ecospat.niche.overlap

0th

Percentile

Calculate Niche Overlap

Calculate the overlap metrics D and I based on two species occurrence density grids z1 and z2 created by ecospat.grid.clim.

Usage
ecospat.niche.overlap (z1, z2, cor)
Arguments
z1
Species 1 occurrence density grid created by ecospat.grid.clim.
z2
Species 2 occurrence density grid created by ecospat.grid.clim.
cor
Correct the occurrence densities of each species by the prevalence of the environments in their range (T = yes, F = no).
Details

if cor=F, the z$uncor objects created by ecospat.grid.clim are used to calculate the overlap. if cor=T, the z$cor objects are used.

Value

References

Broennimann, O., M.C. Fitzpatrick, P.B. Pearman, B. Petitpierre, L. Pellissier, N.G. Yoccoz, W. Thuiller, M.J. Fortin, C. Randin, N.E. Zimmermann, C.H. Graham and A. Guisan. 2012. Measuring ecological niche overlap from occurrence and spatial environmental data. Global Ecology and Biogeography, 21, 481-497.

Schoener, T.W. 1968. Anolis lizards of Bimini: resource partitioning in a complex fauna. Ecology, 49, 704-726.

Warren, D.L., R.E. Glor and M. Turelli. 2008. Environmental niche equivalency versus conservatism: quantitative approaches to niche evolution. Evolution, 62, 2868-2883.

See Also

ecospat.grid.clim.dyn

Aliases
  • ecospat.niche.overlap
Documentation reproduced from package ecospat, version 2.0, License: GPL

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