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A summary comparison of active acoustic detections and visual observations of marine mammals in the Canadian Beaufort Sea
Pyc, C.D.; Geoffroy, M.; Knudsen, F.R. (2016). A summary comparison of active acoustic detections and visual observations of marine mammals in the Canadian Beaufort Sea, in: Popper, A.N. et al. (Ed.) The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875: pp. 879-884. hdl.handle.net/10.1007/978-1-4939-2981-8_108
In: Popper, A.N.; Hawkins, A. (Ed.) (2016). The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875. Springer Science+Business Media, Inc: New York. ISBN 978-1-4939-2980-1. xxx, 1292 pp., more
In: Advances in Experimental Medicine and Biology. Springer: Berlin. ISSN 0065-2598, more
Peer reviewed article  

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Keywords
    Marine mammals; Balaena mysticetus Linnaeus, 1758 [WoRMS]; Delphinapterus leucas (Pallas, 1776) [WoRMS]; Marine
Author keywords
    Fisheries sonar; Active acoustic monitoring

Authors  Top 
  • Pyc, C.D.
  • Geoffroy, M.
  • Knudsen, F.R.

Abstract
    Fisheries sonar was used to determine the applicability of active acoustic monitoring (AAM) for marine mammal detection in the Canadian Beaufort Sea. During 170 h of simultaneous observation by marine mammal observers and active acoustic observation, 119 Balaena mysticetus (bowheads) and 4 Delphinapterus leucas (belugas) were visually sighted, while 59 acoustic signals of bowheads were detected by AAM operators. Observations and detection of seals were also recorded. Comparative results indicate that commercially available active acoustic systems can detect seals at distances up to 500 m and large baleen whales at distances up to 2 km.

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