Title
Acoustic detections of Arctic marine mammals near Ulukhaktok, Northwest Territories, Canada
Author(s)
Halliday, W. D.;Pine, K.;Insley, S. J.;Soares, R. N.;Kortsalo, P.;Mouy, X.
Published
2019
Publisher
Canadian Journal of Zoology
Abstract
The Arctic marine environment is changing rapidly through a combination of sea ice loss and increased anthropogenic activity. Given these changes can affect marine animals in a variety of ways, understanding the spatial and temporal distributions of Arctic marine animals is imperative. We use passive acoustic monitoring to examine the presence of marine mammals near Ulukhaktok, Northwest Territories, Canada, from October 2016 to April 2017. We documented bowhead whale (Balaena mysticetus Linnaeus, 1758) and beluga whale (Delphinapterus leucas (Pallas, 1776)) vocalizations later into the autumn than expected, and we recorded bowhead whales in early April. We recorded ringed seal (Pusa hispida (Schreber, 1775)) vocalizations throughout our deployment, with higher vocal activity than in other studies and with peak vocal activity in January. We recorded bearded seals (Erignathus barbatus (Erxleben, 1777)) throughout the deployment, with peak vocal activity in February. We recorded lower bearded seal vocal activity than other studies, and almost no vocal activity near the beginning of the spring breeding season. Both seal species vocalized more when ice concentration was high. These patterns in vocal activity document the presence of each species at this site over autumn and winter and are a useful comparison for future monitoring.
Keywords
Balaena mysticetus;bearded seal;beluga whale;bowhead whale;climate;change;conservation;Delphinapterus leucas;Erignathus barbatus;passive acoustic monitoring;phenology;Pusa hispida;ringed seal;sea;ice;vocalization;seals erignathus-barbatus;cod boreogadus-saida;bowhead whales;beluga;whales;bearded seals;beaufort sea;chukchi sea;underwater;vocalizations;balaena-mysticetus;seasonal patterns
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PUB24334