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<meta content="Bissett, Andrew" name="eprints.creators_name" />
<meta content="Bowman, John P." name="eprints.creators_name" />
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<meta content="Bacterial diversity in organically-enriched fish farm sediments" name="eprints.title" />
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<meta content="The bacterial diversity and community structure within both organically enriched and adjacent, unimpacted, near-shore marine sediments at two fish farms in southern Tasmania, Australia, was examined using 16S rRNA gene clone library construction and analysis. Sediments at both caged and reference sites at both farms showed a very high level of microbial diversity. Over 900 clones were analysed and grouped into 631 unique phylotypes. Reference sites were dominated by Delta- and Gammaproteobacteria and the Cytophaga-Flavobacteria-Bacteroides group. Cage site sediments were also dominated by these phylotypes, as well as members of the Alpha- and Epsilonproteobacteria. Diversity and coverage indices indicated that the actual diversity of the sediments was much greater than that detected, despite a large sampling effort. All libraries were shown to be statistically different from one another (P<0.05). Many phylotypes did not group with cultured bacteria, but grouped with other environmental clones from a wide array of marine benthic environments. Diversity and evenness indices suggested that although both parameters changed after farming, diverse communities were present in all sediments. The response of the microbial community to organic load suggested that random, rather than predictable, succession events determine community composition and diversity, and that sediment type may influence bacterial community and sediment response to organic perturbation.
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<meta content="2006-01" name="eprints.date" />
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<meta content="The bacterial diversity and community structure within both organically enriched and adjacent, unimpacted, near-shore marine sediments at two fish farms in southern Tasmania, Australia, was examined using 16S rRNA gene clone library construction and analysis. Sediments at both caged and reference sites at both farms showed a very high level of microbial diversity. Over 900 clones were analysed and grouped into 631 unique phylotypes. Reference sites were dominated by Delta- and Gammaproteobacteria and the Cytophaga-Flavobacteria-Bacteroides group. Cage site sediments were also dominated by these phylotypes, as well as members of the Alpha- and Epsilonproteobacteria. Diversity and coverage indices indicated that the actual diversity of the sediments was much greater than that detected, despite a large sampling effort. All libraries were shown to be statistically different from one another (P<0.05). Many phylotypes did not group with cultured bacteria, but grouped with other environmental clones from a wide array of marine benthic environments. Diversity and evenness indices suggested that although both parameters changed after farming, diverse communities were present in all sediments. The response of the microbial community to organic load suggested that random, rather than predictable, succession events determine community composition and diversity, and that sediment type may influence bacterial community and sediment response to organic perturbation.
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<h1 class="ep_tm_pagetitle">Bacterial diversity in organically-enriched fish farm sediments</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Bissett, Andrew</span> and <span class="person_name">Bowman, John P.</span> and <span class="person_name">Burke, Chris</span> (2006) <xhtml:em>Bacterial diversity in organically-enriched fish farm sediments.</xhtml:em> FEMS Microbiology Ecology, 55 (1). pp. 48-56. ISSN 0168-6496</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/1901/1/Bacterial_Diversity_fishfarms06.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1901/1/Bacterial_Diversity_fishfarms06.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />123Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1111/j.1574-6941.2005.00012.x">http://dx.doi.org/10.1111/j.1574-6941.2005.00012.x</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The bacterial diversity and community structure within both organically enriched and adjacent, unimpacted, near-shore marine sediments at two fish farms in southern Tasmania, Australia, was examined using 16S rRNA gene clone library construction and analysis. Sediments at both caged and reference sites at both farms showed a very high level of microbial diversity. Over 900 clones were analysed and grouped into 631 unique phylotypes. Reference sites were dominated by Delta- and Gammaproteobacteria and the Cytophaga-Flavobacteria-Bacteroides group. Cage site sediments were also dominated by these phylotypes, as well as members of the Alpha- and Epsilonproteobacteria. Diversity and coverage indices indicated that the actual diversity of the sediments was much greater than that detected, despite a large sampling effort. All libraries were shown to be statistically different from one another (P<0.05). Many phylotypes did not group with cultured bacteria, but grouped with other environmental clones from a wide array of marine benthic environments. Diversity and evenness indices suggested that although both parameters changed after farming, diverse communities were present in all sediments. The response of the microbial community to organic load suggested that random, rather than predictable, succession events determine community composition and diversity, and that sediment type may influence bacterial community and sediment response to organic perturbation.
</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The definitive version is available at www.blackwell-synergy.com</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">sediment microbiology, fish farm</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/300703.html">300000 Agricultural, Veterinary and Environmental Sciences > 300700 Fisheries Sciences > 300703 Aquaculture</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270307.html">270000 Biological Sciences > 270300 Microbiology > 270307 Microbial Ecology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1901</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Chris Burke</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">12 Sep 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1901;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=1901">item control page</a></p>
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