Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water
Pony Lake, at Cape Royds, Antarctica, is a shallow, eutrophic, coastal lake that freezes solid in the winter. Changes in Pony Lake's physicochemical parameters and microbial community were studied during the transition from ice to open water. Due to rising water temperatures, the progressive me...
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ftmontanastateu:oai:scholarworks.montana.edu:1/12446 2023-05-15T13:54:59+02:00 Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water Dieser, Markus Foreman, Christine M. Jaros, C. Lisle, John T. Greenwood, Mark C. Laybourn-Parry, Johanna Miller, P. L. Chin, Yu-Ping McKnight, Diane M. 2013-03 application/pdf https://scholarworks.montana.edu/xmlui/handle/1/12446 unknown Dieser M, Foreman CM, Jaros C, Lisle JT, Greenwood M, Laybourn-Parry J, Miller PL, Chin Y-P, McKnight DM, "Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water," Antarctic Science. March 2013 25(5):663–675 0954-1020 https://scholarworks.montana.edu/xmlui/handle/1/12446 Article 2013 ftmontanastateu 2022-06-06T07:27:01Z Pony Lake, at Cape Royds, Antarctica, is a shallow, eutrophic, coastal lake that freezes solid in the winter. Changes in Pony Lake's physicochemical parameters and microbial community were studied during the transition from ice to open water. Due to rising water temperatures, the progressive melt of the ice column and the gradual mixing of basal brines into the remaining water column, Pony Lake evolved physically and chemically over the course of the summer, thereby affecting the microbial community composition. Temperature, pH, conductivity, nutrients and major ion concentrations reached their maximum in January. Pony Lake was colonized by bacteria, viruses, phytoflagellates, ciliates, and a small number of rotifers. Primary and bacterial production were highest in mid-December (2.66 mg C 1-1 d-1 and 30.5 µg C 1-1 d-1, respectively). A 16S rRNA gene analysis of the bacterioplankton revealed 34 unique sequences dominated by members of the ß- and y-proteobacteria lineages. Cluster analyses on denaturing gradient gel electrophoresis (DGGE) banding patterns and community structure indicated a shift in the dominant members of the microbial community during the transition from winter ice, to early, and late summer lakewater. Our data demonstrate that temporal changes in physicochemical parameters during the summer months determine community dynamics and mediate changes in microbial species composition. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Montana State University (MSU): ScholarWorks Antarctic Cape Royds ENVELOPE(166.150,166.150,-77.550,-77.550) Pony Lake ENVELOPE(166.150,166.150,-77.550,-77.550) Royds ENVELOPE(166.150,166.150,-77.550,-77.550) |
institution |
Open Polar |
collection |
Montana State University (MSU): ScholarWorks |
op_collection_id |
ftmontanastateu |
language |
unknown |
description |
Pony Lake, at Cape Royds, Antarctica, is a shallow, eutrophic, coastal lake that freezes solid in the winter. Changes in Pony Lake's physicochemical parameters and microbial community were studied during the transition from ice to open water. Due to rising water temperatures, the progressive melt of the ice column and the gradual mixing of basal brines into the remaining water column, Pony Lake evolved physically and chemically over the course of the summer, thereby affecting the microbial community composition. Temperature, pH, conductivity, nutrients and major ion concentrations reached their maximum in January. Pony Lake was colonized by bacteria, viruses, phytoflagellates, ciliates, and a small number of rotifers. Primary and bacterial production were highest in mid-December (2.66 mg C 1-1 d-1 and 30.5 µg C 1-1 d-1, respectively). A 16S rRNA gene analysis of the bacterioplankton revealed 34 unique sequences dominated by members of the ß- and y-proteobacteria lineages. Cluster analyses on denaturing gradient gel electrophoresis (DGGE) banding patterns and community structure indicated a shift in the dominant members of the microbial community during the transition from winter ice, to early, and late summer lakewater. Our data demonstrate that temporal changes in physicochemical parameters during the summer months determine community dynamics and mediate changes in microbial species composition. |
format |
Article in Journal/Newspaper |
author |
Dieser, Markus Foreman, Christine M. Jaros, C. Lisle, John T. Greenwood, Mark C. Laybourn-Parry, Johanna Miller, P. L. Chin, Yu-Ping McKnight, Diane M. |
spellingShingle |
Dieser, Markus Foreman, Christine M. Jaros, C. Lisle, John T. Greenwood, Mark C. Laybourn-Parry, Johanna Miller, P. L. Chin, Yu-Ping McKnight, Diane M. Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water |
author_facet |
Dieser, Markus Foreman, Christine M. Jaros, C. Lisle, John T. Greenwood, Mark C. Laybourn-Parry, Johanna Miller, P. L. Chin, Yu-Ping McKnight, Diane M. |
author_sort |
Dieser, Markus |
title |
Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water |
title_short |
Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water |
title_full |
Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water |
title_fullStr |
Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water |
title_full_unstemmed |
Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water |
title_sort |
physicochemical and biological dynamics in a coastal antarctic lake as it transitions from frozen to open water |
publishDate |
2013 |
url |
https://scholarworks.montana.edu/xmlui/handle/1/12446 |
long_lat |
ENVELOPE(166.150,166.150,-77.550,-77.550) ENVELOPE(166.150,166.150,-77.550,-77.550) ENVELOPE(166.150,166.150,-77.550,-77.550) |
geographic |
Antarctic Cape Royds Pony Lake Royds |
geographic_facet |
Antarctic Cape Royds Pony Lake Royds |
genre |
Antarc* Antarctic Antarctic Science Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica |
op_relation |
Dieser M, Foreman CM, Jaros C, Lisle JT, Greenwood M, Laybourn-Parry J, Miller PL, Chin Y-P, McKnight DM, "Physicochemical and biological dynamics in a coastal Antarctic lake as it transitions from frozen to open water," Antarctic Science. March 2013 25(5):663–675 0954-1020 https://scholarworks.montana.edu/xmlui/handle/1/12446 |
_version_ |
1766261199680307200 |