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University of Wyoming
 

Toxicity of Xanthoparmelia Chlorochroa in Ruminants - WYO-392-04

 

X. chlorochroa was responsible for a massive episode of elk mortality in 2004, however we have no idea why this ubiquitous plant "turned bad" at this particular time. The potential for a recurrence of the problem complicates forest and rangeland management in the northern Rockies. This project examines one possible lichen toxin as a prelude to identifying the toxin responsible for the Red Rim dieoff. The identity of the toxin is essential to future studies of the effects of environmental conditions, etc. on the toxicity lichen in the field.