coin (version 1.0-24)

treepipit: Tree Pipit (Anthus trivialis) Forest Data

Description

Data on the population density of tree pipits in Franconian oak forests including variables describing the forest ecosystem.

Usage

data("treepipit")

Details

This study is based on fieldwork conducted in three lowland oak forests in the Franconian region of northern Bavaria close to Uffenheim, Germany. Diurnal breeding birds were samples from March to June 2002 five times, using a quantitative grid mapping. Each grid was a 1-ha square. In total, 86 sample sites weres established. All individuals were counted in time intervals of 7 min/grid during slow walks along the middle of the grid with a stop in the centre. Environmental factors were measured for each grid.

References

J"org M"uller & Torsten Hothorn (2004). Maximally selected two-sample statistics as a new tool for the identification and assessment of habitat factors with an application to breeding bird communities in oak forests. European Journal of Forest Research 123, 219--228.

Examples

maxstat_test(counts ~ age + coverstorey + coverregen + meanregen +
                        coniferous + deadtree + cbpiles + ivytree,
               data = treepipit)