Blossom (version 1.4)

prefer: Habitat preference data for pheasants

Description

Habitat preference data for 13 pheasants using 5 cover types (Aebischer et al. 1993) for randomized block analyses.

Usage

data(prefer)

Format

A data frame with 26 observations on the following 7 variables.

scrub

Percentage of scrub cover type.

broad

Percentage of broadleaf woodland cover type.

conifer

Percentage of conifer woodland cover type.

grass

Percentage of grass cover type.

crop

Percentage of crop cover type.

use

Grouping value taking a 1 if used by a bird and a 0 if available habitat.

bird

The numbers 1 to 13 indicating individual birds.

Source

Aebischer, N.J., P. A. Robertson, and R.E. Kenward. 1993. Compositional analysis of habitat use from animal radio-tracking data. Ecology 74, 1313--1323.

Details

In the randomized block analysis of this data, bird is the blocking factor and use is the treatment groups. Note the available habitat (use = 0) percentages are assumed constant across all birds.

Examples

str(prefer)
  boxplot(prefer[1:13,1:5],main = "Percent habitat in the home range of 13 ring-necked pheasants")
     mtext("red dots indicate percent habitat available for each land cover class")
     points(seq(1:5),prefer[14,1:5],cex = 2,pch = 21,bg = "red")