Experimental acidification of a stream in the Hubbard Brook Experimental Forest, New Hampshire
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. 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.
- Research Organization:
- Cornell Univ., Ithaca, NY
- OSTI ID:
- 6900159
- Journal Information:
- Ecology; (United States), Journal Name: Ecology; (United States) Vol. 61:4; ISSN ECOLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACID RAIN
ACIDIFICATION
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
ATMOSPHERIC PRECIPITATIONS
BIOLOGICAL EFFECTS
DATA
ECOSYSTEMS
ENVIRONMENTAL EFFECTS
EXPERIMENTAL DATA
FOOD CHAINS
INFORMATION
NUMERICAL DATA
PH VALUE
POPULATION DYNAMICS
RAIN
SPECIES DIVERSITY
STREAMS
SURFACE WATERS
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACID RAIN
ACIDIFICATION
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
ATMOSPHERIC PRECIPITATIONS
BIOLOGICAL EFFECTS
DATA
ECOSYSTEMS
ENVIRONMENTAL EFFECTS
EXPERIMENTAL DATA
FOOD CHAINS
INFORMATION
NUMERICAL DATA
PH VALUE
POPULATION DYNAMICS
RAIN
SPECIES DIVERSITY
STREAMS
SURFACE WATERS