Acid-precipitation studies in Colorado and Wyoming: Interim report of surveys of Montane amphibians and water chemistry. Interim report, 1986-1988
Surveys for amphibians were conducted in the Rocky Mountains of northern Colorado and southern Wyoming from 1986 to 1988. The northern leopard frog (Rana pipiens) was present at only 12% of historically known localities, and the boreal toad (Bufo boreas) was present at 17% of known localities. Chorus frogs (Pseudacris triseriata) suffered a catastrophic decline in population size in one population monitored since 1961, but regionally, this species was observed in 64% of known localities. Tiger salamanders (Ambystoma tigrinum) and wood frogs (Rana sylvatica) were present at 45% and 69% of known localities respectively. Acid neutralizing capacity, pH, specific conductivity, and cation concentrations in water at amphibian localities were negatively correlated with elevation. Survival of wood frog embryos declined when exposed to aluminum concentrations.
- Research Organization:
- National Ecology Research Center, Fort Collins, CO (USA)
- OSTI ID:
- 5163405
- Report Number(s):
- PB-90-103300/XAB; BIOLOGICAL--80(40).(26)
- Country of Publication:
- United States
- Language:
- English
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ABUNDANCE
ACID RAIN
ACIDIFICATION
AIR POLLUTION
AMPHIBIANS
ANIMALS
AQUATIC ORGANISMS
ATMOSPHERIC PRECIPITATIONS
BASELINE ECOLOGY
COLORADO
CORRELATIONS
DEPOSITION
DOCUMENT TYPES
ECOLOGY
EMBRYOS
FEDERAL REGION VIII
FROGS
LEVELS
MONITORING
MOUNTAINS
NAPAP
NORTH AMERICA
PH VALUE
POLLUTION
PONDS
POPULATIONS
PROGRESS REPORT
RAIN
ROCKY MOUNTAINS
SALAMANDERS
SURFACE WATERS
TOLERANCE
USA
VERTEBRATES
WATER POLLUTION
WYOMING