Record Display for the EPA National Library CatalogRECORD NUMBER: 9 OF 17
|Main Title||Experimental Acidification of a Stream in the Hubbard Brook Experimental Forest, New Hampshire.|
|Author||Hall, R. J. ; Likens, G. E. ; Fiance, S. B. ; Hendrey, G. R. ;|
|CORP Author||New York State Coll. of Agriculture and Life Sciences, Ithaca. Ecology and Systematics Section.;Environmental Research Lab.-Du luth, MN.|
|Additional Subjects||Water pollution ; Sulfuric acid ; Nitric acid ; pH ; New Hampshire ; Streams ; Air pollution ; Acidification ; Lakes ; Reprints ; Acid rain ; Air water interactions ; Water pollution effects(Animals) ; Ecosystems|
Incident precipitation in the northeastern United States averages about pH 4 as a result of increased pollution from sulfuric and nitric acids. To determine the effect of this increased acidity on the ecology of aquatic ecosystems, dilute concentrations of sulfuric acid were added to Norris Brook, a stream in the Hubbard Brook Experimental Forest, West Thornton, New Hampshire, USA. The stream was maintained at pH 4 from April to September 1977. Stream acidification decreased species diversity, increased representation of community dominants, and decreased the complexity of the food web.