popbio (version 2.4.4)

generation.time: Generation time

Description

Calculates the generation time of a stage-classified matrix

Usage

generation.time(A, …)

Arguments

A

projection matrix

…

additional items are passed to splitA and are used to split A into T and F matrices

Value

Generation time. If the transition matrix is singular, then NA is returned.

Details

see section 5.3.5 in Caswell (2001).

References

Caswell, H. 2001. Matrix population models: construction, analysis, and interpretation, Second edition. Sinauer, Sunderland, Massachusetts, USA.

See Also

see fundamental.matrix and net.reproductive.rate for other age-specific traits

Examples

# NOT RUN {
data(whale)
generation.time(whale)
## fertilities in last column
data(teasel)
generation.time(teasel, r=1:6, c=6)
## Plot 3 from Calathea 
data(calathea)
sapply(calathea[9:12], generation.time)
# }