Life Table Calculations

Input

Enter or browse to the location of a text file containing two or three columns. The first two columns contain survivorship and maternity data — the data represented by l(x) and m(i) respectively in Caswell (1989, also 2001). For the l(x) column, the initial value of 1 when x = 0 is omitted — the program will automatically insert the appropriate value. The third, optional column contains a vector of population numbers: an initial age distribution that will be used as the basis for a projection of population numbers over time.

Use my data:

Use hypothetical data from Caswell (1989, p. 14). (Select any birth timing scheme.)

Use hypothetical data from Gotelli (2001, p. 62). (Select “Birth pulse, post-breeding census.”)

Use barnacle data from Connell (1970). (Select “Birth pulse, post-breeding census.”)

Birth schedule and census timing

Output options

 Original data?

 Life Table?

 Leslie Matrix?

 Stable Age Distribution Plot?

 Sensitivity and Elasticity Plots?

 Population projection for generations