This page demonstrates the mechanics of the Leslie
matrix approach. Population size in the next time step (**Nt+1**)
is calculated by multiplying the **transition matrix** by the population size
at the present time (**Nt**). The values in the **top
row marked in this colou**r are the average number of offspring
produced from age class x to x+1. The **cells that
form the diagonal in this colour** show the survivorship, i.e. the probability
of surviving from age class x to age class x+1.

Each time you click the "Next Time Step" Button, the multiplication
is performed and the results show in **Nt+1**. When the age time step
is greater than zero, the population structure in **Nt+1** is first moved to **Nt**.
Total population size is also shown.

Copyright © 2000 [Neil White].

Revised: 13/09/2000 02:39