Record Display for the EPA National Library Catalog
RECORD NUMBER: 18 OF 60
|OLS Field Name||OLS Field Data|
|Main Title||Effect of Simulated Acid Rain on Seedling Emergence and Growth of Eleven Woody Species.|
|Author||Lee, Jeffrey J. ; Weber, David E. ;|
|CORP Author||National Heart, Lung, and Blood Inst., Bethesda, MD.|
|Additional Subjects||Acidity ; Precipitation(Methodology) ; Air pollution ; Water pollution ; Sulfuric acid ; Cations ; Anions ; Seeds ; Forest trees ; Shrubs ; New Hampshire ; Reprints ; Acid precipitation ; Air pollution effects(Plants)|
Seeds of eleven woody species were exposed to 2.3 cm/wk of simulated sulfuric acid rain at pH values of 3.0, 3.5, or 4.0, or to a simulated control rain at approximately pH 5.6. All treatments also contained a neutral mixture of cations and anions based on concentrations reported for Hubbard Brook, N.H. Seeds or seedlings were subject to ambient conditions, except for precipitation. Ambient rainfall was excluded by a partial covering which allowed some dry deposition. Seeds were planted in winter, 1977; seedlings were harvested the following summer. The dry weights of the tops and roots of each seedling were recorded.