Fluctuation in a Rocky Mountain population of salamanders: anthropogenic acidification or natural variation?

Authors: Wissinger, S. A.; Whiteman, H. H.

Year: 1992

Journal: Journal of Herpetology, Vol. 26(4), pp. 377-391

Publisher: UNKNOWN

Keywords: ACID PRECIPITATION, AMBYSTOMA TIGRINUM, CLIMATE, GRAZING, HERPETOLOGY, MEXICAN CUT, POLLUTION, POPULATION BIOLOGY, RMBL, SALAMANDERS, SINK

Abstract

We monitored the demographics of the salamander Ambystoma tigrinum nebulosum as part of a community-wide study on the effects of acidification in sub-alpine (elevation 3600 m) ponds in central Colorado. A decline in A. t. nebulosum at this site from 1982 to 1988 has been hypothesized to result from embryonic mortality during a pulse of acidity that accompanies snowmelt in spring. Since 1988 we have monitored salamander population size, reproduction, and recruitment, and compared survival and individual growth rates among ponds which differ five-fold in acid-neutralizing capacity (ANC)

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Fluctuation in a Rocky Mountain population of salamanders: anthropogenic acidification or natural variation?

Abstract

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