Niche specialization of bacteria in permanently ice‐covered lakes of the McMurdo Dry Valleys, Antarctica
Summary 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 a...
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crwiley:10.1111/1462-2920.13721 2024-10-06T13:44:10+00:00 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 Korea Polar Research Institute 2017 http://dx.doi.org/10.1111/1462-2920.13721 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.13721 http://onlinelibrary.wiley.com/wol1/doi/10.1111/1462-2920.13721/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 19, issue 6, page 2258-2271 ISSN 1462-2912 1462-2920 journal-article 2017 crwiley https://doi.org/10.1111/1462-2920.13721 2024-09-11T04:15:47Z Summary 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 Wiley Online Library Antarctic McMurdo Dry Valleys Miers ENVELOPE(163.850,163.850,-78.100,-78.100) 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) Environmental Microbiology 19 6 2258 2271 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Summary 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. |
author2 |
Korea Polar Research Institute |
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 |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/1462-2920.13721 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.13721 http://onlinelibrary.wiley.com/wol1/doi/10.1111/1462-2920.13721/fullpdf |
long_lat |
ENVELOPE(163.850,163.850,-78.100,-78.100) 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) |
geographic |
Antarctic McMurdo Dry Valleys Miers Bonney Fryxell Lake Fryxell Lake Miers |
geographic_facet |
Antarctic McMurdo Dry Valleys Miers Bonney Fryxell Lake Fryxell Lake Miers |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_source |
Environmental Microbiology volume 19, issue 6, page 2258-2271 ISSN 1462-2912 1462-2920 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
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_ |
1812182561706737664 |