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Biodiversity and ecophysiology of bacteria associated with Antarctic Sea ice


Bowman, JP and Brown, MV and Nichols, DS, Biodiversity and ecophysiology of bacteria associated with Antarctic Sea ice, Antarctic Science, 9, (2) pp. 134-142. ISSN 0954-1020 (1997) [Refereed Article]

DOI: doi:10.1017/S0954102097000175


A total of 135 bacterial strains were isolated from congelation (land fast) sea ice samples and ice algae biomass samples obtained from the coastal areas of the Vestfold Hills in East Antarctica (68°S, 78°E) during the summers of 1992-95. The sea ice isolates, along with reference strains, were analysed by numerical taxonomy and for DNA base composition in order to determine the biodiversity of sea ice bacteria. From these analyses 22 clusters of strains (phena) were obtained with most phena apparently representing novel bacterial taxa. The sea ice isolates could be categorized into three groups based on their ecophysiology: 1) slightly halophilic, psychrophilic bacteria often possessing fastidious growth requirements and which were predominantly isolated from sea ice algae biomass or from algae-rich ice samples; 2) halotolerant and psychrotolerant bacteria; and 3) non-halophilic bacteria isolated primarily from upper sections of congelation ice and other ice samples with low levels of algal biomass.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Bacteriology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Bowman, JP (Associate Professor John Bowman)
UTAS Author:Brown, MV (Mr Mark Brown)
UTAS Author:Nichols, DS (Dr David Nichols)
ID Code:10406
Year Published:1997
Web of Science® Times Cited:29
Deposited By:Agricultural Science
Deposited On:1997-08-01
Last Modified:2011-08-11

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