Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic-topographic associations at Macquarie Island, Southern Ocean
Lanternfishes, which are important prey for demersal and diving predators at Macquarie Island in the Southern Ocean, have spatial patterns of distribution over the Macquarie Ridge that suggest biomass is enhanced where the Subantarctic Front (SAF) interacts with a break in the topography of the Ridg...
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Language: | English |
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2012
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Online Access: | https://espace.library.uq.edu.au/view/UQ:269638 |
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:269638 2023-05-15T17:09:54+02:00 Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic-topographic associations at Macquarie Island, Southern Ocean Flynn, A. J. Williams, A. 2012-01-01 https://espace.library.uq.edu.au/view/UQ:269638 eng eng CSIRO Publishing doi:10.1071/MF11163 issn:1323-1650 issn:1448-6059 Climate change Lanternfishes Macquarie Island Macquarie Ridge 1104 Aquatic Science 1105 Ecology Evolution Behavior and Systematics 1910 Oceanography 2303 Ecology Journal Article 2012 ftunivqespace https://doi.org/10.1071/MF11163 2020-08-05T02:20:23Z Lanternfishes, which are important prey for demersal and diving predators at Macquarie Island in the Southern Ocean, have spatial patterns of distribution over the Macquarie Ridge that suggest biomass is enhanced where the Subantarctic Front (SAF) interacts with a break in the topography of the Ridge (the 'Ridge Gap'). The summertime lanternfish assemblage, documented here for the first time, comprised 23 taxa, dominated by Krefftichthys anderssoni and Gymnoscopelus braueri. Mean lanternfish biomass was highest (3.13g 1000m ) in the Ridge Gap habitat. Lowest mean biomass (0.71g 1000m ) was recorded up-current of the SAF over the Abyssal Plain and intermediate biomass (1.26g 1000m ) was recorded over the Macquarie Ridge. At Ridge Gap, a high abundance of K. anderssoni was recorded in the shallowest stratum (0-250m) during the day. We hypothesised that the oceanographictopographic interaction between the SAF and Ridge Gap creates eddy systems and productivity fronts that passively entrain and/or actively attract lanternfishes to the Ridge Gap area. This oceanographictopographic interaction depends on the spatial stability of the SAF in relation to the Macquarie Ridge and Ridge Gap and is vulnerable to climate-mediated change that may have flow-on effects to predators with commercial and conservation significance. Article in Journal/Newspaper Macquarie Island Southern Ocean The University of Queensland: UQ eSpace Southern Ocean Marine and Freshwater Research 63 3 251 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Climate change Lanternfishes Macquarie Island Macquarie Ridge 1104 Aquatic Science 1105 Ecology Evolution Behavior and Systematics 1910 Oceanography 2303 Ecology |
spellingShingle |
Climate change Lanternfishes Macquarie Island Macquarie Ridge 1104 Aquatic Science 1105 Ecology Evolution Behavior and Systematics 1910 Oceanography 2303 Ecology Flynn, A. J. Williams, A. Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic-topographic associations at Macquarie Island, Southern Ocean |
topic_facet |
Climate change Lanternfishes Macquarie Island Macquarie Ridge 1104 Aquatic Science 1105 Ecology Evolution Behavior and Systematics 1910 Oceanography 2303 Ecology |
description |
Lanternfishes, which are important prey for demersal and diving predators at Macquarie Island in the Southern Ocean, have spatial patterns of distribution over the Macquarie Ridge that suggest biomass is enhanced where the Subantarctic Front (SAF) interacts with a break in the topography of the Ridge (the 'Ridge Gap'). The summertime lanternfish assemblage, documented here for the first time, comprised 23 taxa, dominated by Krefftichthys anderssoni and Gymnoscopelus braueri. Mean lanternfish biomass was highest (3.13g 1000m ) in the Ridge Gap habitat. Lowest mean biomass (0.71g 1000m ) was recorded up-current of the SAF over the Abyssal Plain and intermediate biomass (1.26g 1000m ) was recorded over the Macquarie Ridge. At Ridge Gap, a high abundance of K. anderssoni was recorded in the shallowest stratum (0-250m) during the day. We hypothesised that the oceanographictopographic interaction between the SAF and Ridge Gap creates eddy systems and productivity fronts that passively entrain and/or actively attract lanternfishes to the Ridge Gap area. This oceanographictopographic interaction depends on the spatial stability of the SAF in relation to the Macquarie Ridge and Ridge Gap and is vulnerable to climate-mediated change that may have flow-on effects to predators with commercial and conservation significance. |
format |
Article in Journal/Newspaper |
author |
Flynn, A. J. Williams, A. |
author_facet |
Flynn, A. J. Williams, A. |
author_sort |
Flynn, A. J. |
title |
Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic-topographic associations at Macquarie Island, Southern Ocean |
title_short |
Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic-topographic associations at Macquarie Island, Southern Ocean |
title_full |
Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic-topographic associations at Macquarie Island, Southern Ocean |
title_fullStr |
Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic-topographic associations at Macquarie Island, Southern Ocean |
title_full_unstemmed |
Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic-topographic associations at Macquarie Island, Southern Ocean |
title_sort |
lanternfish (pisces: myctophidae) biomass distribution and oceanographic-topographic associations at macquarie island, southern ocean |
publisher |
CSIRO Publishing |
publishDate |
2012 |
url |
https://espace.library.uq.edu.au/view/UQ:269638 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Macquarie Island Southern Ocean |
genre_facet |
Macquarie Island Southern Ocean |
op_relation |
doi:10.1071/MF11163 issn:1323-1650 issn:1448-6059 |
op_doi |
https://doi.org/10.1071/MF11163 |
container_title |
Marine and Freshwater Research |
container_volume |
63 |
container_issue |
3 |
container_start_page |
251 |
_version_ |
1766066272976502784 |