ex0822 {Sleuth2}

Ecosystem Decay

Description

Data are the number of butterfly species in 16 islands of forest of various sizes in otherwise cleared areas in Brazil.

Usage

ex0822

Format

A data frame with 16 observations on the following 2 variables.

Area

area (ha) of forest patch

Species

number of butterfly species

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

Lovejoy, T.E., Rankin, J.M., Bierregaard, Jr., R.O., Brown, Jr., K.S., Emmons, L.H. and van der Voort, M. (1984). Ecosystem decay of Amazon forest remnants in Nitecki, M.H. (ed.) Extinctions, University of Chicago Press.

Examples

str(ex0822)