abd (version 0.2-8)

Truffles: Truffle Distribution

Description

Number of truffles per plot for 288 plots in an old growth forest in northeastern California.

Format

A data frame with 5 observations on the following 2 variables.

truffles

a numeric vector

count

a numeric vector

Source

Waters, J.R., K.S. McKelvey, D.L. Luoam, and C.J. Zabel. 1997. Truffle production in old-growth and mature fir stands in northeastern California. Forest Ecology and Management 96: 155-166.

References

http://www.fs.fed.us/psw/publications/watersj/waters2.PDF

Examples

Truffles
xyplot(count ~ truffles, Truffles, type='h', lwd=4)
barchart(count ~ truffles, Truffles, origin=0, horizontal=FALSE)