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]