popbio (version 2.4.4)

calathea: Projection matrices for a tropical understory herb

Description

Projection matrices for a tropical understory herb (Calathea ovandensis) for plots 1-4 and years 1982-1985 and the pooled matrix

Usage

data(calathea)

Format

A list of 17 matrices ordered by plot then year, with the pooled matrix last.

Details

A projection matrix constructed using a post-breeding census with 8 size classes: seed, seedling, juvenile, pre-reproductive, and 4 reproductive classes divided by leaf area.

References

Horvitz, C.C. and D.W. Schemske. 1995. Spatiotemporal variation in demographic transitions of a tropical understory herb: Projection matrix analysis. Ecological Monographs 65:155-192.

Examples

# NOT RUN {
data(calathea)
## Single matrix
calathea[[11]]
image2(calathea[[11]], text.cex=.8)
title( paste("Calathea", names(calathea[11])), line=3)

## MEAN matrix (exclude pooled matrix)
mean(calathea[-17])

## all plot 1
calathea[1:4]
## all 1982 matrices 
calathea[ grep("1982", names(calathea)) ]
# OR
# calathea[seq(1,16,4)]
# split(calathea, 1:4)[[1]]

## Growth rates -see Figure 7
x<-sapply(calathea[-17], lambda)
x<-matrix(x, nrow=4, byrow=TRUE, dimnames= list(paste("plot", 1:4), 1982:1985))
x
matplot2(x, type='b', ylab='Growth rate', main='Calathea growth rates')


# }