treepipit {maxstat}R Documentation

Tree Pipit Data

Description

Counts of tree pipits at 86 raster points in oak forests.

Usage

data(treepipit)

Format

A data frame with 86 observations on the following 2 variables.

counts
number of tree pipits counted.
coverstorey
canopy overstorey in percent.

Details

The influence of canopy overstorey on the number of bird individuals is of special interest.

Source

Data collected and kindly provided by Joerg Mueller <mue@lwf.uni-muenchen.de>.

References

Mueller J. and Hothorn T. (2003), On the Identification and Assessment of Habitat Patterns with Impact in Breeding Bird Communities in Oak Forests. submitted manuscript.

Examples

data(treepipit)
mod <- maxstat.test(counts ~ coverstorey, data = treepipit, 
                    smethod = "Data", pmethod = "HL", minprop = 0.2,
                    maxprop = 0.8)
print(mod)
plot(mod)

[Package maxstat version 0.7-12 Index]