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]