Produces a weighted matrix of spatial association between species from points of occurrence.
Object of class 'dotdata'
This function performs pairwise comparisons between species point sets. It calculates the average displacement required to achieve homopatry between species. If two species share all their records they are said to be homopatric (etymologically, with the same territory).
Given two sets of points A and B, the measure ACSH as described in Dos Santos et al. (2011) corresponds to the weighted average across the nearest interspecific distances between the elements of A and B. The weight assigned to each element is proportional to the mean length of MST arcs incident to it. Close affinity between distributions is suggested when they deliver an ACSH score near to zero.
Returns a matrix that expresses the dissimilarity between species point sets via non-negative real values.
Daniel A. Dos Santos <[email protected]>
Dos Santos D.A., Cuezzo M.G., Reynaga M.C., Dominguez E. 2011. Towards a Dynamic Analysis of Weighted Networks in Biogeography. Systematic Biology (in press).
Objects of class 'dotdata' are created via
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