Underwater soundscape in Seaview Bay, Antarctica, and triple ascending trill of the leopard seal (Hydrurga leptonyx) underwater vocalizations
Abstract The underwater soundscape was recorded in Seaview Bay off Inexpressible Island, Ross Sea region Marine protected area, for 3 days in December 2021. Leopard seal Hydrurga leptonyx vocalizations were a prominent sound source that led to variations in ambient sound pressure levels in a frequen...
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| Format: | Article |
| Language: | English |
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Wiley
2024-07-01
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| Series: | Ecology and Evolution |
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| Online Access: | https://doi.org/10.1002/ece3.70038 |
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| _version_ | 1849714081442824192 |
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| author | Dong‐Gyun Han Jee Woong Choi Jong‐U Kim Jeong‐Hoon Kim Hyoung Sul La |
| author_facet | Dong‐Gyun Han Jee Woong Choi Jong‐U Kim Jeong‐Hoon Kim Hyoung Sul La |
| author_sort | Dong‐Gyun Han |
| collection | DOAJ |
| description | Abstract The underwater soundscape was recorded in Seaview Bay off Inexpressible Island, Ross Sea region Marine protected area, for 3 days in December 2021. Leopard seal Hydrurga leptonyx vocalizations were a prominent sound source that led to variations in ambient sound pressure levels in a frequency range of approximately 150–4500 Hz. Among the 14 call types previously identified, except ultrasound vocalizations, six types of broadcast calls were classified, and their acoustic characteristics were analyzed. We focused on the acoustic characteristics of four low‐frequency calls, clustered in a relatively narrow bandwidth, which have been relatively less studied. We identified a new call type of a triple ascending trill consisting of three trill parts, expanding upon the findings of previous studies. The audio data extracted from leopard seal vocalization videos, recorded by a monitoring camera on sea ice, enhanced the reliability of identifications of the underwater triple ascending trill. We present the unique results of underwater passive acoustic monitoring conducted at Seaview Bay, designated as Antarctic Specially Protected Area No 178. Our results could contribute to the development of detection and localization algorithms for leopard seal vocalizations and can be used as fundamental data for studies related to the vocalization and behavior of this species. |
| format | Article |
| id | doaj-art-22f6d7f261604f4c8510c3dbb5ee24ee |
| institution | DOAJ |
| issn | 2045-7758 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecology and Evolution |
| spelling | doaj-art-22f6d7f261604f4c8510c3dbb5ee24ee2025-08-20T03:13:48ZengWileyEcology and Evolution2045-77582024-07-01147n/an/a10.1002/ece3.70038Underwater soundscape in Seaview Bay, Antarctica, and triple ascending trill of the leopard seal (Hydrurga leptonyx) underwater vocalizationsDong‐Gyun Han0Jee Woong Choi1Jong‐U Kim2Jeong‐Hoon Kim3Hyoung Sul La4Research Center for Ocean Security Engineering and Technology Hanyang University ERICA Ansan Republic of KoreaDepartment of Marine Science and Convergence Engineering Hanyang University ERICA Ansan Republic of KoreaDivision of Life Sciences Korea Polar Research Institute Incheon Republic of KoreaDivision of Life Sciences Korea Polar Research Institute Incheon Republic of KoreaDivision of Ocean & Atmosphere Sciences Korea Polar Research Institute Incheon Republic of KoreaAbstract The underwater soundscape was recorded in Seaview Bay off Inexpressible Island, Ross Sea region Marine protected area, for 3 days in December 2021. Leopard seal Hydrurga leptonyx vocalizations were a prominent sound source that led to variations in ambient sound pressure levels in a frequency range of approximately 150–4500 Hz. Among the 14 call types previously identified, except ultrasound vocalizations, six types of broadcast calls were classified, and their acoustic characteristics were analyzed. We focused on the acoustic characteristics of four low‐frequency calls, clustered in a relatively narrow bandwidth, which have been relatively less studied. We identified a new call type of a triple ascending trill consisting of three trill parts, expanding upon the findings of previous studies. The audio data extracted from leopard seal vocalization videos, recorded by a monitoring camera on sea ice, enhanced the reliability of identifications of the underwater triple ascending trill. We present the unique results of underwater passive acoustic monitoring conducted at Seaview Bay, designated as Antarctic Specially Protected Area No 178. Our results could contribute to the development of detection and localization algorithms for leopard seal vocalizations and can be used as fundamental data for studies related to the vocalization and behavior of this species.https://doi.org/10.1002/ece3.70038acoustic characteristicsleopard seal vocalizationpassive acoustic monitoringSeaview Baytriple ascending trillunderwater soundscape |
| spellingShingle | Dong‐Gyun Han Jee Woong Choi Jong‐U Kim Jeong‐Hoon Kim Hyoung Sul La Underwater soundscape in Seaview Bay, Antarctica, and triple ascending trill of the leopard seal (Hydrurga leptonyx) underwater vocalizations Ecology and Evolution acoustic characteristics leopard seal vocalization passive acoustic monitoring Seaview Bay triple ascending trill underwater soundscape |
| title | Underwater soundscape in Seaview Bay, Antarctica, and triple ascending trill of the leopard seal (Hydrurga leptonyx) underwater vocalizations |
| title_full | Underwater soundscape in Seaview Bay, Antarctica, and triple ascending trill of the leopard seal (Hydrurga leptonyx) underwater vocalizations |
| title_fullStr | Underwater soundscape in Seaview Bay, Antarctica, and triple ascending trill of the leopard seal (Hydrurga leptonyx) underwater vocalizations |
| title_full_unstemmed | Underwater soundscape in Seaview Bay, Antarctica, and triple ascending trill of the leopard seal (Hydrurga leptonyx) underwater vocalizations |
| title_short | Underwater soundscape in Seaview Bay, Antarctica, and triple ascending trill of the leopard seal (Hydrurga leptonyx) underwater vocalizations |
| title_sort | underwater soundscape in seaview bay antarctica and triple ascending trill of the leopard seal hydrurga leptonyx underwater vocalizations |
| topic | acoustic characteristics leopard seal vocalization passive acoustic monitoring Seaview Bay triple ascending trill underwater soundscape |
| url | https://doi.org/10.1002/ece3.70038 |
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