Is Atmospheric Nitrogen Affecting Species Composition in Rocky Mountain National Park and Glacier National Park?
This research evaluates whether species composition changes are occurring or may occur in the future in alpine communities, which are sensitive to changes in anthropogenically derived nutrients. Critical thresholds of alpine plant sensitivity to N input will be evaluated using experimental plots with a range of N fertilization levels (5, 10, and 30 kg N/ ha /yr) to obtain response curves for vegetation. The research is being conducted beginning in 2005 in Rocky Mountain and Glacier National Parks, representing sites with high and low rates of N deposition. Dr. William Bowman from the University of Colorado at Boulder is the principal investigator on this project.
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