| Main Title |
Acid Deposition and Forest Decline. |
| Author |
Johnson, A. H. ;
Siccama, T. G. ;
|
| CORP Author |
Pennsylvania Univ., Philadelphia. ;Yale Univ., New Haven, CT. School of Forestry and Environmental Studies.;Corvallis Environmental Research Lab., OR. |
| Year Published |
1983 |
| Report Number |
EPA/600/J-83/326; |
| Stock Number |
PB86-139540 |
| Additional Subjects |
Acidity ;
Precipitation(Meteorology) ;
Forest trees ;
Metals ;
Trace elements ;
Vulnerability ;
Mortality ;
Toxicity ;
Stress(Physiology) ;
Elevation ;
North America ;
Reprints ;
Acid precipitation ;
Picea abies ;
Norway spruce trees
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB86-139540 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
14p |
| Abstract |
The location, topography and other characteristics of the high-elevation forests of eastern North America cause them to be receptors of high levels of acid deposition and airborn trace metals. No other major forested areas in the U.S. are subjected to such intensely acid cloud moisture, such heavy acid deposition, and such high rates of trace-metal deposition. The vulnerability of these forests to the pollutants has not been documented, but because of the spruce decline it is indeed reasonable to suspect vulnerability. Current data shows several possible pathways by which acid deposition could contribute to spruce mortality, but at this time none of these pathways are supported by convincing evidence. The framework for Al toxicity proposed by Ulrich is not consistent with the data generated. The evidence regarding a triggering effect of drought is substantiated by data, but it is not know whether drought is sufficient to cause the dieback and decline or whether an additional stress from pollution is involved. In viewing the spruce dieback and decline as a stress-related syndrome, it is suggested the possibility of multiple stresses is possible. (Copyright (c) 1983 American Chemical Society.) |
| Supplementary Notes |
Prepared in cooperation with Yale Univ., New Haven, CT. School of Forestry and Environmental Studies. Sponsored by Corvallis Environmental Research Lab., OR. |
| Availability Notes |
Pub. in Environmental Science and Technology 17, n7 p294A-305A 1983. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Acid Deposition and Forest Decline. |
| PUB Date Free Form |
c1983 |
| Category Codes |
2F; 68A; 48D |
| NTIS Prices |
Not available NTIS |
| Primary Description |
600/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
607219768 |
| Origin |
NTIS |
| Type |
CAT |
