The Effects Of Ambient Pollutants On The Physiology And Morphology Of Mature Red Spruce
- ASU Author/Contributor (non-ASU co-authors, if there are any, appear on document)
- James David Hutcherson (Creator)
- Institution
- Appalachian State University (ASU )
- Web Site: https://library.appstate.edu/
- Advisor
- Howard Neufeld
Abstract: Two stands of red spruce (Picea rubens Sarg.) trees growing in close proximity to each other on Whitetop Mountain in Virginia exhibit varying degrees of decline symptoms. The declining stand experiences higher precipitation and deposition amounts than the healthy stand. Average ozone levels are 50-60 ppb, with rain of pH 4.3 and cloudwater of pH 3.4. In both stands branch chambers were installed on mature trees to exclude ozone and acidic precipitation (filtered) or just acidic precipitation (non-filtered). Unchambered branches were used as controls. Morphological and physiological measurements were made on the branches over the growing season and comparisons were made among treatments for both the healthy and declining stands . . . Future studies should focus on reduced cold hardiness of red spruce as a result of acidic deposition.
The Effects Of Ambient Pollutants On The Physiology And Morphology Of Mature Red Spruce
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Created on 10/7/2021
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Additional Information
- Publication
- Thesis
- Hutcherson, J. (1993). The Effects Of Ambient Pollutants On The Physiology And Morphology Of Mature Red Spruce. Unpublished Master’s Thesis. Appalachian State University, Boone, NC.
- Language: English
- Date: 1993
- Keywords
- red spruce (Picea rubens Sarg.), trees, morphology, pollutants, acidic deposition, acidic precipitation, ozone