Arctic Case Study

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In 2006 NASA reported that the amount of permanent sea ice decreased by 14% between 2004 and 2005

Tree line is moving north, also to higher altitudes 

Tundra ecosystems in Arctic areas being lost as the climate warms and other plants take over

Permanently froxen ground is thawing out

The spread of speices such as the spruce bark beetle in Alaska changing the food chain

Increases in the numbber and extent of northern coniferious forest fires in Arctic Russia

10 million hectares burn each year losing 0.8% of the world's coniferous forests

Warmer water has reduced the number of marine plants on which many smaller fish feed

reduction in smaller fish has affected those higher up on the food chain

smaller seal stocks reduce the avialable food supply for polar bears

the melting of sea ice has a devasting affect on the polar bears- they unt…


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