Biogeography of bacterial communities exposed to progressive long-term environmental change
(2013) In The Isme Journal 7(5). p.937-948- 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... (More)
- 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. The ISME Journal (2013) 7, 937-948; doi:10.1038/ismej.2012.168; published online 20 December 2012 (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3853633
- author
- Logares, Ramiro ; Lindstrom, Eva S. ; Langenheder, Silke ; Logue, Jürg Brendan LU ; Paterson, Harriet ; Laybourn-Parry, Johanna ; Rengefors, Karin LU ; Tranvik, Lars and Bertilsson, Stefan
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Antarctica, Bacteria, environmental change, long-term, pyrosequencing, salinity
- in
- The Isme Journal
- volume
- 7
- issue
- 5
- pages
- 937 - 948
- publisher
- Nature Publishing Group
- external identifiers
-
- wos:000317963300005
- scopus:84876822224
- pmid:23254515
- ISSN
- 1751-7362
- DOI
- 10.1038/ismej.2012.168
- language
- English
- LU publication?
- yes
- id
- cb94c7a0-0530-48f2-bec3-0699551146dd (old id 3853633)
- date added to LUP
- 2016-04-01 10:51:36
- date last changed
- 2024-05-06 21:16:49
@article{cb94c7a0-0530-48f2-bec3-0699551146dd, 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. The ISME Journal (2013) 7, 937-948; doi:10.1038/ismej.2012.168; published online 20 December 2012}}, author = {{Logares, Ramiro and Lindstrom, Eva S. and Langenheder, Silke and Logue, Jürg Brendan and Paterson, Harriet and Laybourn-Parry, Johanna and Rengefors, Karin and Tranvik, Lars and Bertilsson, Stefan}}, issn = {{1751-7362}}, keywords = {{Antarctica; Bacteria; environmental change; long-term; pyrosequencing; salinity}}, language = {{eng}}, number = {{5}}, pages = {{937--948}}, publisher = {{Nature Publishing Group}}, series = {{The Isme Journal}}, title = {{Biogeography of bacterial communities exposed to progressive long-term environmental change}}, url = {{http://dx.doi.org/10.1038/ismej.2012.168}}, doi = {{10.1038/ismej.2012.168}}, volume = {{7}}, year = {{2013}}, }