Thursday January 14, 2010
Arctic Tundra is Being Lost As Far North Quickly Warms
bill sherwonit
e360
The treeless ecosystem of mosses, lichens, and berry plants is giving way to shrub land and boreal forest. As scientists study the transformation, they are discovering that major warming-related events, including fires and the collapse of slopes due to melting permafrost, are leading to the loss of tundra in the Arctic.
During the summer of 2007, lightning strikes sparked five tundra fires on Alaska’s North Slope. Two of the fires — rare events north of the Arctic Circle — began in neighboring drainages, only a couple of days apart. That, in itself, might have gained the attention of tundra researchers. But the 2007 fire season would ultimately burn a record swath across the North Slope, while reshaping the way scientists think about the Arctic’s response to global warming.
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Posted in: by bubblejam at 08:33 AM | Comments (0) | Email This Entry