Biophysical Factors Affecting the Distribution of Demersal Fish around the Head of a Submarine Canyon Off the Bonney Coast, South Australia
We sampled the demersal fish community of the Bonney Canyon, South Australia at depths (100–1,500 m) and locations that are poorly known. Seventy-eight species of demersal fish were obtained from 12 depth-stratified trawls along, and to either side, of the central canyon axis. Distributional pattern...
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ftpubmed:oai:pubmedcentral.nih.gov:3256224 2023-05-15T13:35:08+02:00 Biophysical Factors Affecting the Distribution of Demersal Fish around the Head of a Submarine Canyon Off the Bonney Coast, South Australia Currie, David R. McClatchie, Sam Middleton, John F. Nayar, Sasi 2012-01-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3256224 http://www.ncbi.nlm.nih.gov/pubmed/22253907 https://doi.org/10.1371/journal.pone.0030138 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3256224 http://www.ncbi.nlm.nih.gov/pubmed/22253907 http://dx.doi.org/10.1371/journal.pone.0030138 Currie et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2012 ftpubmed https://doi.org/10.1371/journal.pone.0030138 2013-09-04T01:07:12Z We sampled the demersal fish community of the Bonney Canyon, South Australia at depths (100–1,500 m) and locations that are poorly known. Seventy-eight species of demersal fish were obtained from 12 depth-stratified trawls along, and to either side, of the central canyon axis. Distributional patterns in species richness and biomass were highly correlated. Three fish assemblage groupings, characterised by small suites of species with narrow depth distributions, were identified on the shelf, upper slope and mid slope. The assemblage groupings were largely explained by depth (ρw = 0.78). Compared to the depth gradient, canyon-related effects are weak or occur at spatial or temporal scales not sampled in this study. A conceptual physical model displayed features consistent with the depth zonational patterns in fish, and also indicated that canyon upwelling can occur. The depth zonation of the fish assemblage was associated with the depth distribution of water masses in the area. Notably, the mid-slope community (1,000 m) coincided with a layer of Antarctic Intermediate Water, the upper slope community (500 m) resided within the core of the Flinders Current, and the shelf community was located in a well-mixed layer of surface water (<450 m depth). Text Antarc* Antarctic PubMed Central (PMC) Antarctic Bonney ENVELOPE(162.417,162.417,-77.717,-77.717) Flinders ENVELOPE(-66.667,-66.667,-69.267,-69.267) PLoS ONE 7 1 e30138 |
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PubMed Central (PMC) |
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English |
topic |
Research Article |
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Research Article Currie, David R. McClatchie, Sam Middleton, John F. Nayar, Sasi Biophysical Factors Affecting the Distribution of Demersal Fish around the Head of a Submarine Canyon Off the Bonney Coast, South Australia |
topic_facet |
Research Article |
description |
We sampled the demersal fish community of the Bonney Canyon, South Australia at depths (100–1,500 m) and locations that are poorly known. Seventy-eight species of demersal fish were obtained from 12 depth-stratified trawls along, and to either side, of the central canyon axis. Distributional patterns in species richness and biomass were highly correlated. Three fish assemblage groupings, characterised by small suites of species with narrow depth distributions, were identified on the shelf, upper slope and mid slope. The assemblage groupings were largely explained by depth (ρw = 0.78). Compared to the depth gradient, canyon-related effects are weak or occur at spatial or temporal scales not sampled in this study. A conceptual physical model displayed features consistent with the depth zonational patterns in fish, and also indicated that canyon upwelling can occur. The depth zonation of the fish assemblage was associated with the depth distribution of water masses in the area. Notably, the mid-slope community (1,000 m) coincided with a layer of Antarctic Intermediate Water, the upper slope community (500 m) resided within the core of the Flinders Current, and the shelf community was located in a well-mixed layer of surface water (<450 m depth). |
format |
Text |
author |
Currie, David R. McClatchie, Sam Middleton, John F. Nayar, Sasi |
author_facet |
Currie, David R. McClatchie, Sam Middleton, John F. Nayar, Sasi |
author_sort |
Currie, David R. |
title |
Biophysical Factors Affecting the Distribution of Demersal Fish around the Head of a Submarine Canyon Off the Bonney Coast, South Australia |
title_short |
Biophysical Factors Affecting the Distribution of Demersal Fish around the Head of a Submarine Canyon Off the Bonney Coast, South Australia |
title_full |
Biophysical Factors Affecting the Distribution of Demersal Fish around the Head of a Submarine Canyon Off the Bonney Coast, South Australia |
title_fullStr |
Biophysical Factors Affecting the Distribution of Demersal Fish around the Head of a Submarine Canyon Off the Bonney Coast, South Australia |
title_full_unstemmed |
Biophysical Factors Affecting the Distribution of Demersal Fish around the Head of a Submarine Canyon Off the Bonney Coast, South Australia |
title_sort |
biophysical factors affecting the distribution of demersal fish around the head of a submarine canyon off the bonney coast, south australia |
publisher |
Public Library of Science |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3256224 http://www.ncbi.nlm.nih.gov/pubmed/22253907 https://doi.org/10.1371/journal.pone.0030138 |
long_lat |
ENVELOPE(162.417,162.417,-77.717,-77.717) ENVELOPE(-66.667,-66.667,-69.267,-69.267) |
geographic |
Antarctic Bonney Flinders |
geographic_facet |
Antarctic Bonney Flinders |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3256224 http://www.ncbi.nlm.nih.gov/pubmed/22253907 http://dx.doi.org/10.1371/journal.pone.0030138 |
op_rights |
Currie et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0030138 |
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PLoS ONE |
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7 |
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1 |
container_start_page |
e30138 |
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1766061410585935872 |