Unusual narwhal sea ice entrapments and delayed autumn freeze-up trends

  title={Unusual narwhal sea ice entrapments and delayed autumn freeze-up trends},
  author={K. Laidre and M. Heide-J{\o}rgensen and H. Stern and P. Richard},
  journal={Polar Biology},
  • K. Laidre, M. Heide-Jørgensen, +1 author P. Richard
  • Published 2011
  • Biology
  • Polar Biology
  • Sea ice entrapments of narwhals (Monodon monoceros) occur when rapid changes in weather and wind conditions create a formation of fast ice in bays or passages used by whales. Between 2008 and 2010, four entrapments of narwhals were reported in Canada and Greenland. In each case, large groups (40–600 individuals) succumbed in the sea ice at three separate summering localities, two of these where entrapments had never before been reported. We examined long-term trends in autumn freeze-up timing… CONTINUE READING
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