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Tuesday, October 26, 2010

Penguins For Global Warming

Penguins For Global Warming
In 2004, Antarctica's McMurdo Sound was blocked by the mountainous remnant of the world's largest iceberg. The iceberg cut off supply routes for several research bases on the sound and was so big that it blocked wind and water currents that would normally break up the ice in the sound and make access to the sea much easier for researchers and penguins. As a result, tens of thousands of Adelie penguin chicks and their parents were stranded inland with a 112-mile round trip being the shortest distance to gather food
A variety of species of penguins have been declining due to the effects of global warming. Starvation, habitat loss, and the fact that the penguins' world is literally breaking up under their feet are all contributing factors to dramatic population loss
In one instance, a large number of Adelie penguins were literally made prisoners and starved because global warming had unexpectedly altered their habitat
These amazing animals can withstand some of the harshest conditions on Earth, but they cannot continue to sustain themselves without krill--a shrimplike creature that is a staple of the emperor penguin's diet. The sea ice necessary to the survival of krill larvae is disappearing earlier and taking with it 80 percent of the krill population. The emperor penguins are starving to death because the warming air and water is drastically changing the environment to which they have adapted.
The decline of the rockhopper penguin is another example of how warming temperatures are affecting these beloved birds. The number of rockhopper penguins breeding on one island has gone from 1.4 million to only 100,000 in the last 60 years--most likely due to warming waters surrounding the island


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