hudsonia {popbio}R Documentation

Projection matrices for mountain golden heather

Description

Projection matrices for the mountain golden heather (Hudsonia montana) for the years 1985 through 1988

Usage

data(hudsonia)

Format

A list of 4 matrices from 1985-1988

Details

A projection matrix with 6 size classes: seeds, seedlings, and 4 size classes divided by plant area.

Source

Table 6.7 in Morris and Doak (2002). The original data is from Frost (1990).

Morris, W. F., and D. F. Doak. 2002. Quantitative conservation biology: Theory and practice of population viability analysis. Sinauer, Sunderland, Massachusetts, USA.

Examples

data(hudsonia)
## various ways to return lambda1 for each year
sapply(hudsonia, function(x) eigen.analysis(x)$lambda1)
#sapply(hudsonia, eigen.analysis)["lambda1",]
#sapply(lapply(hudsonia, eigen.analysis), "[[", "lambda1")

## mean matrix 
x<-mean(hudsonia)
image2(x, mar=c(1,4,4,1))
eigen.analysis(x)$lambda1


[Package popbio version 1.1.11 Index]