Constructing stage-structured matrix population models from life tables: comparison of methods

PeerJ
Masami Fujiwara, Jasmin Diaz-Lopez

Abstract

A matrix population model is a convenient tool for summarizing per capita survival and reproduction rates (collectively vital rates) of a population and can be used for calculating an asymptotic finite population growth rate (λ) and generation time. These two pieces of information can be used for determining the status of a threatened species. The use of stage-structured population models has increased in recent years, and the vital rates in such models are often estimated using a life table analysis. However, potential bias introduced when converting age-structured vital rates estimated from a life table into parameters for a stage-structured population model has not been assessed comprehensively. The objective of this study was to investigate the performance of methods for such conversions using simulated life histories of organisms. The underlying models incorporate various types of life history and true population growth rates of varying levels. The performance was measured by comparing differences in λ and the generation time calculated using the Euler-Lotka equation, age-structured population matrices, and several stage-structured population matrices that were obtained by applying different conversion methods. The results...Continue Reading

References

Oct 23, 2010·The American Naturalist·Roberto Salguero-Gómez, Joshua B Plotkin
May 23, 2015·The American Naturalist·François Bienvenu, Stéphane Legendre

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Citations

Oct 18, 2020·Conservation Biology : the Journal of the Society for Conservation Biology·Tamora D JamesAndrew P Beckerman

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Software Mentioned

MATLAB
Excel

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