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<title>UTas ePrints - Bacterial community shifts in organically perturbed sediments</title>
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<meta content="Bissett, Andrew" name="eprints.creators_name" />
<meta content="Burke, Chris" name="eprints.creators_name" />
<meta content="Cook, Perran L.M." name="eprints.creators_name" />
<meta content="Bowman, John P." name="eprints.creators_name" />
<meta content="abissett@mpi-bremen.de" name="eprints.creators_id" />
<meta content="Chris.Burke@utas.edu.au" name="eprints.creators_id" />
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<meta content="john.bowman@utas.edu.au" name="eprints.creators_id" />
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<meta content="2007-02-01" name="eprints.datestamp" />
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<meta content="Bacterial community shifts in organically perturbed sediments" name="eprints.title" />
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<meta content="270307" name="eprints.subjects" />
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<meta content="sediment
eutrophication
microbiology
environmental impact
aquaculture
community structure
functional redundancy
microbial ecology
DGGE" name="eprints.keywords" />
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<meta content="Bacterial abundance, diversity and sediment function were investigated in organically perturbed sediments under Tasmanian salmon (Salmo salar) farms and adjacent reference sites. Bacterial numbers increased as farming and organic loading progressed through the farm stocking cycle and declined during the fallow period, although not to prestocking levels. Bacterial numbers ranged between approximately 2 x 10 [to the power of] 8 and 3 x 10 [to power of] 9 cells per gram of sediment and were higher at cage sites than reference sites. Microelectrode and respiration data also demonstrated a clear effect of organic loading on sediments. Denaturing gradient gel electrophoresis (DGGE) showed that bacterial communities shifted both in response to farm loading and its cessation. A seasonal effect on microbial communities was also evident. Although bacterial communities did shift again during the fallowing period, this shift was not necessarily a return to preloading communities. The complexity of community shifts may be affected by the vast functional redundancy of bacterial groups. All bacterial communities, including those at reference sites, were highly dynamic. Respiration studies of amended sediments indicated that fish farm sediments were at least as resilient and diverse as reference site communities. The results of this study indicate that the functional redundancy of highly complex bacterial communities contributes to their robustness. The relationship between diversity and stability in bacterial communities remains unclear and requires further investigation before an understanding of bacterial response to perturbation is possible." name="eprints.abstract" />
<meta content="2007-01-01" name="eprints.date" />
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<meta content="Environmental Microbiology" name="eprints.publication" />
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Almgren, T., Dryssen, D., and Fonselius, S. (1983) Determination
of alkalinity and total carbonate. In Methods of Seawater
Analysis. Kremling, K. (eds). Weinheim, Germany:
Verlag Chemie, pp. 99–123.
Anderson, M.J. (2003a) NPMANOVA: a FORTRAN computer
program for non-parametric multivariate analysis of variance
(for any two factor design) using permutation tests.
Auckland, New Zealand: Department of Statistics, University
of Auckland. http://www.stat.auckland.ac.nz/~mja/
Programs.htm.
Anderson, M.J. (2003b) XMATRIX: a FORTRAN computer
program for calculating design matrices for terms in
ANOVA designs in a linear model. Auckland, New Zealand:
Department of Statistics, University of Auckland. http://
www.stat.auckland.ac.nz/~mja/Programs.htm.
Anderson, M.J. (2003c) DISTLM v.2: a FORTRAN computer
program to calculate a distance-based multivariate analysis
for a linear model. Auckland, New Zealand: Department
of Statistics, University of Auckland. http://www.stat.
auckland.ac.nz/~mja/Programs.htm.
Anderson, M.J. (2003d) CAP: a FORTRAN computer
program for canonical analysis of principle cooradinates.
Auckland, New Zealand: Department of Statistics, University
of Auckland. http://www.stat.auckland.ac.nz/~mja/
Programs.htm.
Bissett, A., Bowman, J.P., and Burke, C. (2006) Bacterial
diversity in organically-enriched fish farm sediments.
FEMS Microbiol Ecol 55: 48–56.
Christensen, P.B., Rysgaard, S., Sloth, N.P., Dalsgaard, T.,
and Schwærter, S. (2000) Sediment mineralization, nutrient
fluxes, denitrification and dissimilatory nitrate reduction
to ammonium in an estuarine fjord with sea cage trout
farms. Aquat Microbial Ecol 21: 73–84.
Clarke, K.R., and Warwick, R.M. (2001) Change in Marine
Communities: an Approach to Statistical Analysis and
Interpretation. Plymouth, UK: PRIMER-E.
Dalsgaard, T., Nielsen, L.P., Brotas, V., Viaroli, P., Underwood,
G., et al. (2000) Protocol Handbook for NICE –
Nitrogen Cycling in Estuaries: A Project Under the EU
Research Programme: Marine Science and Technology
MAST III. Silkeborg, Denmark: National Environmental
Research Institute.
Epstein, S.S., and Rossel, J. (1995) Enumeration of sandy
sediment bacteria – search for optimal protocol. Mar Ecol
Prog Series 117: 289–298.
Felsing, M., Glenncross, B., and Telfer, T.C. (2005) Preliminary
study on the effects of exclusion of wild fauna from
aquaculture cages in a shallow marine environment.
Aquaculture 243: 159–174.
Ferris, M., Muyzer, G., and Ward, D. (1996) Denaturing gradient
gel electrophoresis profiles of 16S rRNA-defined
populations inhabiting a hot spring microbial mat
community. Appl Environ Microbiol 62: 340–346.
Findlay, R., Watling, L., and Mayer, L. (1995) Environmental
impact of salmon net-pen culture on marine benthic communities
in Maine: a case study. Estuaries 18: 145–179.
Girvan, M.S., Campbell, C.D., Killham, K., Prosser, J.I., and
Glover, L.A. (2005) Bacterial diversity promotes community
stability and functional resilience after perturbation.
Environ Microbiol 7: 301–313.
Gough, H.L., and Stahl, D. (2003) Optimization of direct cell
counting in sediment. J Microbiol Meth 52: 39–46.
Heip, C.H.R., Goosen, N.K., Herman, P.M.J., Kromkamp, J.,
Middelburg, J.J., and Soetaert, K. (1995) Production and
consumption of biological particles in temperate tidal
estuaries. Oceanography and Marine Biology – an Annual
Review, 33, 1–149.
La Rosa, T., Mirto, S., Marino, A., Alonzo, V., Maugeri, T.L.,
and Mazzola, A. (2001) Heterotrophic bacteria community
and pollution indicators of mussel-farm impact in the gulf of
Gaeta (Tyrrhenian Sea). Mar Environ Res 52: 301–321.
La Rosa, T., Mirto, S., Mazzola, A., and Maugeri, T.L.
(2004) Benthic microbial indicators of fish farm impact in
a coastal area of the Tyrrhenian Sea. Aquaculture 230:
153–167.
Lane, D.J. (1991) 16S/23S rRNA sequencing. In Nucleic Acid
Techniques in Bacterial Systematics. Stackbrandt, E., and
Goodfellow, M. (eds). New York, USA: John Wiley and
Sons, pp. 115–175.
Langenheder, S., Lindstrom, E.S., and Tranvik, L.J. (2006)
Structure and function of bacterial communities emerging
from different sources under identical conditions. Appl
Environ Microbiol 72: 212–220.
Legendre, P., and Anderson, M.J. (1999) Distance-based
redundancy analysis: testing multispecies responses in
multifactorial ecological experiments. Ecol Monographs
69: 1–24.
Macleod, C.K., Crawford, C.M., and Moltschaniwskyj, N.A.
(2004) Assessment of long term change in sediment condition
after organic enrichment: defining recovery. Marine
Pollution Bulletin 49: 79–88.
Middelburg, J.J., Duarte, C.M., and Gattuso, J.P. (2005) Respiration
in coastal benthic communities. In Respiration in
Aquatic Ecosystems. Williams, P.J. (eds). Oxford, UK:
Oxford University Press, pp. 206–224.
Morris, C.E., Bardin, M., Berg, O., Frey-Klett, P., Fromin, N.,
Girardin, H., et al. (2002) Microbial biodiversity:
approaches to experimental design and hypothesis testing
in primary scientific literature from 1975 to 1999. Microbiol
Mol Biol Rev 66: 592–616.
Müller, A.K., Westergaard, K., Christensen, S., and
Sørensen, S.J. (2002) The diversity and function of soil
microbial communities exposed to different disturbances.
Microbial Ecol 44: 49–58.
Noble, R.T., and Fuhrman, J.A. (1998) Use of Sybr Green I
for rapid epifluorescence counts of marine viruses and
bacteria. Aquat Microbial Ecol 14: 113–118.
Nordgren, A., Baath, E., and Soderstrom, B. (1988) Evaluation
of soil respiration characteristics to assess heavy
metal effects on soil microorganisms using glutamic acid
as a substrate. Soil Biol Biochem 20: 949–954.
Paerl, H.W. (1998) Structure and function of anthropogenically
altered microbial communities in coastal waters
[Review]. Current Opinion Microbiol 1: 296–302.
Pearson, T.H., and Rosenberg, R. (1978) Macrobenthic succession
in relation to organic enrichment and pollution of
the marine environment. In Oceanography and Marine
Biology: an Annual Review. Barnes, M., (ed.). Aberdeen,
UK: Aberdeen University Press, 16: pp. 229–311.
Rasmussen, H., and Jørgensen, B.B. (1992) Microelectrode
studies of seasonal oxygen-uptake in a coastal sediment –
role of molecular-diffusion. Mar Ecol Prog Ser 81: 289–303.
Revsbech, N.P. (1989) An oxygen microsensor with a guard
cathode. Limnol Oceanogr 34: 474.
Revsbech, N.P., and Jørgensen, B.B. (1986) Microelectrodes:
their use in microbial ecology. Adv Microb Ecol 9:
293–352.
Roy, R.N., Roy, L.N., Vogel, K.M., Porter-Moore, K.M.,
Pearson, T., Good, C.E., et al. (1993) The dissociation
constants of carbonic acid in seawater at salinities 5–45
and temperatures 0–45°C. Mar Chem 44: 249–267.
Rysgaard, S., Thamdrup, B., Risgaardpetersen, N., Fossing,
H., Berg, P., Bondo Christensen, P., and Dalsgaard, T.
(1998) Seasonal carbon and nutrient mineralization in
high-Arctic coastal marine sediment, Young Sound, Northeast
Greenland. Mar Ecol Prog Series 175: 261–276.
Savage, C., Elmgren, R., and Larsson, U. (2002) Effects of
sewerage-derived nutrients on an estuarine macrobenthic
community. Mar Ecol Prog Series 243: 67–82.
Torsvik, V., Sorheim, R., and Goksoyr, J. (1996) Total bacterial
diversity in soil and sediment communities – a review
[Review]. J Ind Microbiol 17: 170–178.
Vezzulli, L., Chelossi, E., Riccardi, G., and Fabiano, M.
(2002) Bacterial community structure and activity in
fish farm sediments of the Ligurian Sea (Western
Mediterranean). Aquac Int 10: 123–141.
Viles, C., and Sieracki, M. (1992) Measurement of marine
picoplankton cell size by using a cooled, charge-coupled
device camera with image-analyzed fluorescence
microscopy. Appl Environ Microbiol 58: 584–592.
Wildish, D.J., Hargrave, B.T., and Pohle, G. (2001) Costeffective
monitoring of organic enrichment resulting from
salmon mariculture. ICES J Mar Sci 58: 469–476." name="eprints.referencetext" />
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<meta content="Bacterial abundance, diversity and sediment function were investigated in organically perturbed sediments under Tasmanian salmon (Salmo salar) farms and adjacent reference sites. Bacterial numbers increased as farming and organic loading progressed through the farm stocking cycle and declined during the fallow period, although not to prestocking levels. Bacterial numbers ranged between approximately 2 x 10 [to the power of] 8 and 3 x 10 [to power of] 9 cells per gram of sediment and were higher at cage sites than reference sites. Microelectrode and respiration data also demonstrated a clear effect of organic loading on sediments. Denaturing gradient gel electrophoresis (DGGE) showed that bacterial communities shifted both in response to farm loading and its cessation. A seasonal effect on microbial communities was also evident. Although bacterial communities did shift again during the fallowing period, this shift was not necessarily a return to preloading communities. The complexity of community shifts may be affected by the vast functional redundancy of bacterial groups. All bacterial communities, including those at reference sites, were highly dynamic. Respiration studies of amended sediments indicated that fish farm sediments were at least as resilient and diverse as reference site communities. The results of this study indicate that the functional redundancy of highly complex bacterial communities contributes to their robustness. The relationship between diversity and stability in bacterial communities remains unclear and requires further investigation before an understanding of bacterial response to perturbation is possible." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Bacterial community shifts in organically perturbed sediments</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Bissett, Andrew</span> and <span class="person_name">Burke, Chris</span> and <span class="person_name">Cook, Perran L.M.</span> and <span class="person_name">Bowman, John P.</span> (2007) <xhtml:em>Bacterial community shifts in organically perturbed sediments.</xhtml:em> Environmental Microbiology, 9 (1). pp. 46-60. ISSN 1462-2912 (print); 1462-2920 (online)</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/676/1/j.1462-2920.2006.01110.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/676/1/j.1462-2920.2006.01110.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />255Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="687" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1111/j.1462-2920.2006.01110.x">http://dx.doi.org/10.1111/j.1462-2920.2006.01110.x</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Bacterial abundance, diversity and sediment function were investigated in organically perturbed sediments under Tasmanian salmon (Salmo salar) farms and adjacent reference sites. Bacterial numbers increased as farming and organic loading progressed through the farm stocking cycle and declined during the fallow period, although not to prestocking levels. Bacterial numbers ranged between approximately 2 x 10 [to the power of] 8 and 3 x 10 [to power of] 9 cells per gram of sediment and were higher at cage sites than reference sites. Microelectrode and respiration data also demonstrated a clear effect of organic loading on sediments. Denaturing gradient gel electrophoresis (DGGE) showed that bacterial communities shifted both in response to farm loading and its cessation. A seasonal effect on microbial communities was also evident. Although bacterial communities did shift again during the fallowing period, this shift was not necessarily a return to preloading communities. The complexity of community shifts may be affected by the vast functional redundancy of bacterial groups. All bacterial communities, including those at reference sites, were highly dynamic. Respiration studies of amended sediments indicated that fish farm sediments were at least as resilient and diverse as reference site communities. The results of this study indicate that the functional redundancy of highly complex bacterial communities contributes to their robustness. The relationship between diversity and stability in bacterial communities remains unclear and requires further investigation before an understanding of bacterial response to perturbation is possible.</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
eutrophication
microbiology
environmental impact
aquaculture
community structure
functional redundancy
microbial ecology
DGGE</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/270307.html">270000 Biological Sciences > 270300 Microbiology > 270307 Microbial Ecology</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">676</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">Assoc. Prof. John P. Bowman</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">01 Feb 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">08 Feb 2008 16:01</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=676;">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=676">item control page</a></p>
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