dismo (version 1.1-1)

nicheEquivalency: Niche equivalency

Description

Compute niche equivalency for two species following Warren et al. (2009). The statistic ranges from 0 to 1.

Usage

nicheEquivalency(sp1, sp2, predictors, n=99, model=maxent, verbose=TRUE, ...)

Arguments

sp1

coordinates for species 1 (matrix with (x, y) or (lon, lat), or SpatialPoints)

sp2

coordinates for species 2 (matrix with (x, y) or (lon, lat), or SpatialPoints)

predictors

Raster object with environmental variables

n

integer. Number of randomizations

model

function. modeling algorithm to me used

verbose

logical. If TRUE some progress indicators are printed

...

additional arguments (none)

Value

References

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