Takes a resource utilization matrix as input and
returns the average pairwise Czekanowki niche overlap index.
Usage
czekanowski(m = matrix(rpois(80, 1), nrow = 10))
Arguments
m
a matrix of resource utilization values.
Value
Returns the average pairwise niche overlap.
Details
The Czekanowski niche overlap index is averaged
over each unique species pair. The index measures the area of intersection
of the resource utilization histograms of each species pair.
Values of Czekanowski niche overlap index close to 0.0
reflect usage of exclusive resource categories, whereas values close to 1.0
reflect similar resource utilization spectra.