Introduction
This web page redoes the analysis of Example 1 in the paperRuth G. Shaw, Charles J. Geyer, Stuart Wagenius, Helen H. Hangelbroek, and Julie R. Etterson (2008).
Unifying Life History Analyses for Inference of Fitness and Population Growth.
American Naturalist, 172, E35–E47.
following the course slides, deck 4.
This is the example about estimating population growth rate.
Data
The data are in the dataset aphid
in
the R package aster
.
Set-Up and Model Fitting and Testing
Conclusion: model
resp ~ 0 + surv + fecund + surv:poly(age, d = 2) + fecund:poly(age, d = 4)
is the best of the models considered.
Estimating Population Growth Rate