Introduction

This web page redoes the analysis of Example 1 in the paper

Ruth 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