homoteneity: Homoteneity Analysis of Classified Ecological Communities

Description Usage Arguments Value Note Author(s) See Also Examples

Description

Homoteneity is defined as ‘the mean constancy of the S most constant species, expressed as a fraction, where S is the mean species richness of a type.’

Usage

1
homoteneity(comm,clustering)

Arguments

comm

a data.frame of species abundances with samples as rows and species as columns

clustering

a vector of (integer) class memberships, or an object of class ‘clustering’, class ‘partana’, or class partition

Value

A data.frame of homoteneity values

Note

This function was adapted from the Virginia Heritage Program at

http://www.dcr.virginia.gov/natural_heritage/ncstatistics.shtml

Author(s)

David W. Roberts droberts@montana.edu http://ecology.msu.montana.edu/droberts/droberts.html

See Also

const, concov

Examples

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data(bryceveg) # returns a data.frame of species in sample plots   
data(brycesite) # returns a data.frame of site variables
homoteneity(bryceveg,brycesite$quad) # analysis of species constancy
                                     # by USGS quad location

Example output

Loading required package: mgcv
Loading required package: nlme
This is mgcv 1.8-28. For overview type 'help("mgcv-package")'.
Loading required package: MASS
Loading required package: cluster

Attaching package: 'labdsv'

The following object is masked from 'package:stats':

    density

  cluster homoteneity
1       1   0.4769231
2       2   0.3515385
3       3   0.6753846
4       4   0.7446154
5       5   0.3646154
6       6   0.6838462

labdsv documentation built on Aug. 4, 2019, 5:03 p.m.

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