Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica
Perennially ice-covered lakes in the McMurdo Dry Valleys, Antarctica, are chemically stratified with depth and have distinct biological gradients. Despite long-term research on these unique environments, data on the structure of the microbial communities in the water columns of these lakes are scarc...
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ftmontanastateu:oai:scholarworks.montana.edu:1/13601 2023-05-15T13:54:59+02:00 Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica Kwon, Miye Kim, Mincheol Takacs-Vesbach, Cristina Lee, Jaejin Hong, Soon Gyu Kim, Sang Jong Priscu, John C. Kim, Ok-Sun 2017-04 application/pdf https://scholarworks.montana.edu/xmlui/handle/1/13601 unknown Kwon, Miye, Mincheol Kim, Cristina Takacs-Vesbach, Jaejin Lee, Soon Gyu Hong, Sang Jong Kim, John C. Priscu, and Ok-Sun Kim. "Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica." Environmental Microbiology (April 2017). DOI:10.1111/1462-2920.13721. 1462-2912 https://scholarworks.montana.edu/xmlui/handle/1/13601 Article 2017 ftmontanastateu https://doi.org/10.1111/1462-2920.13721 2022-06-06T07:26:53Z Perennially ice-covered lakes in the McMurdo Dry Valleys, Antarctica, are chemically stratified with depth and have distinct biological gradients. Despite long-term research on these unique environments, data on the structure of the microbial communities in the water columns of these lakes are scarce. Here, we examined bacterial diversity in five ice-covered Antarctic lakes by 16S rRNA gene-based pyrosequencing. Distinct communities were present in each lake, reflecting the unique biogeochemical characteristics of these environments. Further, certain bacterial lineages were confined exclusively to specific depths within each lake. For example, candidate division WM88 occurred solely at a depth of 15 m in Lake Fryxell, whereas unknown lineages of Chlorobi were found only at a depth of 18 m in Lake Miers, and two distinct classes of Firmicutes inhabited East and West Lobe Bonney at depths of 30 m. Redundancy analysis revealed that community variation of bacterioplankton could be explained by the distinct conditions of each lake and depth; in particular, assemblages from layers beneath the chemocline had biogeochemical associations that differed from those in the upper layers. These patterns of community composition may represent bacterial adaptations to the extreme and unique biogeochemical gradients of ice-covered lakes in the McMurdo Dry Valleys. Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Dry Valleys Montana State University (MSU): ScholarWorks Antarctic Bonney ENVELOPE(162.417,162.417,-77.717,-77.717) Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Lake Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Lake Miers ENVELOPE(-60.450,-60.450,-62.717,-62.717) McMurdo Dry Valleys Miers ENVELOPE(163.850,163.850,-78.100,-78.100) Environmental Microbiology 19 6 2258 2271 |
institution |
Open Polar |
collection |
Montana State University (MSU): ScholarWorks |
op_collection_id |
ftmontanastateu |
language |
unknown |
description |
Perennially ice-covered lakes in the McMurdo Dry Valleys, Antarctica, are chemically stratified with depth and have distinct biological gradients. Despite long-term research on these unique environments, data on the structure of the microbial communities in the water columns of these lakes are scarce. Here, we examined bacterial diversity in five ice-covered Antarctic lakes by 16S rRNA gene-based pyrosequencing. Distinct communities were present in each lake, reflecting the unique biogeochemical characteristics of these environments. Further, certain bacterial lineages were confined exclusively to specific depths within each lake. For example, candidate division WM88 occurred solely at a depth of 15 m in Lake Fryxell, whereas unknown lineages of Chlorobi were found only at a depth of 18 m in Lake Miers, and two distinct classes of Firmicutes inhabited East and West Lobe Bonney at depths of 30 m. Redundancy analysis revealed that community variation of bacterioplankton could be explained by the distinct conditions of each lake and depth; in particular, assemblages from layers beneath the chemocline had biogeochemical associations that differed from those in the upper layers. These patterns of community composition may represent bacterial adaptations to the extreme and unique biogeochemical gradients of ice-covered lakes in the McMurdo Dry Valleys. |
format |
Article in Journal/Newspaper |
author |
Kwon, Miye Kim, Mincheol Takacs-Vesbach, Cristina Lee, Jaejin Hong, Soon Gyu Kim, Sang Jong Priscu, John C. Kim, Ok-Sun |
spellingShingle |
Kwon, Miye Kim, Mincheol Takacs-Vesbach, Cristina Lee, Jaejin Hong, Soon Gyu Kim, Sang Jong Priscu, John C. Kim, Ok-Sun Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica |
author_facet |
Kwon, Miye Kim, Mincheol Takacs-Vesbach, Cristina Lee, Jaejin Hong, Soon Gyu Kim, Sang Jong Priscu, John C. Kim, Ok-Sun |
author_sort |
Kwon, Miye |
title |
Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica |
title_short |
Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica |
title_full |
Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica |
title_fullStr |
Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica |
title_full_unstemmed |
Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica |
title_sort |
niche specialization of bacteria in permanently ice-covered lakes of the mcmurdo dry valleys, antarctica |
publishDate |
2017 |
url |
https://scholarworks.montana.edu/xmlui/handle/1/13601 |
long_lat |
ENVELOPE(162.417,162.417,-77.717,-77.717) ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(-60.450,-60.450,-62.717,-62.717) ENVELOPE(163.850,163.850,-78.100,-78.100) |
geographic |
Antarctic Bonney Fryxell Lake Fryxell Lake Miers McMurdo Dry Valleys Miers |
geographic_facet |
Antarctic Bonney Fryxell Lake Fryxell Lake Miers McMurdo Dry Valleys Miers |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_relation |
Kwon, Miye, Mincheol Kim, Cristina Takacs-Vesbach, Jaejin Lee, Soon Gyu Hong, Sang Jong Kim, John C. Priscu, and Ok-Sun Kim. "Niche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica." Environmental Microbiology (April 2017). DOI:10.1111/1462-2920.13721. 1462-2912 https://scholarworks.montana.edu/xmlui/handle/1/13601 |
op_doi |
https://doi.org/10.1111/1462-2920.13721 |
container_title |
Environmental Microbiology |
container_volume |
19 |
container_issue |
6 |
container_start_page |
2258 |
op_container_end_page |
2271 |
_version_ |
1766261198942109696 |