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.
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.
Source
Aebischer, N.J., P. A. Robertson, and R.E. Kenward. 1993. Compositional analysis of habitat use from animal radio-tracking data. Ecology74, 1313–1323.
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")
Results
R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
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> library(Blossom)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/Blossom/prefer.Rd_%03d_medium.png", width=480, height=480)
> ### Name: prefer
> ### Title: Habitat preference data for pheasants
> ### Aliases: prefer
> ### Keywords: datasets
>
> ### ** Examples
>
> str(prefer)
'data.frame': 26 obs. of 7 variables:
$ scrub : num 19.6 20.58 8.32 8.78 4.41 ...
$ broad : num 1.97 14.7 5.73 23.86 30.29 ...
$ conifer: num 0 0 0 0 10.3 ...
$ grass : num 0 0.4 58.9 12.2 55 ...
$ crop : num 78.4 64.3 27 55.1 0 ...
$ use : int 1 1 1 1 1 1 1 1 1 1 ...
$ bird : int 1 2 3 4 5 6 7 8 9 10 ...
> 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")
>
>
>
>
>
> dev.off()
null device
1
>