Graduate Research Opportunity – Greater Yellowstone Area
(David Williams Lab, University of Wyoming)
Tracing pollution sources and deposition hotspots using nitrogen isotopes and 
lichen bio-
indicators

DESCRIPTION. We seek a graduate student to pursue Master’s thesis research 
beginning Fall 
2015 or Spring 2016 semester on the sources and spatial pattern of nitrogen (N) 
pollution in the 
Greater Yellowstone Area (GYA) in Wyoming and Idaho. Our collaborative project 
involving the 
US Forest Service, National Park Service, Bureau of Land Management and the 
University of 
Wyoming will refine benchmark Critical Load levels for lichens across the GYA, 
and calibrate 
lichen bio-indicators for N deposition rates and N-isotope composition. The 
work will require 
field set-up of ion exchange resin collectors for monitoring N deposition, 
field collection of 
lichens from throughout the GYA and laboratory analysis of lichens and resin 
extracts for N 
isotope composition. For additional information about the Williams Lab, visit 
http://www.uwyo.edu/dgw/home.html. For additional information about MS degree 
options in 
the Department of Botany at the University of Wyoming, visit 
http://www.uwyo.edu/botany/graduate%2Dprograms/. 

QUALIFICATIONS. Applicants must have completed a Bachelor’s degree in biology, 
environmental sciences or a related field. Candidates should have experience in 
field studies 
with capabilities for carrying out research in remote field locations. 
Candidates with experience 
in GIS and spatial analysis or environmental chemistry are especially 
encouraged to apply. 

TO APPLY. Candidates should email (in a single PDF file) a cover letter, CV, 
one-page statement 
of research interests, GRE scores, and the names and contact information of 
three references to 
David Williams ([email protected]).

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