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Monitoring

Jun

30

2009
 
 

Parched



Drying vegetation is fueling wildfire expansion

istock_000008660325xsmallGlobal warming is worsening wildfires in the West, but not completely in the way that most people assume.  Even more so than hotter temperatures or longer fire seasons, the changing climate is drying out leaves, trees, brush, grasses and other vegetation – providing more fuel for the flames.

Examining fire data alongside climate records from 1916 to 2003, the authors confirmed that fire seasons were worst in years that were particularly hot and had low precipitation, especially in the West’s northern and mountain regions. By contrast, in shrublands and grasslands, it was a wet year followed by a dry year that produced the most fodder for flames. These differences, the researchers write in Ecological Applications, means that programs to thin forests and remove fire fuel should be specifically tailored to different ecosystems.

With average annual burning expected to rise above ten million acres within the next several years, more land in the West, especially the northwest, will be at risk. – Jessica Leber

Source: Littell, J.S. et al. 2009. Climate and wildfire area burned in western U.S. ecoprovinces, 1916–2003. Ecological Applications DOI: 10.1890/07-1183

Image © negaprion, iStockphoto.com

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Jun

28

2009
 
 

South of the Border



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Jun

25

2009
 
 

Swimmer’s Ear



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Jun

24

2009
 
 

A Malignant Growth



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Jun

12

2009
 
 

Boom Towns Busted



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Jun

10

2009
 
 

Case Unclosed



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Jun

9

2009
 
 

Scat From Space



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Jun

5

2009
 
 

Zoom In, Zoom Out



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Jun

4

2009
 
 

A Hormone of Hurt



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May

29

2009
 
 

Satellite Phytography



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