Environmental variables and bird counts for identifying suitable bird habitats
A data frame with 258 observations on the following 10 variables.
Growing stock per grid
Mean diameter of the largest three trees
Age of oldest tree
Age of forest stand
Amount of dead wood of conifers
Amount of logs per grid
grid location, x coordinate
grid location, y coordinate
observed number of birds from structural gild 4: Requirement of regeneration (Phylloscopus trochilus, Aegithalos caudatus)
observed number of birds from structural gild 5: Requirement of regeneration combined with planted conifers (Phylloscopus collybita, Turdus merula, Sylvia atricapilla).
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.
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
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.
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