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An assessment of the audibility of sound from human transport by breeding Weddell seals (Leptonychotes weddellii)

Citation

Van Polanen Petel, T and Terhune, JM and Hindell, MA and Giese, MA, An assessment of the audibility of sound from human transport by breeding Weddell seals (Leptonychotes weddellii), Wildlife Research, 33, (4) pp. 275-291. ISSN 1035-3712 (2006) [Refereed Article]

DOI: doi:10.1071/WR05001

Abstract

Anthropogenic noise generated through travel in the Antarctic has the potential to affect the region's wildlife. Weddell seals (Leptonychotes weddellii) in particular can be exposed to anthropogenic noise because they live under, and breed on, the fast ice on which humans travel. To investigate the potential effects of anthropogenic noise on Weddell seals we developed sound profiles for pedestrian travel, over-snow vehicles, aircraft and watercraft operating at various distances and altitudes from breeding seals. The received 1/3-octave noise levels were then related to an assumed detection threshold for the Weddell seal. We found that most noise levels generated by the pedestrian, quad (4-wheeled, all-terrain vehicle) and Hagglunds (tracked, all-terrain vehicle) were commonly categorised in the inaudible and barely audible range of detection (both in-air and underwater), while noise levels generated by the helicopter, Twin Otter aircraft and Zodiac boat were categorised more commonly in the barely audible and clearly audible range. Experimental underwater recordings of vocal behaviour of Weddell seals exposed to continuous low-amplitude over-snow vehicle noise (i.e. Hagglund operation) were also made. Weddell seals underwater did not alter individual call types in response to low-level Hagglunds noise, but they did decrease their calling rate. © CSIRO 2006.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Zoology
Research Field:Zoology not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Van Polanen Petel, T (Ms Tamara Van Polanen Petel)
Author:Hindell, MA (Professor Mark Hindell)
ID Code:39777
Year Published:2006
Web of Science® Times Cited:7
Deposited By:Zoology
Deposited On:2006-08-01
Last Modified:2007-05-17
Downloads:0

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