogeography, suggesting that these groups have comparable environmental sensitivity. Habitat specialists and generalists were detected among abundant and rare taxa, with specialists being relatively more abundant at the extremes of the salinity gradient. Altogether, progressive long-term salinity change appears to have promoted the diversification of bacterioplankton communities by modifying the composition of ancestral communities and by allowing the establishment of new taxa. Article in Journal/Newspaper Antarc* Antarctic Oxford University Press Antarctic The ISME Journal 7 5 937 948 |
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Open Polar |
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Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract The response of microbial communities to long-term environmental change is poorly understood. Here, we study bacterioplankton communities in a unique system of coastal Antarctic lakes that were exposed to progressive long-term environmental change, using 454 pyrosequencing of the 16S rDNA gene (V3–V4 regions). At the time of formation, most of the studied lakes harbored marine-coastal microbial communities, as they were connected to the sea. During the past 20 000 years, most lakes isolated from the sea, and subsequently they experienced a gradual, but strong, salinity change that eventually developed into a gradient ranging from freshwater (salinity 0) to hypersaline (salinity 100). Our results indicated that present bacterioplankton community composition was strongly correlated with salinity and weakly correlated with geographical distance between lakes. A few abundant taxa were shared between some lakes and coastal marine communities. Nevertheless, lakes contained a large number of taxa that were not detected in the adjacent sea. Abundant and rare taxa within saline communities presented similar biogeography, suggesting that these groups have comparable environmental sensitivity. Habitat specialists and generalists were detected among abundant and rare taxa, with specialists being relatively more abundant at the extremes of the salinity gradient. Altogether, progressive long-term salinity change appears to have promoted the diversification of bacterioplankton communities by modifying the composition of ancestral communities and by allowing the establishment of new taxa. |
format |
Article in Journal/Newspaper |
author |
Logares, Ramiro Lindström, Eva S Langenheder, Silke Logue, Jürg B Paterson, Harriet Laybourn-Parry, Johanna Rengefors, Karin Tranvik, Lars Bertilsson, Stefan |
spellingShingle |
Logares, Ramiro Lindström, Eva S Langenheder, Silke Logue, Jürg B Paterson, Harriet Laybourn-Parry, Johanna Rengefors, Karin Tranvik, Lars Bertilsson, Stefan Biogeography of bacterial communities exposed to progressive long-term environmental change |
author_facet |
Logares, Ramiro Lindström, Eva S Langenheder, Silke Logue, Jürg B Paterson, Harriet Laybourn-Parry, Johanna Rengefors, Karin Tranvik, Lars Bertilsson, Stefan |
author_sort |
Logares, Ramiro |
title |
Biogeography of bacterial communities exposed to progressive long-term environmental change |
title_short |
Biogeography of bacterial communities exposed to progressive long-term environmental change |
title_full |
Biogeography of bacterial communities exposed to progressive long-term environmental change |
title_fullStr |
Biogeography of bacterial communities exposed to progressive long-term environmental change |
title_full_unstemmed |
Biogeography of bacterial communities exposed to progressive long-term environmental change |
title_sort |
biogeography of bacterial communities exposed to progressive long-term environmental change |
publisher |
Oxford University Press (OUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1038/ismej.2012.168 http://www.nature.com/articles/ismej2012168.pdf http://www.nature.com/articles/ismej2012168 https://academic.oup.com/ismej/article-pdf/7/5/937/56426280/41396_2013_article_bfismej2012168.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
The ISME Journal volume 7, issue 5, page 937-948 ISSN 1751-7362 1751-7370 |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_doi |
https://doi.org/10.1038/ismej.2012.168 |
container_title |
The ISME Journal |
container_volume |
7 |
container_issue |
5 |
container_start_page |
937 |
op_container_end_page |
948 |
_version_ |
1811641713560649728 |