ARGOS Tracking Data of Fur Seals from Macquarie Island in 1997-1999
The populations of fur seals on Australia's two subantarctic islands were exterminated by uncontrolled sealing in the 19th century. Only in the latter half of the 20th century have populations commenced recovering. This project provides key information on the status and trends of recovering fur...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.edu.au/argos-tracking-data-1997-1999/1330236 https://doi.org/10.4225/15/5afcbb7405882 https://data.aad.gov.au/metadata/records/AAS_859_Fur_Seals_MI_1997_1999 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::1330236 2023-05-15T13:41:12+02:00 ARGOS Tracking Data of Fur Seals from Macquarie Island in 1997-1999 GOLDSWORTHY, SIMON (hasPrincipalInvestigator) GOLDSWORTHY, SIMON (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-54.09473; southlimit=-55.2021; westlimit=158.00781; eastLimit=159.62891; projection=WGS84 Temporal: From 1997-12-15 to 1999-01-28 https://researchdata.edu.au/argos-tracking-data-1997-1999/1330236 https://doi.org/10.4225/15/5afcbb7405882 https://data.aad.gov.au/metadata/records/AAS_859_Fur_Seals_MI_1997_1999 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.edu.au/argos-tracking-data-1997-1999/1330236 869716e9-eefe-48d4-8a54-5e4a1accc857 doi:10.4225/15/5afcbb7405882 AAS_859_Fur_Seals_MI_1997_1999 https://data.aad.gov.au/metadata/records/AAS_859_Fur_Seals_MI_1997_1999 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans RANGE CHANGES EARTH SCIENCE BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS POST-BREEDING PERIODS SEALS/SEA LIONS/WALRUSES BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES LACTATION TRACKING FORAGING ARGOS > ARGOS Data Collection and Position Location System SATELLITES GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN SOUTHERN OCEAN > MACQUARIE ISLAND dataset ftands https://doi.org/10.4225/15/5afcbb7405882 2021-12-06T23:23:55Z The populations of fur seals on Australia's two subantarctic islands were exterminated by uncontrolled sealing in the 19th century. Only in the latter half of the 20th century have populations commenced recovering. This project provides key information on the status and trends of recovering fur seal populations in the Southern Ocean, including information on the distribution of foraging effort, food and energy requirements, oceanographic determinants of demographic performance, ecological interactions with commercial fisheries, the extent, trends, processes and implications of hybridisation at Macquarie Island, and the status and trends in numbers of the threatened subantarctic fur seal. This dataset represents ARGOS tracking data of fur seals from Macquarie Island during 1997-1999. The tracking data are comprised of 28 data profiles. Taken from the abstract of the referenced paper: Antarctic Arctocephalus gazella and subantarctic Arctocephalus tropicalis fur seals breed sympatrically at Macquarie Island. The two species have different lactation strategies, the former rearing its pup in 4 months and the latter taking 10 months. The diet and at-sea foraging behaviour of these sympatric species was compared during the austral summer period when their pup rearing period overlapped. The prey of the two fur seal species was very similar, with fish dominating the diet. Themyctophid, Electrona subaspera, was the main prey item (93.9%) in all months of the study. There were no major differences in the diving behaviour between species. Both species foraged north of the island parallel to the Macquarie Ridge. Foraging activity was concentrated at two sites: (i) within 30 km north of the island; and (ii) at 60 km north. Most locations for overnight foraging trips were within 10 km of the colonies. The different lactation strategies of A. gazella and A. tropicalis allowed for flexibility in foraging behaviour. At Macquarie Island, the local marine environmental conditions have resulted in similar foraging behaviour for both species. Dataset Antarc* Antarctic Arctocephalus gazella Macquarie Island Southern Ocean walrus* Research Data Australia (Australian National Data Service - ANDS) Antarctic Austral Southern Ocean ENVELOPE(158.00781,159.62891,-54.09473,-55.2021) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans RANGE CHANGES EARTH SCIENCE BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS POST-BREEDING PERIODS SEALS/SEA LIONS/WALRUSES BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES LACTATION TRACKING FORAGING ARGOS > ARGOS Data Collection and Position Location System SATELLITES GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN SOUTHERN OCEAN > MACQUARIE ISLAND |
spellingShingle |
biota oceans RANGE CHANGES EARTH SCIENCE BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS POST-BREEDING PERIODS SEALS/SEA LIONS/WALRUSES BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES LACTATION TRACKING FORAGING ARGOS > ARGOS Data Collection and Position Location System SATELLITES GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN SOUTHERN OCEAN > MACQUARIE ISLAND ARGOS Tracking Data of Fur Seals from Macquarie Island in 1997-1999 |
topic_facet |
biota oceans RANGE CHANGES EARTH SCIENCE BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS POST-BREEDING PERIODS SEALS/SEA LIONS/WALRUSES BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES LACTATION TRACKING FORAGING ARGOS > ARGOS Data Collection and Position Location System SATELLITES GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN SOUTHERN OCEAN > MACQUARIE ISLAND |
description |
The populations of fur seals on Australia's two subantarctic islands were exterminated by uncontrolled sealing in the 19th century. Only in the latter half of the 20th century have populations commenced recovering. This project provides key information on the status and trends of recovering fur seal populations in the Southern Ocean, including information on the distribution of foraging effort, food and energy requirements, oceanographic determinants of demographic performance, ecological interactions with commercial fisheries, the extent, trends, processes and implications of hybridisation at Macquarie Island, and the status and trends in numbers of the threatened subantarctic fur seal. This dataset represents ARGOS tracking data of fur seals from Macquarie Island during 1997-1999. The tracking data are comprised of 28 data profiles. Taken from the abstract of the referenced paper: Antarctic Arctocephalus gazella and subantarctic Arctocephalus tropicalis fur seals breed sympatrically at Macquarie Island. The two species have different lactation strategies, the former rearing its pup in 4 months and the latter taking 10 months. The diet and at-sea foraging behaviour of these sympatric species was compared during the austral summer period when their pup rearing period overlapped. The prey of the two fur seal species was very similar, with fish dominating the diet. Themyctophid, Electrona subaspera, was the main prey item (93.9%) in all months of the study. There were no major differences in the diving behaviour between species. Both species foraged north of the island parallel to the Macquarie Ridge. Foraging activity was concentrated at two sites: (i) within 30 km north of the island; and (ii) at 60 km north. Most locations for overnight foraging trips were within 10 km of the colonies. The different lactation strategies of A. gazella and A. tropicalis allowed for flexibility in foraging behaviour. At Macquarie Island, the local marine environmental conditions have resulted in similar foraging behaviour for both species. |
author2 |
GOLDSWORTHY, SIMON (hasPrincipalInvestigator) GOLDSWORTHY, SIMON (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
ARGOS Tracking Data of Fur Seals from Macquarie Island in 1997-1999 |
title_short |
ARGOS Tracking Data of Fur Seals from Macquarie Island in 1997-1999 |
title_full |
ARGOS Tracking Data of Fur Seals from Macquarie Island in 1997-1999 |
title_fullStr |
ARGOS Tracking Data of Fur Seals from Macquarie Island in 1997-1999 |
title_full_unstemmed |
ARGOS Tracking Data of Fur Seals from Macquarie Island in 1997-1999 |
title_sort |
argos tracking data of fur seals from macquarie island in 1997-1999 |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.edu.au/argos-tracking-data-1997-1999/1330236 https://doi.org/10.4225/15/5afcbb7405882 https://data.aad.gov.au/metadata/records/AAS_859_Fur_Seals_MI_1997_1999 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-54.09473; southlimit=-55.2021; westlimit=158.00781; eastLimit=159.62891; projection=WGS84 Temporal: From 1997-12-15 to 1999-01-28 |
long_lat |
ENVELOPE(158.00781,159.62891,-54.09473,-55.2021) |
geographic |
Antarctic Austral Southern Ocean |
geographic_facet |
Antarctic Austral Southern Ocean |
genre |
Antarc* Antarctic Arctocephalus gazella Macquarie Island Southern Ocean walrus* |
genre_facet |
Antarc* Antarctic Arctocephalus gazella Macquarie Island Southern Ocean walrus* |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.edu.au/argos-tracking-data-1997-1999/1330236 869716e9-eefe-48d4-8a54-5e4a1accc857 doi:10.4225/15/5afcbb7405882 AAS_859_Fur_Seals_MI_1997_1999 https://data.aad.gov.au/metadata/records/AAS_859_Fur_Seals_MI_1997_1999 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/5afcbb7405882 |
_version_ |
1766146972523167744 |