Data

Weddell_Seal_Underwater_Sounds

Australian Antarctic Division
Emma, S., Terhune, JM., Miller, BS., Van Den Hoff, J. ; EMMA, SIMMONDS ; TERHUNE, JOHN MOORE ; MILLER, BRIAN SETH ; VAN DEN HOFF, JOHN
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/AAS_5097_Weddell_Seal_Underwater_Sounds&rft.title=Weddell_Seal_Underwater_Sounds&rft.identifier=http://data.aad.gov.au/metadata/AAS_5097_Weddell_Seal_Underwater_Sounds&rft.publisher=Australian Antarctic Data Centre&rft.description=Weddell seal (Leptonychotes weddellii) and leopard seal (Hydrurga leptonyx) vocalizations were collected using passive acoustic monitoring beneath landfast ice and open water, 5.6 km seaward from Davis Station, East Antarctica. Eight-minute recordings were manually sampled at 1 h intervals over 24 h every 10 days from 24 July 2021 to 30 January 2022. The study showed that call counts for Weddell seals were highest in the winter, lower during the breeding season, and almost absent in the summer. This change coincided with the occurrence of open water over the recording site, a progressive shift in Weddell seal behavior from foraging to aggregating in local fjords for the annual pupping, mating, and molting periods, and an increase in leopard seal—a potential predator—call detection rates. Leopard seal calls were primarily detected in December after the landfast ice broke up. In winter, Weddell seal calling counts were highest at dusk and night, and lowest during the day when the seals may have been feeding. Neither species exhibited a diel calling pattern once there were 24 h of sunlight. Seal locations were associated with the presence and absence of landfast ice, and call detections were influenced by their distances to the recorder.Progress Code: completedStatement: The raw data was downloaded from the mooring following its retrieval and return to Australia. A preliminary inspection of the data suggested that the instrument has functioned as expected and recorded data over the full time of its deployment. &rft.creator=Emma, S., Terhune, JM., Miller, BS., Van Den Hoff, J. &rft.creator=EMMA, SIMMONDS &rft.creator=TERHUNE, JOHN MOORE &rft.creator=MILLER, BRIAN SETH &rft.creator=VAN DEN HOFF, JOHN &rft.date=2026&rft.coverage=westlimit=115; southlimit=-68.57639; eastlimit=156; northlimit=77.96889&rft.coverage=westlimit=115; southlimit=-68.57639; eastlimit=156; northlimit=77.96889&rft_rights=These data are publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_5097_Weddell_Seal_Underwater_Sounds when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=biota&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS&rft_subject=PASSIVE ACOUSTIC MONITORING&rft_subject=PHOCID SEALS&rft_subject=Passive Acoustic Recorder&rft_subject=MOORINGS&rft_subject=CEOS&rft_subject=AMD&rft_subject=AMD/AU&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=CONTINENT > ANTARCTICA > DAVIS STATION&rft_subject=CONTINENT > ANTARCTICA&rft_subject=CONTINENT > ANTARCTICA > Prydz Bay&rft.type=dataset&rft.language=English Access the data
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CC-BY

Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are publicly available for download from the provided URL.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_5097_Weddell_Seal_Underwater_Sounds when using these data.

This metadata record is publicly available.

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Full description

Weddell seal (Leptonychotes weddellii) and leopard seal (Hydrurga leptonyx) vocalizations were collected using passive acoustic monitoring beneath landfast ice and open water, 5.6 km seaward from Davis Station, East Antarctica. Eight-minute recordings were manually sampled at 1 h intervals over 24 h every 10 days from 24 July 2021 to 30 January 2022. The study showed that call counts for Weddell seals were highest in the winter, lower during the breeding season, and almost absent in the summer. This change coincided with the occurrence of open water over the recording site, a progressive shift in Weddell seal behavior from foraging to aggregating in local fjords for the annual pupping, mating, and molting periods, and an increase in leopard seal—a potential predator—call detection rates. Leopard seal calls were primarily detected in December after the landfast ice broke up. In winter, Weddell seal calling counts were highest at dusk and night, and lowest during the day when the seals may have been feeding. Neither species exhibited a diel calling pattern once there were 24 h of sunlight. Seal locations were associated with the presence and absence of landfast ice, and call detections were influenced by their distances to the recorder.

Lineage

Progress Code: completed
Statement: The raw data was downloaded from the mooring following its retrieval and return to Australia. A preliminary inspection of the data suggested that the instrument has functioned as expected and recorded data over the full time of its deployment.

Notes

Purpose
Using recordings from the passive acoustic monitoring location offshore near Davis Station, the aim of this study was to discern whether there are seasonal and/or diel vocal patterns of the underwater calling behaviours of Weddell and leopard seals. Additionally, this study aimed to identify any relationships between the breaking up of landfast ice and the underwater vocalization patterns of both species.

Data time period: 2021-07-22 to 2022-04-30

This dataset is part of a larger collection

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156,77.96889 156,-68.57639 115,-68.57639 115,77.96889 156,77.96889

135.5,4.69625

text: westlimit=115; southlimit=-68.57639; eastlimit=156; northlimit=77.96889

Subjects
AMD | AMD/AU | CEOS | CONTINENT > ANTARCTICA | CONTINENT > ANTARCTICA > DAVIS STATION | CONTINENT > ANTARCTICA > Prydz Bay | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS | GEOGRAPHIC REGION > POLAR | MOORINGS | PASSIVE ACOUSTIC MONITORING | PHOCID SEALS | Passive Acoustic Recorder | biota |

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Other Information
Download data (GET DATA > DIRECT DOWNLOAD)

url : https://data.aad.gov.au/eds/6174/download

Public information for AAS project 5097 (PROJECT HOME PAGE)

url : https://projects.aad.gov.au/report_project_public.cfm?project_no=5097

Citation reference for this metadata record and dataset. (VIEW RELATED INFORMATION)

url : https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_5097_Weddell_Seal_Underwater_Sounds

Raw dataset from which product derived (VIEW RELATED INFORMATION > VIEW RELATED DATA)

url : https://data.aad.gov.au/metadata/AAS_5097_DAP_Acoustic_Mooring

Citation reference for this metadata record and dataset. (VIEW RELATED INFORMATION)

url : https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_5097_Weddell_Seal_Underwater_Sounds

Identifiers
  • global : AAS_5097_Weddell_Seal_Underwater_Sounds