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...
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ftunivtasmania:oai:eprints.utas.edu.au:1902 2023-05-15T18:09:55+02:00 Bacterial community shifts in organically perturbed sediments Bissett, A Burke, C Cook, PLM Bowman, JP 2007-01 application/pdf https://eprints.utas.edu.au/1902/ https://eprints.utas.edu.au/1902/1/j.1462-2920.2006.01110.pdf https://doi.org/10.1111/j.1462-2920.2006.01110.x en eng https://eprints.utas.edu.au/1902/1/j.1462-2920.2006.01110.pdf Bissett, A, Burke, C, Cook, PLM and Bowman, JP 2007 , 'Bacterial community shifts in organically perturbed sediments' , Environmental Microbiology, vol. 9, no. 1 , pp. 46-60 , doi:10.1111/j.1462-2920.2006.01110.x <http://dx.doi.org/10.1111/j.1462-2920.2006.01110.x>. cc_utas 270702 Marine and Estuarine Ecology (incl. Marine Ichthyology) 300703 Aquaculture 270307 Microbial Ecology sediment microbiology fish farm Article PeerReviewed 2007 ftunivtasmania https://doi.org/10.1111/j.1462-2920.2006.01110.x 2020-05-30T07:15:39Z 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 the 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. Article in Journal/Newspaper Salmo salar University of Tasmania: UTas ePrints Environmental Microbiology 9 1 46 60 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology) 300703 Aquaculture 270307 Microbial Ecology sediment microbiology fish farm |
spellingShingle |
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology) 300703 Aquaculture 270307 Microbial Ecology sediment microbiology fish farm Bissett, A Burke, C Cook, PLM Bowman, JP Bacterial community shifts in organically perturbed sediments |
topic_facet |
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology) 300703 Aquaculture 270307 Microbial Ecology sediment microbiology fish farm |
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 x 10 to the power of 8 and 3 x 10 to the 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. |
format |
Article in Journal/Newspaper |
author |
Bissett, A Burke, C Cook, PLM Bowman, JP |
author_facet |
Bissett, A Burke, C Cook, PLM Bowman, JP |
author_sort |
Bissett, A |
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 |
publishDate |
2007 |
url |
https://eprints.utas.edu.au/1902/ https://eprints.utas.edu.au/1902/1/j.1462-2920.2006.01110.pdf https://doi.org/10.1111/j.1462-2920.2006.01110.x |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_relation |
https://eprints.utas.edu.au/1902/1/j.1462-2920.2006.01110.pdf Bissett, A, Burke, C, Cook, PLM and Bowman, JP 2007 , 'Bacterial community shifts in organically perturbed sediments' , Environmental Microbiology, vol. 9, no. 1 , pp. 46-60 , doi:10.1111/j.1462-2920.2006.01110.x <http://dx.doi.org/10.1111/j.1462-2920.2006.01110.x>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.1111/j.1462-2920.2006.01110.x |
container_title |
Environmental Microbiology |
container_volume |
9 |
container_issue |
1 |
container_start_page |
46 |
op_container_end_page |
60 |
_version_ |
1766182622171496448 |