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Lecture notes ES10 2

Lecture notes ES10 2 - shrubs 3 Lake Drying Interior of...

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Lecture notes ES10 2-29 part 2 1. Wild Fires increasing, in frequency AND intensity since 1970. 2004 and 2005 were the worst years of Wild Fires. (Note: 2006 wasn’t that bad). 2. (Check on these facts. The guest speaker was talking fast.) : Tundras change. There are virtually no trees and shrubs, but with warmer climate, there may be more precipitation, more insulated soil. This would cause the winter to have higher temperature, leading to decomposition. When Spring comes, there will be more nutrients, then enhanced shrub growth over grasses. Shrubs will trap the snow , then more insulated snow, then higher temperatures, and more
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Unformatted text preview: shrubs. 3. Lake Drying- Interior of Alaska= very wet. Thermokarst lakes. Lakes all over interior Alaska. What could be occurring is that these lakes may be drying. 4. The big question that people are trying to figure out is: Is more Permafrost-Thawing causing lakes to decline in the Boreal region? 5. Much decline in animal species within water fowls (ducks, etc.). This is probably related to lakes drying out. 6. 4 million people live in the arctic. Many are dependent upon wildlife. The local Alaskans are all very aware of climate change. Warming is effecting people in the North on very personal levels....
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