Population models

Generic population model
Detailed elephant model (Excel)
Detailed hippo model (Excel)

Detailed elephant model (QPW)

 

Detailed hippo model (QPW)

Elephant numbers in Namibia incl. model description
Model parameters for Etosha elephant migration
Zimbabwe elephant population model
Model parameters for IRAS species

A simple generic population model was constructed to analyse population growth rates and age structures as well as the effects of illegal hunting and sport hunting.

The model is based on broad reproductive parameters. These parameters have been described for the following species and species groups:

A more detailed model was developed for elephants.This model permits testing of expected breeding performance and the response to various management regimes (illegal hunting, culling, capture of live animals, problem animal control and sport hunting). It includes a density dependence function and it also costs all management activities regimes and estimates the income from ivory, elephant skin and sport hunting.