primer (version 0.1)

weeds: Percent cover of six perennial herbaceous plants

Description

Percent cover of six of the most common herbaceous perennial species from the Buell-Small long term succession study (http://www.ecostudies.org/bss/). Data are plot-level visual estimates of percent cover.

Usage

data(weeds)

source

Data graciously provided by Scott Meiners (Eastern Illinois University, http://www.ecostudies.org/bss/).

References

Stevens, M.H.H. 2009. A Primer of Ecology with R. Use R! Series. Springer.

Examples

data(weeds)
str(weeds); 
library(lattice)
xyplot(Cover ~ Age, data=weeds, groups=Species, type=c("a"),
auto.key=list(lines=TRUE, points=FALSE, columns=3),
ylim=c(-1,20))