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dc.contributor.advisorChairperson, Graduate Committee: John C. Priscu.en
dc.contributor.authorMoore, Joel Granten
dc.coverage.spatialAntarcticaen
dc.date.accessioned2013-06-25T18:40:19Z
dc.date.available2013-06-25T18:40:19Z
dc.date.issued2007en
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/1898
dc.description.abstractAir 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.en
dc.language.isoengen
dc.publisherMontana State University - Bozeman, College of Agricultureen
dc.subject.lcshBacterial growth.en
dc.subject.lcshMicrobial ecology.en
dc.subject.lcshPhytoplankton.en
dc.subject.lcshRadiation Measurement.en
dc.titleDiversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica
dc.typeThesis
dc.rights.holderCopyright Joel Grant Moore 2007en
thesis.catalog.ckey1286561en
thesis.degree.committeemembersMembers, Graduate Committee: Brian McGlynn; Mark Skidmoreen
thesis.degree.departmentLand Resources & Environmental Sciences.en
thesis.degree.genreThesisen
thesis.degree.nameMSen
thesis.format.extentfirstpage1en
thesis.format.extentlastpage123en
mus.identifier.categoryLife Sciences & Earth Sciences
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.universityMontana State University - Bozemanen_US


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