socrex90.neigh {CTFS}R Documentation

Structure of Datasets for Density Dependence Analysis

Description

This file can be used to investigate the effect of neighborhood attributes (density and basal area) on the population structure and dynamics of focal species. The file contains the number and basal area of conspecific and heterospecific trees for given neighborhood distances (annuli) around each tree of a single species.

Usage

data(socrex90.neigh)

Format

A data frame for the species “socrex” with 1133 observations on the following 17 variables.

tag
a numeric vector, tree identification number for a tree of “socrex”
Ncon.0.5
a numeric vector, number of conspecific trees >=0 and < 5 m from the tag tree
Ncon.5.10
a numeric vector, number of conspecific trees >=05 and < 10 m from the tag tree
Ncon.10.20
a numeric vector, number of conspecific trees >=10 and < 20 m from the tag tree
Ncon.20.30
a numeric vector, number of conspecific trees >=20 and < 30 m from the tag tree
BAcon.0.5
a numeric vector, total basal area of conspecific trees >=0 and < 5 m from the tag tree
BAcon.5.10
a numeric vector, total basal area of conspecific trees >=5 and < 10 m from the tag tree
BAcon.10.20
a numeric vector, total basal area of conspecific trees >=10 and < 20 m from the tag tree
BAcon.20.30
a numeric vector, total basal area of conspecific trees >=20 and < 30 m from the tag tree
Nhet.0.5
a numeric vector, number of heterospecific trees >=0 and < 5 m from the tag tree
Nhet.5.10
a numeric vector, number of heterospecific trees >=05 and < 10 m from the tag tree
Nhet.10.20
a numeric vector, number of heterospecific trees >=10 and < 20 m from the tag tree
Nhet.20.30
a numeric vector, number of heterospecific trees >=20 and < 30 m from the tag tree
BAhet.0.5
a numeric vector, total basal area of heterospecific trees >=0 and < 5 m from the tag tree
BAhet.5.10
a numeric vector, total basal area of heterospecific trees >=5 and < 10 m from the tag tree
BAhet.10.20
a numeric vector, total basal area of heterospecific trees >=10 and < 20 m from the tag tree
BAhet.20.30
a numeric vector, total basal area of heterospecific trees >=20 and < 30 m from the tag tree

Details

This data file is the result of neighbordens.1sp. It was created using the default neighborhood distances, gridsize and plot dimensions:

socrex90.neigh <- neighbordens.1sp("socrex",tst.bci90.quad, tst.bci90.spp)

Source

The Center for Tropical Forest Science
http://www.ctfs.si.edu

Examples

## Not run: 
data(socrex90.neigh)
str(socrex90.neigh)
## End(Not run)

[Package CTFS version 1.00 Index]