homoteneity {labdsv}

Homoteneity Analysis of Classified Ecological Communities

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

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 [e-mail]

See Also

const, concov

Examples

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