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one publication added to basket [337711]
Vocalizations of bearded seals (Erignathus barbatus) and their influence on the soundscape of the western Canadian Arctic
Heimrich, A.F.; Halliday, W.D.; Frouin-Mouy, H.; Pine, M.K.; Juanes, F.; Insley, S.J. (2021). Vocalizations of bearded seals (Erignathus barbatus) and their influence on the soundscape of the western Canadian Arctic. Mar. Mamm. Sci. 37(1): 173-192. https://hdl.handle.net/10.1111/mms.12732
In: Marine Mammal Science. Society for Marine Mammalogy: Lawrence. ISSN 0824-0469; e-ISSN 1748-7692
Peer reviewed article  

Available in  Authors 

Keywords
    Erignathus barbatus (Erxleben, 1777) [WoRMS]
    Marine/Coastal
Author keywords
    Arctic Ocean; bearded seals; Canadian Arctic; sea ice; soundscape

Authors  Top 
  • Heimrich, A.F.
  • Halliday, W.D.
  • Frouin-Mouy, H.
  • Pine, M.K.
  • Juanes, F.
  • Insley, S.J.

Abstract
    The soundscape is a crucial habitat feature for marine mammals. This study investigates the contribution of bearded seal vocalizations to the soundscape in the western Canadian Arctic, and also the vocal characteristics of bearded seals relative to sea ice conditions. Passive acoustic data were recorded near Sachs Harbour between August 2015 and July 2016. Sound pressure levels (SPL) in the 50-1,000 Hz and 1-10 kHz bands increased as the total duration of all bearded seal vocalizations increased, and this relationship was moderated by sea ice concentration. Bearded seals in this region had an overlapping vocal repertoire with bearded seals in other areas of the Arctic, and had seven additional vocalizations that have not been previously documented for this region. This study is the first detailed assessment of the influence of bearded seal calls on SPL, which shows the high potential of bearded seals to influence underwater sound levels during the mating season. Bearded seals live in a changing Arctic seascape, and their influence on the soundscape may shift as sea ice continues to diminish. It is imperative that acoustic monitoring continues within the Arctic, and this study provides a baseline for future monitoring as the Arctic continues to change.

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