Show simple item record

dc.contributor.authorKwon, Miye
dc.contributor.authorKim, Mincheol
dc.contributor.authorTakacs-Vesbach, Cristina
dc.contributor.authorLee, Jaejin
dc.contributor.authorHong, Soon Gyu
dc.contributor.authorKim, Sang Jong
dc.contributor.authorPriscu, John C.
dc.contributor.authorKim, Ok-Sun
dc.identifier.citationKwon, 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.en_US
dc.description.abstractPerennially 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.en_US
dc.titleNiche specialization of bacteria in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarcticaen_US
mus.citation.journaltitleEnvironmental Microbiologyen_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.universityMontana State University - Bozemanen_US

Files in this item


This item appears in the following Collection(s)

Show simple item record

MSU uses DSpace software, copyright © 2002-2017  Duraspace. For library collections that are not accessible, we are committed to providing reasonable accommodations and timely access to users with disabilities. For assistance, please submit an accessibility request for library material.