Whales

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Whales

  1. 1. HUMPBACK WHALES: A VICTIM OF CLIMATE CHANGE by Lizzy Beato, Sam Clark-Clough, Ali Hentges, and Kristin Kerbavaz
  2. 2. Humpback whales have been on the endangered species list since 1966.
  3. 3. The biggest threat to the humpback whale population is no longer commercial whaling.
  4. 4. Now Humpback whales are being threatened by climate change
  5. 5. Humpback whales travel thousands of kilometers in the summer every year to the Southern Ocean to feed on krill and cephalopods, such as squid and cuttlefish.
  6. 6. Recently, however, when they finally reach their destination, they find it to be dramatically different from the Southern Ocean of earlier years.
  7. 7. In the past 50 years, the western Antarctic Peninsula has warmed at more than four times the average rate of world-wide climate change.
  8. 8. Frontal zones are predicted to move southward which means that humpback whales will have to travel 200 to 500 kilometers south to feed.
  9. 9. Area covered by sea ice is projected to decrease by 10-15%.
  10. 10. Loss of sea ice means a shift in species composition and less diatoms, which krill eat.
  11. 11. Less food for krill will result in less krill.
  12. 12. A loss of sea is will decrease whale foraging habitat and food supply.

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