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A Little Less ArcticThe Rise of Killer Whales as a Major Arctic Predator

A Little Less Arctic: The Rise of Killer Whales as a Major Arctic Predator [Anecdotal evidence, sighting reports, Inuit traditional knowledge, and photographic identification indicate that killer whale (Orcinus orca) occurrence in Hudson Bay is increasing. Killer whales were not known to be present in the region prior to the mid-1900s but have since shown an exponential increase in sightings. More sightings from Foxe Basin, Nunavut in the north to Churchill, Manitoba in the south appear to be related to a decrease in summer sea ice in Hudson Strait. Killer whale activity during the open water season has been concentrated in the northwest Hudson Bay region that includes the Repulse Bay and northern Foxe Basin areas. Here, prey items are diverse and abundant. Killer whales are reported in western Hudson Bay on an annual basis with sighting reports and anecdotal evidence suggesting they are first observed heading through Hudson Strait in July and returning to the northwest Atlantic in September. However, arrival, occupancy, and departure times are likely related to yearly ice conditions and prey availability.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

A Little Less ArcticThe Rise of Killer Whales as a Major Arctic Predator

Editors: Ferguson, Steven H.; Loseto, Lisa L.; Mallory, Mark L.
Ferguson, S. H.; Higdon, J. W.; Chmelnitsky, E. G.
A Little Less Arctic — Jan 1, 2010
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Publisher
Springer Netherlands
Copyright
© Springer Netherlands 2010
ISBN
978-90-481-9120-8
Pages
117 –136
DOI
10.1007/978-90-481-9121-5_6
Publisher site
See Chapter on Publisher Site

Abstract

[Anecdotal evidence, sighting reports, Inuit traditional knowledge, and photographic identification indicate that killer whale (Orcinus orca) occurrence in Hudson Bay is increasing. Killer whales were not known to be present in the region prior to the mid-1900s but have since shown an exponential increase in sightings. More sightings from Foxe Basin, Nunavut in the north to Churchill, Manitoba in the south appear to be related to a decrease in summer sea ice in Hudson Strait. Killer whale activity during the open water season has been concentrated in the northwest Hudson Bay region that includes the Repulse Bay and northern Foxe Basin areas. Here, prey items are diverse and abundant. Killer whales are reported in western Hudson Bay on an annual basis with sighting reports and anecdotal evidence suggesting they are first observed heading through Hudson Strait in July and returning to the northwest Atlantic in September. However, arrival, occupancy, and departure times are likely related to yearly ice conditions and prey availability.]

Published: Jan 1, 2010

Keywords: Beluga; Bioacoustics; Bowhead; Inuit observations; Movements; Narwhal; Photo-identification; Rake marks

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