| Autor: |
Daniel Pickett, Ethan H. Roth, John G. Hildebrand, Kyle Kitka, Bruce J. Thayre, Christine Jackson, Clarissa Zeller, Malorie Johnson, Zoe Gentes, Michael Mahoney, Ian Sia, Robert J. Small, Sean M. Wiggins, Joshua Jones |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
The Journal of the Acoustical Society of America. 130:2321-2321 |
| ISSN: |
0001-4966 |
| DOI: |
10.1121/1.3654276 |
| Popis: |
Long-term autonomous acoustic recordings were collected between September and June from 2006 through 2009 in the Northeastern Chukchi Sea along the continental slope 120 km north of Barrow, Alaska. These recordings were analyzed for the presence of vocalizations of ringed seals (Phoca hispida), ribbon seals (Histrophoca fasciata), and bearded seals (Erignathus barbatus). We present detailed descriptions of the acoustic repertoire of each species in addition to three-year time series of seal vocalizations and mean daily sea ice concentration. Ringed seal vocalizations are present throughout each winter and spring, indicating that they both overwinter and breed in offshore pack ice. Ribbon seal calls occur only during the open water period in 2008, but their acoustic behavior is more varied than previously described. Bearded seal vocalizations closely match well-documented calls recorded offshore near Point Barrow but have shorter duration and smaller frequency range, suggesting that demographic or behavior... |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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