Physiological diagnosis of the health of spruce and fir at high elevations in the Southern Appalachians
Conference
·
· Bulletin of the Ecological Society of America; (United States)
OSTI ID:7016111
- Oak Ridge National Laboratory, TN (United States)
A sequence of field studies to evaluate causes of decreasing radial growth rates of red spruce at high elevations in the Great Smokey Mountains during the past 30 years has examined climatic signals, competition, xylem wood chemistry, soil chemistry, foliar nutrition and carbon allocation patterns. The resultant hypothesis that acid deposition alters red spruce growth through limiting calcium availability, and consequently net carbon assimilation, has now been tested in controlled greenhouse and field studies. Recent measurements of reduce respiration and increased photosynthesis of red spruce samplings in response to adding calcium in the field, provides additional evidence linking acid deposition to altered nutrition, physiology, and growth of red spruce. Initial data from physiological gradient analysis also support the occurrence of parallel elevational gradients in physiology of fraser fir.
- OSTI ID:
- 7016111
- Report Number(s):
- CONF-940894--
- Conference Information:
- Journal Name: Bulletin of the Ecological Society of America; (United States) Journal Volume: 75:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of acid deposition on calcium nutrition and health of Southern Appalachian spruce fir forests
Effects of acidic deposition on nutrient uptake, nutrient cycling and growth processes of vegetation in the spruce-fir ecosystem
Soil chemistry and nutrition of North American spruce-fir stands: Evidence of recent change. [Picea rubens Sarg]
Conference
·
Tue Jan 31 23:00:00 EST 1995
·
OSTI ID:32571
Effects of acidic deposition on nutrient uptake, nutrient cycling and growth processes of vegetation in the spruce-fir ecosystem
Technical Report
·
Wed Oct 16 00:00:00 EDT 1996
·
OSTI ID:451240
Soil chemistry and nutrition of North American spruce-fir stands: Evidence of recent change. [Picea rubens Sarg]
Journal Article
·
· Journal of Environmental Quality; (United States)
·
OSTI ID:5456956