Bacterial community shifts in organically perturbed sediments
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...
Published in: | Environmental Microbiology |
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Blackwell Publishing Ltd
2007
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Online Access: | https://doi.org/10.1111/j.1462-2920.2006.01110.x http://www.ncbi.nlm.nih.gov/pubmed/17227411 http://ecite.utas.edu.au/32749 |
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ftunivtasecite:oai:ecite.utas.edu.au:32749 2023-05-15T18:09:55+02:00 Bacterial community shifts in organically perturbed sediments Bissett, AP Burke, CM Cook, PLM Bowman, JP 2007 https://doi.org/10.1111/j.1462-2920.2006.01110.x http://www.ncbi.nlm.nih.gov/pubmed/17227411 http://ecite.utas.edu.au/32749 en eng Blackwell Publishing Ltd http://dx.doi.org/10.1111/j.1462-2920.2006.01110.x Bissett, AP and Burke, CM and Cook, PLM and Bowman, JP, Bacterial community shifts in organically perturbed sediments, Environmental Microbiology, 9, (1) pp. 46-60. ISSN 1462-2912 (2007) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/17227411 http://ecite.utas.edu.au/32749 Biological Sciences Microbiology Microbial Ecology Refereed Article PeerReviewed 2007 ftunivtasecite https://doi.org/10.1111/j.1462-2920.2006.01110.x 2019-12-13T21:12:00Z 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 2 108 and 3 109 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. 2006 The Authors. Article in Journal/Newspaper Salmo salar eCite UTAS (University of Tasmania) Environmental Microbiology 9 1 46 60 |
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eCite UTAS (University of Tasmania) |
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English |
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Biological Sciences Microbiology Microbial Ecology |
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Biological Sciences Microbiology Microbial Ecology Bissett, AP Burke, CM Cook, PLM Bowman, JP Bacterial community shifts in organically perturbed sediments |
topic_facet |
Biological Sciences Microbiology Microbial Ecology |
description |
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 2 108 and 3 109 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. 2006 The Authors. |
format |
Article in Journal/Newspaper |
author |
Bissett, AP Burke, CM Cook, PLM Bowman, JP |
author_facet |
Bissett, AP Burke, CM Cook, PLM Bowman, JP |
author_sort |
Bissett, AP |
title |
Bacterial community shifts in organically perturbed sediments |
title_short |
Bacterial community shifts in organically perturbed sediments |
title_full |
Bacterial community shifts in organically perturbed sediments |
title_fullStr |
Bacterial community shifts in organically perturbed sediments |
title_full_unstemmed |
Bacterial community shifts in organically perturbed sediments |
title_sort |
bacterial community shifts in organically perturbed sediments |
publisher |
Blackwell Publishing Ltd |
publishDate |
2007 |
url |
https://doi.org/10.1111/j.1462-2920.2006.01110.x http://www.ncbi.nlm.nih.gov/pubmed/17227411 http://ecite.utas.edu.au/32749 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_relation |
http://dx.doi.org/10.1111/j.1462-2920.2006.01110.x Bissett, AP and Burke, CM and Cook, PLM and Bowman, JP, Bacterial community shifts in organically perturbed sediments, Environmental Microbiology, 9, (1) pp. 46-60. ISSN 1462-2912 (2007) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/17227411 http://ecite.utas.edu.au/32749 |
op_doi |
https://doi.org/10.1111/j.1462-2920.2006.01110.x |
container_title |
Environmental Microbiology |
container_volume |
9 |
container_issue |
1 |
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46 |
op_container_end_page |
60 |
_version_ |
1766182616562663424 |