Wednesday, March 18, 2009

How wildlife is affected by global warming.


The website where I found this article is www.environment.about.com .

In this article, Larry West discusses how animals are affected by global warming. He stated that:

"Most researchers agree that even small changes in temperature are enough to send hundreds if not thousands of already struggling species into extinction unless we can stem the tide of global warming. And time may be of the essence: A 2003 study published in the journal Nature concluded that 80 percent of some 1,500 wildlife species sampled are already showing signs of stress from climate change."

Animals are affected by climate change in many different ways. The polar bear for example, is facing habitat displacement, due to the melting of the ice slabs that they have inhabited for hundreds of years. This fast-paced change is not allowing the polar bear to adapt quickly enough to the change, making them super sensitive to global warming. Polar bears will also become extinct in the next few years, due to drowning and being unable to adapt to a new environment that will fit their needs.

Another area that is being affected by global warming; is the nesting/ breeding grounds of waterfowl in the Prairie Pothole Region. The increased temperatures caused by greenhouse gas emissions, are drying up these areas, forcing birds to migrate to new, further away areas to breed and raise their young.

Global warming also affects life cycles of various species of animals, epically migratory birds and species that hibernate. Their cycles are being disturbed because of the warmer temperatures, making birds migrate and breed sooner in the season, and making bears come out of their winter sleep earlier than usual. Global warming is also increasing the life-cycle of insects and bugs, and since they like warmer temperatures, they are spreading to new territory and are infesting more trees, causing them to die. The loss of trees not only affects animal habitats; but it can also hurt humans who are in the logging in industry.

The animals that are hardest hit by global warming are: caribou (reindeer), arctic foxes, toads, polar bears, penguins, gray wolves, tree swallows, painted turtles and salmon.





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