Learn R Programming

popbio (version 1.0.1)

fundamental.matrix: Fundamental matrix and age-specific survival

Description

Age-specific survival calculations from stage-classified matrices. Includes the mean, variance and coefficient of variation (cv) of the time spent in each stage class and the mean and variance of the time to death

Usage

fundamental.matrix(T)

Arguments

T
A transition matrix only (without fertilities)

Value

  • A list with 5 items
  • Nfundamental matrix or mean of the time spent in each stage class
  • varvariance of the time spent in each stage class
  • cvcoefficient of variation (sd/mean)
  • meanetamean of time to death
  • varetavariance of time to death

Details

see section 5.3.1 in Caswell (2001).

References

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

See Also

see generation.time and net.reproductive.rate for other age-specific traits

Examples

Run this code
data(whale)
fundamental.matrix(whale$T)

Run the code above in your browser using DataLab