PhD Graduate Assistantships are available at the University of Wyoming to 
study ecosystem responses in a state-of-the-art multi-factor experiment in 
native grassland involving warming, elevated carbon dioxide, precipitation 
enhancement and invasive species introduction. Interactions among these 
global change drivers affecting carbon and water cycling, competitive 
interactions, and belowground resource availability are poorly understood. 
Successful candidates will be ambitious and energetic students interested 
in applying stable isotope techniques to field experiments, demonstrate 
excellent communication skills, and possess a MS degree in biology, 
ecology, soil science or a related field. Students may choose among 
several PhD degree programs including Ecology, Botany, and Rangeland 
Ecology. 

Inquiries should be made to Dr. Elise Pendall ([log in to unmask]; 
http://www.uwyo.edu/terra/) or Dr. David Williams ([log in to unmask]; 
http://www.uwyo.edu/dgw/index.html). Applications are due by Jan. 31, 
2007, and positions may start as early as May, 2007. The University of 
Wyoming is an EEO/AA Employer.