Loss of Arctic sea ice causing punctuated change in sightings of killer whales (Orcinus orca) over the past century.

  title={Loss of Arctic sea ice causing punctuated change in sightings of killer whales (Orcinus orca) over the past century.},
  author={Jeff W. Higdon and Steven H. Ferguson},
  journal={Ecological applications : a publication of the Ecological Society of America},
  volume={19 5},
  • J. HigdonS. Ferguson
  • Published 1 July 2009
  • Environmental Science
  • Ecological applications : a publication of the Ecological Society of America
Killer whales (Orcinus orca) are major predators that may reshape marine ecosystems via top-down forcing. Climate change models predict major reductions in sea ice with the subsequent expectation for readjustments of species' distribution and abundance. Here, we measure changes in killer whale distribution in the Hudson Bay region with decreasing sea ice as an example of global readjustments occurring with climate change. We summarize records of killer whales in Hudson Bay, Hudson Strait, and… 

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