R Script for a Population Viability Analysis of Ringed Salamanders
Metadata[+] Show full item record
Population viability analysis (PVA) is a useful tool for identifying the demographic parameters and environmental factors that determine the likelihood of species persistence. Although PVA can help wildlife managers to make informed conservation decisions, relatively few of these analyses have been performed for amphibians despite drastic global declines. We performed a PVA on five populations of Ringed Salamanders (Ambystoma annulatum) using four years of drift fence data and the terrestrial life stage survival rates of two closely related species. To compare the predictions made by two different approaches to PVA, we ran analyses using either methods that relied only on annual abundance data or methods that incorporated stage-specific abundances, mortality rates and fecundities. The R script written to conduct these analyses can be found here.