Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica
Air temperatures exceeding 0°C in Taylor Valley, Antarctica 17-25 degree days each summer and constant solar irradiance melt glacial and lake ice to from liquid water moats at the edges of permanently ice-covered lakes. Moats are fed by glacial streams and interact with comparatively large volumes o...
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Montana State University - Bozeman, College of Agriculture
2007
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ftmontanastateu:oai:scholarworks.montana.edu:1/1898 2023-05-15T13:54:59+02:00 Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica Moore, Joel Grant Chairperson, Graduate Committee: John C. Priscu. Antarctica 2007 application/pdf https://scholarworks.montana.edu/xmlui/handle/1/1898 en eng Montana State University - Bozeman, College of Agriculture https://scholarworks.montana.edu/xmlui/handle/1/1898 Copyright 2007 by Joel Grant Moore Bacterial growth Microbial ecology Plankton Plants Radiation Measurement Thesis 2007 ftmontanastateu 2022-06-06T07:27:57Z Air temperatures exceeding 0°C in Taylor Valley, Antarctica 17-25 degree days each summer and constant solar irradiance melt glacial and lake ice to from liquid water moats at the edges of permanently ice-covered lakes. Moats are fed by glacial streams and interact with comparatively large volumes of ice-covered lake water. This study investigated stream influence on moat chemistry and microbial biomass, productivity and diversity in the moat of East Lake Bonney (ELB) and compared the moat to the ice-covered portion of ELB. Stream inflow was a source of dissolved ions, inorganic carbon (DIC) inorganic nitrogen (DIN), and soluble reactive phosphorus (SRP) to the moat. SRP was rapidly removed in the moat near the stream inflow. Melted ELB ice and biological uptake reduced concentrations of DIN and DIC, resulting in a negative relationship to the inflow. Stream nutrients were correlated with high chlorophyll a and bacterial biomass near the inflow, were positively correlated with bacterial diversity, and negatively correlated with phytoplankton diversity. Correlations between nutrient availability and microbial biomass suggest resource limitation with respect to DIN and SRP, and infer dependence of heterotrophic bacterioplankton on primary productivity. Thesis Antarc* Antarctica Montana State University (MSU): ScholarWorks Bonney ENVELOPE(162.417,162.417,-77.717,-77.717) East Lake ENVELOPE(142.682,142.682,-66.995,-66.995) Lake Bonney ENVELOPE(-25.588,-25.588,-80.361,-80.361) Taylor Valley ENVELOPE(163.000,163.000,-77.617,-77.617) |
institution |
Open Polar |
collection |
Montana State University (MSU): ScholarWorks |
op_collection_id |
ftmontanastateu |
language |
English |
topic |
Bacterial growth Microbial ecology Plankton Plants Radiation Measurement |
spellingShingle |
Bacterial growth Microbial ecology Plankton Plants Radiation Measurement Moore, Joel Grant Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica |
topic_facet |
Bacterial growth Microbial ecology Plankton Plants Radiation Measurement |
description |
Air temperatures exceeding 0°C in Taylor Valley, Antarctica 17-25 degree days each summer and constant solar irradiance melt glacial and lake ice to from liquid water moats at the edges of permanently ice-covered lakes. Moats are fed by glacial streams and interact with comparatively large volumes of ice-covered lake water. This study investigated stream influence on moat chemistry and microbial biomass, productivity and diversity in the moat of East Lake Bonney (ELB) and compared the moat to the ice-covered portion of ELB. Stream inflow was a source of dissolved ions, inorganic carbon (DIC) inorganic nitrogen (DIN), and soluble reactive phosphorus (SRP) to the moat. SRP was rapidly removed in the moat near the stream inflow. Melted ELB ice and biological uptake reduced concentrations of DIN and DIC, resulting in a negative relationship to the inflow. Stream nutrients were correlated with high chlorophyll a and bacterial biomass near the inflow, were positively correlated with bacterial diversity, and negatively correlated with phytoplankton diversity. Correlations between nutrient availability and microbial biomass suggest resource limitation with respect to DIN and SRP, and infer dependence of heterotrophic bacterioplankton on primary productivity. |
author2 |
Chairperson, Graduate Committee: John C. Priscu. |
format |
Thesis |
author |
Moore, Joel Grant |
author_facet |
Moore, Joel Grant |
author_sort |
Moore, Joel Grant |
title |
Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica |
title_short |
Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica |
title_full |
Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica |
title_fullStr |
Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica |
title_full_unstemmed |
Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica |
title_sort |
diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of lake bonney, antarctica |
publisher |
Montana State University - Bozeman, College of Agriculture |
publishDate |
2007 |
url |
https://scholarworks.montana.edu/xmlui/handle/1/1898 |
op_coverage |
Antarctica |
long_lat |
ENVELOPE(162.417,162.417,-77.717,-77.717) ENVELOPE(142.682,142.682,-66.995,-66.995) ENVELOPE(-25.588,-25.588,-80.361,-80.361) ENVELOPE(163.000,163.000,-77.617,-77.617) |
geographic |
Bonney East Lake Lake Bonney Taylor Valley |
geographic_facet |
Bonney East Lake Lake Bonney Taylor Valley |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://scholarworks.montana.edu/xmlui/handle/1/1898 |
op_rights |
Copyright 2007 by Joel Grant Moore |
_version_ |
1766261201911676928 |