hudsonia: Projection matrices for mountain golden heather

Description Usage Format Details Source Examples

Description

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

Usage

1

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

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data(hudsonia)
sapply(hudsonia, lambda)

## mean matrix 
x<-mean(hudsonia)
image2(x, mar=c(1,4,5.5,1))
title("Hudsonia mean matrix", line=2.5)
lambda(x)
# variance
var2(hudsonia)

Example output

      A85       A86       A87       A88 
0.9593438 1.0098094 0.8453119 1.0183199 
[1] 0.9659819
                  seed    seedlings         tiny       small      medium
seed      0.000000e+00 0.0000000000 1.597536e-02 0.112394907 0.379714727
seedlings 3.333333e-09 0.0000000000 4.033333e-07 0.000002620 0.000009020
tiny      0.000000e+00 0.0003450425 1.977764e-02 0.006738116 0.003583282
small     0.000000e+00 0.0000000000 6.652430e-03 0.003430680 0.007777340
medium    0.000000e+00 0.0000000000 0.000000e+00 0.023814302 0.007842709
large     0.000000e+00 0.0000000000 0.000000e+00 0.001046522 0.018737353
                 large
seed      1.9203252267
seedlings 0.0000460625
tiny      0.0000000000
small     0.0089150692
medium    0.0269159567
large     0.0505245025

popbio documentation built on May 4, 2018, 1:04 a.m.