datana (version 1.0.6)

pcontorta: Contains spatial location of Pinus contorta trees in sample plots.

Description

These are tree-level measurement data, with cartesian location of each tree, from Pinus contorta invasion in Patagonian steppe in Coyhaique in southhern Chile, measured in 2011. There are 3 plots, each of 10.000 m\(^{2}\).

Usage

data(pcontorta)

Format

Contains eight variables, as follows:

plot.id

Plot sample ID.

tree.id

Tree identificator number in each plot. Same indv/id for multi-stem trees.

y.coord

coordinate of S latitude.

x.coord

coordinate of W longitude.

substrate

Ground cover in which each pine grow. Bare soil, Festuca pallescens, Baccharis magellanica, Oreopulus glacialis, Acaena integerrima and others species.

drc

Diameter at the root collar on trees, in mm.

h

Height of trees, in cm.

canopy.area

Proyection of canopy area of each tree, in square meters.

References

Pauchard A, Escudero A, García RA, de la Cruz M, Langdon B, Cavieres LA, Esquivel J. 2016. Pine invasions in treeless environments: dispersal overruns microsite heterogeneity. Ecology and Evolution. 6(2): 447-459.

Examples

data(pcontorta)    
head(pcontorta)
unique(pcontorta$plot.id)