Distribution of foraging effort of Antarctic fur seals in relation to oceanographic features around Heard and Kerguelen Islands
Progress Code: completed Metadata record for data from ASAC Project 1251 See the link below for public details on this project. --- Public Summary from Project --- The aim of this study is to develop spatial GIS models of fur seal foraging density over the Kerguelen Plateau that will enable a rapid...
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ftands:oai:ands.org.au::2821893 2024-09-15T17:46:18+00:00 Distribution of foraging effort of Antarctic fur seals in relation to oceanographic features around Heard and Kerguelen Islands AADC (owner) AADC, DATA OFFICER (distributor) AADC, DATA OFFICER (custodian) AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith) Australian Antarctic Data Centre (publisher) Australian Antarctic Division (sponsor) Goldsworthy, S. (originator) Spatial: westlimit=73.38; southlimit=-53.028; eastlimit=73.39; northlimit=-53.018 Temporal: From 2000-11-30 to 2001-03-15 https://researchdata.edu.au/distribution-foraging-effort-kerguelen-islands/2821893 unknown Australian Ocean Data Network https://researchdata.edu.au/distribution-foraging-effort-kerguelen-islands/2821893 ASAC_1251 AU/AADC > Australian Antarctic Data Centre, Australia biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS ANTARCTIC FUR SEALS DIET FORAGING SATELLITE TRACKING ARGOS > ARGOS Data Collection and Position Location System SATELLITES AMD/AU CEOS AMD OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS dataset ftands 2024-08-06T01:58:58Z Progress Code: completed Metadata record for data from ASAC Project 1251 See the link below for public details on this project. --- Public Summary from Project --- The aim of this study is to develop spatial GIS models of fur seal foraging density over the Kerguelen Plateau that will enable a rapid assessment method for identifying areas of high conservation value for Marine Protected Area planning and management. These models will be based on data on fur seal foraging densities in the HIMI region, and oceanographic data on bathymetry, sea-surface temperature and ocean colour (primary productivity). From the abstract of the referenced paper: We investigated the spatial and temporal distribution of foraging effort by lactating Antarctic fur seals Arctocephalus gazella at Heard Island using satellite telemetry and time-depth recorders. Two principal diving types were identified: 'deep' dives averaging 48.6 m, and 'shallow' dives averaging 8.6 m. Discriminant function analyses were used to assign dives based on their depth and duration. Generalised linear mixed-effects models of night dives (greater than 80% of all dives) indicated both spatial and temporal effects on the distribution of deep and shallow dives. Deep dives were more common in the deeper shelf waters of the Kerguelen Plateau, and these dives predominantly occurred after sunset and before sunrise. In contrast, shallow dives were more common in slope waters on the southeastern margin of the Kerguelen Plateau in the hours either side of local midnight. We suggest that these 2 distinct diving types reflect the targeting of channichthyid (deep dives) and myctophid (shallow dives ) fish, and are indicative of spatial and temporal differences in the availability of these 2 important prey groups. We also identified 3 distinct behavioural dive groups (based on multidimensional scaling of 19 diving and foraging trip parameters) that also differed in their spatial distribution and in their relative importance of deep and shallow dives. The present study ... Dataset Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Heard Island Kerguelen Islands McDonald Islands Southern Ocean Research Data Australia (Australian National Data Service - ANDS) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS ANTARCTIC FUR SEALS DIET FORAGING SATELLITE TRACKING ARGOS > ARGOS Data Collection and Position Location System SATELLITES AMD/AU CEOS AMD OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS |
spellingShingle |
biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS ANTARCTIC FUR SEALS DIET FORAGING SATELLITE TRACKING ARGOS > ARGOS Data Collection and Position Location System SATELLITES AMD/AU CEOS AMD OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS Distribution of foraging effort of Antarctic fur seals in relation to oceanographic features around Heard and Kerguelen Islands |
topic_facet |
biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS ANTARCTIC FUR SEALS DIET FORAGING SATELLITE TRACKING ARGOS > ARGOS Data Collection and Position Location System SATELLITES AMD/AU CEOS AMD OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS |
description |
Progress Code: completed Metadata record for data from ASAC Project 1251 See the link below for public details on this project. --- Public Summary from Project --- The aim of this study is to develop spatial GIS models of fur seal foraging density over the Kerguelen Plateau that will enable a rapid assessment method for identifying areas of high conservation value for Marine Protected Area planning and management. These models will be based on data on fur seal foraging densities in the HIMI region, and oceanographic data on bathymetry, sea-surface temperature and ocean colour (primary productivity). From the abstract of the referenced paper: We investigated the spatial and temporal distribution of foraging effort by lactating Antarctic fur seals Arctocephalus gazella at Heard Island using satellite telemetry and time-depth recorders. Two principal diving types were identified: 'deep' dives averaging 48.6 m, and 'shallow' dives averaging 8.6 m. Discriminant function analyses were used to assign dives based on their depth and duration. Generalised linear mixed-effects models of night dives (greater than 80% of all dives) indicated both spatial and temporal effects on the distribution of deep and shallow dives. Deep dives were more common in the deeper shelf waters of the Kerguelen Plateau, and these dives predominantly occurred after sunset and before sunrise. In contrast, shallow dives were more common in slope waters on the southeastern margin of the Kerguelen Plateau in the hours either side of local midnight. We suggest that these 2 distinct diving types reflect the targeting of channichthyid (deep dives) and myctophid (shallow dives ) fish, and are indicative of spatial and temporal differences in the availability of these 2 important prey groups. We also identified 3 distinct behavioural dive groups (based on multidimensional scaling of 19 diving and foraging trip parameters) that also differed in their spatial distribution and in their relative importance of deep and shallow dives. The present study ... |
author2 |
AADC (owner) AADC, DATA OFFICER (distributor) AADC, DATA OFFICER (custodian) AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith) Australian Antarctic Data Centre (publisher) Australian Antarctic Division (sponsor) Goldsworthy, S. (originator) |
format |
Dataset |
title |
Distribution of foraging effort of Antarctic fur seals in relation to oceanographic features around Heard and Kerguelen Islands |
title_short |
Distribution of foraging effort of Antarctic fur seals in relation to oceanographic features around Heard and Kerguelen Islands |
title_full |
Distribution of foraging effort of Antarctic fur seals in relation to oceanographic features around Heard and Kerguelen Islands |
title_fullStr |
Distribution of foraging effort of Antarctic fur seals in relation to oceanographic features around Heard and Kerguelen Islands |
title_full_unstemmed |
Distribution of foraging effort of Antarctic fur seals in relation to oceanographic features around Heard and Kerguelen Islands |
title_sort |
distribution of foraging effort of antarctic fur seals in relation to oceanographic features around heard and kerguelen islands |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/distribution-foraging-effort-kerguelen-islands/2821893 |
op_coverage |
Spatial: westlimit=73.38; southlimit=-53.028; eastlimit=73.39; northlimit=-53.018 Temporal: From 2000-11-30 to 2001-03-15 |
genre |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Heard Island Kerguelen Islands McDonald Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Heard Island Kerguelen Islands McDonald Islands Southern Ocean |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/distribution-foraging-effort-kerguelen-islands/2821893 ASAC_1251 |
_version_ |
1810494312907014144 |