calathea: Projection matrices for a tropical understory herb

In popbio: Construction and Analysis of Matrix Population Models

Projection matrices for a tropical understory herb

Description

Projection matrices for a tropical understory herb (Calathea ovandensis) for plots 1-4 in years 1982-1985 and the pooled matrix. Matrices were constructed using a post-breeding census with 8 size classes: seed, seedling, juvenile, pre-reproductive, and 4 reproductive classes divided by leaf area.

Usage

calathea

Format

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

Source

Table 7 in Horvitz and Schemske (1995). The pooled matrix is from Table 8.

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

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")

popbio documentation built on May 29, 2024, 4:35 a.m.