BSsucc: Secondary succession data

Description Usage Format Source References Examples

Description

Functional group abundances (herbaceous annual, herbaceous perennial, woody) from one of the fields in the Buell-Small long term succession study (http://www.ecostudies.org/bss/). Data are based on visual estimates of percent cover, using annual means of each species, which are then summed for each functional group.

Usage

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Format

A data frame with 147 observations on the following 3 variables.

AGE

a numeric vector; indicates the age of succession since abandonment from agriculture.

variable

plant functional type; a factor with levels Annual, Perennial, Woody

value

a numeric vector

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

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data(BSsucc)
library(lattice)
print(xyplot(value~ AGE, groups=variable, data=BSsucc, 
             type='smooth', span=.3, ylab="Percent Cover",
             xlab="Age Since Abandonment (y)",
             auto.key=list(columns=3, space="top", lines=TRUE, points=FALSE)))

primer documentation built on May 29, 2017, 11:26 p.m.