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Multiple approaches to microbial source tracking in tropical northern Australia

Neave, Matthew, Luter, Heidi, Padovan, Anna, Townsend, Simon, Schobben, Xavier and Gibb, Karen (2014). Multiple approaches to microbial source tracking in tropical northern Australia. Microbiology Open,3(6):860-874.

Document type: Journal Article
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IRMA ID 84376995xPUB96
Title Multiple approaches to microbial source tracking in tropical northern Australia
Author Neave, Matthew
Luter, Heidi
Padovan, Anna
Townsend, Simon
Schobben, Xavier
Gibb, Karen
Journal Name Microbiology Open
Publication Date 2014
Volume Number 3
Issue Number 6
ISSN 2045-8827   (check CDU catalogue open catalogue search in new window)
Start Page 860
End Page 874
Total Pages 15
Place of Publication United States of America
Publisher John Wiley & Sons Ltd.
HERDC Category C1 - Journal Article (DIISR)
Abstract Microbial source tracking is an area of research in which multiple approaches are used to identify the sources of elevated bacterial concentrations in recreational lakes and beaches. At our study location in Darwin, northern Australia, water quality in the harbor is generally good, however dry-season beach closures due to elevated Escherichia coli and enterococci counts are a cause for concern. The sources of these high bacteria counts are currently unknown. To address this, we sampled sewage outfalls, other potential inputs, such as urban rivers and drains, and surrounding beaches, and used genetic fingerprints from E. coli and enterococci communities, fecal markers and 454 pyrosequencing to track contamination sources. A sewage effluent outfall (Larrakeyah discharge) was a source of bacteria, including fecal bacteria that impacted nearby beaches. Two other treated effluent discharges did not appear to influence sites other than those directly adjacent. Several beaches contained fecal indicator bacteria that likely originated from urban rivers and creeks within the catchment. Generally, connectivity between the sites was observed within distinct geographical locations and it appeared that most of the bacterial contamination on Darwin beaches was confined to local sources.
Keywords 454 Pyrosequencing
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Additional Notes This is an Open Access article distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Description for Link Link to CC Attribution 3.0 License

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