Declining amphibian populations: The problem of separating human impacts from natural fluctuations
Pechmann JH, Scott DE, Semlitsch RD, Caldwell JP, Vitt LJ, Gibbons JW. 1991. Declining amphibian populations: The problem of separating human impacts from natural fluctuations. Science. 253(5022):892-895
Supporting long-term census data are generally unavailable to support reports of declining amphibian populations. Populations fluctuate substantially in both size of breeding population and recruitment of juveniles. No overall trend was exhibited in breeding population size in three species, and a fourth population increased. Correlation with recent droughts and recruitment failures were satisfactory. Declines due to anthropogenic causes may require long-term studies.
- Type
- Journal Article
- Authors
- Pechmann, Joseph; Scott, David; Semlitsch, Raymond; Caldwell, Janalee; Vitt, Laurie; Gibbons, J.
- Units
- DEVA
- Keywords
- Absence (Biodiversity), Abundance (Biodiversity), Amphibia (Amphibians), Anthropogenic, Anura (Frogs Toads), Bufonidae (Toads Bufonids), census data, Distribution (Biodiversity), Population Decline, Presence (Biodiversity), South Carolina, Taxa Links To Datasets, Taxa Links To References