EEMB 148 Lecture Notes - Lecture 1: Population Viability Analysis, Endangered Species Act Of 1973, Bearded Vulture
9 Feb 2018
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It seeks relationship b/w population size and probability of extinction. It is concerned with determination of probability that a population will persists for some given time. It combines all sources of stochasticity and deterministic population growth into one model (always requires computer simulation). You need to know the current population size (n), estimate of population growth and how much the population growth fluctuates over time. Components of pva model: basic population model (may be incorrect, demographic variation, temporal variation (may be too little data + sampling, spatial variation (it is often ignored, individual variation (often unknown) Potential uses of pvas: assessments of extinction risk, assessing risk of a single population. Mvp of 30-70 bears 95% probability of surviving at least 100 years: how good are the numbers that are put in there, comparing relative risks of two or more populations. The two populations might be in two different habitats and see that they have two different levels of risk.
