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...
Published in: | PLoS ONE |
---|---|
Main Authors: | , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/2440/91814 https://doi.org/10.1371/journal.pone.0030138 |
id |
ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/91814 |
---|---|
record_format |
openpolar |
spelling |
ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/91814 2023-12-24T10:09:16+01:00 Biophysical factors affecting the distribution of demersal fish around the head of a submarine canyon off the Bonney Coast, South Australia Currie, D. McClatchie, S. Middleton, J. Nayar, S. Fenton, B. 2012 application/pdf http://hdl.handle.net/2440/91814 https://doi.org/10.1371/journal.pone.0030138 en eng Public Library of Science PLoS One, 2012; 7(1):e30138-1-e30138-16 1932-6203 http://hdl.handle.net/2440/91814 doi:10.1371/journal.pone.0030138 Nayar, S. [0000-0002-3730-6682] © 2012 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. http://dx.doi.org/10.1371/journal.pone.0030138 Models Biological Journal article 2012 ftunivadelaidedl https://doi.org/10.1371/journal.pone.0030138 2023-11-27T23:24:30Z 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). David R. Currie, Sam McClatchie, John F. Middleton, Sasi Nayar Article in Journal/Newspaper Antarc* Antarctic The University of Adelaide: Digital Library Antarctic Bonney ENVELOPE(162.417,162.417,-77.717,-77.717) Flinders ENVELOPE(-66.667,-66.667,-69.267,-69.267) Currie ENVELOPE(49.200,49.200,-67.700,-67.700) PLoS ONE 7 1 e30138 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Models Biological |
spellingShingle |
Models Biological Currie, D. McClatchie, S. Middleton, J. Nayar, S. Biophysical factors affecting the distribution of demersal fish around the head of a submarine canyon off the Bonney Coast, South Australia |
topic_facet |
Models Biological |
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). David R. Currie, Sam McClatchie, John F. Middleton, Sasi Nayar |
author2 |
Fenton, B. |
format |
Article in Journal/Newspaper |
author |
Currie, D. McClatchie, S. Middleton, J. Nayar, S. |
author_facet |
Currie, D. McClatchie, S. Middleton, J. Nayar, S. |
author_sort |
Currie, D. |
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://hdl.handle.net/2440/91814 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) ENVELOPE(49.200,49.200,-67.700,-67.700) |
geographic |
Antarctic Bonney Flinders Currie |
geographic_facet |
Antarctic Bonney Flinders Currie |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
http://dx.doi.org/10.1371/journal.pone.0030138 |
op_relation |
PLoS One, 2012; 7(1):e30138-1-e30138-16 1932-6203 http://hdl.handle.net/2440/91814 doi:10.1371/journal.pone.0030138 Nayar, S. [0000-0002-3730-6682] |
op_rights |
© 2012 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_doi |
https://doi.org/10.1371/journal.pone.0030138 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
1 |
container_start_page |
e30138 |
_version_ |
1786207089056546816 |