niche_difer2

Estimate the niche overlapping (index D) between two species. Assume that the niche is rectangular.
Columns (i.e. environmental variables) in 'spe_chr1' and 'sp_chr2' have to be the same.

A simple method to display and characterise the multidimensional ecological niche of a species. The method also estimates the optimums and amplitudes along each niche dimension. Give also an estimation of the degree of niche overlapping between species. See Kleparski and Beaugrand (2022) <doi:10.1002/ece3.8830> for further details.

Loick Kleparski

specieschrom

The Species Chromatogram

Gregory Beaugrand

Universite Littoral Cote d'Opale (ULCO) 

niche_difer2 function

<dl><dt>sp_chr1</dt>
<dd>a matrix (niche categories by environmental variables) for species 1</dd>
<dt>sp_chr2</dt>
<dd>a matrix (niche categories by environmental variables) for species 2</dd>
<dt>Thres_T</dt>
<dd>an integer corresponding to the threshold of minimal abundance in a category for the niche breadth estimation</dd></dl>

Arguments

Nested function for niche overlapping estimation with 'combina_niche3.R' and 'niche_differ_sp.R'. — niche_difer2

<dl>

<dt>sp_chr1</dt>
<dd>a matrix (niche categories by environmental variables) for species 1</dd>


<dt>sp_chr2</dt>
<dd>a matrix (niche categories by environmental variables) for species 2</dd>


<dt>Thres_T</dt>
<dd>an integer corresponding to the threshold of minimal abundance in a category for the niche breadth estimation</dd>

</dl>

niche_difer2: Nested function for niche overlapping estimation with 'combina_niche3.R' and 'niche_differ_sp.R'.

Description

Usage

Value

Arguments