Thirst felling West’s aspen

Thirst felling West’s aspen

Cortez native’s Stanford research pinpoints cause of sudden decline
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William Anderegg ventures into the aspen canopyto make measurements on tree photosynthesisoutside Mancos in 2009.
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William Anderegg measures root health in an aspen clone near Mancos inMay.
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Ep 712299987
Sudden aspen decline, or SAD, has affected this group of dead and dying aspens near Dolores, seen in August.
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Ep 712299987
William Anderegg chisels into an aspen tree to measure carbohydrate stores in May near Mancos.
Ep 712299987
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