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Microbial community variation in pristine and polluted nearshore Antarctic sediments


Powell, S and Bowman, JP and Snape, I and Stark, JS, Microbial community variation in pristine and polluted nearshore Antarctic sediments, FEMS Microbiology Ecology, 45, (2) pp. 135-145. ISSN 0168-6496 (2003) [Refereed Article]

DOI: doi:10.1016/S0168-6496(03)00135-1


Two molecular methods were used to investigate the microbial population of Antarctic marine sediments to determine the effects of petroleum and heavy metal pollution. Sediment samples were collected in a nested design from impacted and non-impacted locations. A detailed description of the diversity of the microbial population in two samples was obtained using 16S ribosomal DNA clone libraries constructed from an impacted and a non-impacted location. The clone libraries were very similar with the exception of two sequence clusters containing clones from only the impacted location. All samples were analysed by denaturing gradient gel electrophoresis. The band patterns generated were transformed into a presence/absence matrix and a multivariate approach was used to test for differences in the locations. Statistically significant differences were observed both between and within locations. Impacted locations showed a greater variability within themselves than the control locations. Correlations between the community patterns and environmental variables suggested that pollution was one of a number of factors affecting the microbial community composition. © 2003 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Microbial ecology
Objective Division:Environmental Management
Objective Group:Terrestrial systems and management
Objective Field:Assessment and management of terrestrial ecosystems
UTAS Author:Powell, S (Dr Shane Powell)
UTAS Author:Bowman, JP (Associate Professor John Bowman)
ID Code:27002
Year Published:2003
Web of Science® Times Cited:91
Deposited By:Agricultural Science
Deposited On:2003-08-01
Last Modified:2004-04-21

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