R: Habitat Suitability for Breeding Bird Communities
birds
R Documentation
Habitat Suitability for Breeding Bird Communities
Description
Environmental variables and bird counts for identifying
suitable bird habitats
Usage
data("birds")
Format
A data frame with 258 observations on the following 10 variables.
GST
Growing stock per grid
DBH
Mean diameter of the largest three trees
AOT
Age of oldest tree
AFS
Age of forest stand
DWC
Amount of dead wood of conifers
LOG
Amount of logs per grid
x_gk
grid location, x coordinate
y_gk
grid location, y coordinate
SG4
observed number of birds from structural gild 4:
Requirement of regeneration (Phylloscopus trochilus, Aegithalos caudatus)
SG5
observed number of birds from structural gild 5:
Requirement of regeneration combined with planted conifers (Phylloscopus collybita, Turdus
merula, Sylvia atricapilla).
Details
Counts of breeding bird
communities collected at 258 observation plots in a northern
Bavarian forest district are the response variable of interest.
Along with the number of birds in two structural gilds,
6 covariates are given here and
one is interested in quantifying their impact on habitat
suitability.
Source
Joerg Mueller (2005).
Forest structures as key factor for beetle and bird communities
in beech forests. PhD thesis, Munich University of Technology.
http://mediatum.ub.tum.de
References
Thomas Kneib and Joerg Mueller and Torsten Hothorn (2008),
Spatial smoothing techniques for the assessment of habitat suitability,
Environmental and Ecological Statistics,
15(3), 343–364.