DemoInfo {primer} | R Documentation |
Given a demographic projection matrix (aka transition matrix), this calculates lambda, stable age/stage structure, reproductive value, sensitivity, and elasticity.
DemoInfo(mat)
mat |
A matrix of demographic transitions (Leslie [age] or Lefkovitch [stage] matrix) |
Returns a list with these components.
lambda |
A scalar, long term asymptotic growth rate. |
SSD |
A vector of stable age/stage structure |
RV |
A vector of reproductive value |
Sensitivities |
A matrix of sensitivities |
Elasticities |
A matrix of elasticities |
PPM |
A population projection matrix |
Hank Stevens (HStevens@muohio.edu)
H. Caswell.2001. Matrix Population Models: Construction, Analysis, and Interpretation. Sinauer Associates, Inc., Sunderland, MA, USA, 2nd ed. edition.
S.P. Ellner and J. Guckenheimer. 2006. Dynamic Models in Biology. Princeton University Press.
M.H.H. Stevens. 2009. A Primer of Ecology with R. Use R! Series. Springer.
### A two stage annual transition matrix annual <- matrix( c( 0, 100, .025, 0), byrow=TRUE, nrow=2) ### Generate useful summaries DemoInfo(annual)