CA_hell: Hellinger distance matrix

In petrkeil/spasm: Species association measures for various data types

Description

Calculates Hellinger distances for all pairs of species in a community matrix. In particular, the abundance data are Hellinger-transformed, and then used for calcluation of Euclidean distances. Note: Before the calculation, species (rows) with zero occurrences, and sites (columns) with zero species are removed from m.

Usage

CA_hell(m)

Arguments

m	Community data matrix with species as rows and sites as columns. Can contain either incidences (1/0) or abundances (natural numbers).

Value

A dist object with the pairwise values.

References

Legendre P. & De Caceres M. (2013) Beta diversity as the variance of community data: dissimilarity coefficients and partitioning. Ecology Letters 16: 951-963.

Legendre P. & Legendre L. (2012) Numerical Ecology. Elsevier. pp 265-335.

petrkeil/spasm documentation built on Jan. 15, 2021, 6:08 p.m.