BSsucc {primer}

Secondary succession data

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.

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

data(BSsucc)
#lattice::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))