Abstract
Large numbers of dead red spruce trees in high elevation spruce-fir forests of the eastern United States have caused much concern, and have been linked with elevated levels of air pollutants. These high elevation forests receive a significant amount of sulfate and nitrate from cloudwater deposition. The Spruce-Fir Research Cooperative, an integrated multi-institutional program, is investigating a number of hypothesized effects on the spruce-fir forests: (1) soil-mediated effects, (2) altered physiological processes, (3) increased foliar injury, and (4) increased susceptibility to winter injury. The results of Spruce-Fir Research Cooperative research are discussed in this paper.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
