pinusSpp {datana}

Tree-level variables of several sample plots of invasive Pinus spp in Chile.

Description

These are tree-lavel measurement data from Pinus spp invasion in Araucaria-Nothofagus forests in the Malalcahuello National Reserve in La Araucania region in southhern Chile, measured in 2012. There are 26 plots and plot size is 100 m^{2}.

Usage

data(pinusSpp)

Format

Contains 8 variables, as follows:

plot.id

Plot sample ID.

plot.size

Plot size, en m^{2}.

lat.s

Decimal coordinate of S latitude.

long.w

Decimal coordinate of W longitude.

indv.id

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

stem.id

Stem identificator number in each plot.

spp

Specie.

dbh

Diameter at breast-height, in cm.

h

Height, in m.

hcb

Height to crown base, in m.

crown.lenght

Crown lenght, in m.

obs

Extra information.

Source

The data are provided courtesy of Drs. Anibal Pauchard and Rafael Garcia at the Laboratorio de Invasiones Biologicas, Universidad de Concepción (Chile).

References

Cobar-Carranza A, Garcia R, Pauchard A, Pena E. 2014. Effect of Pinus contorta invasion on forest fuel properties and its potential implications on the fire regime of Araucaria araucana and Nothofagus antarctica forests. Biological Invasions. 16(11): 2273 - 2291. doi:10.1007/s10530-014-0663-8

Examples

data(pinusSpp)    
head(pinusSpp) 
length(unique(pinusSpp$plot.id)) 
boxplot(dbh~plot.id, data=pinusSpp)