Compute niche equivalency for two species following Warren et al. (2009). The statistic ranges from 0 to 1.
nicheEquivalency(sp1, sp2, predictors, n=99, model=maxent, verbose=TRUE, ...)
coordinates for species 1 (matrix with (x, y) or (lon, lat), or SpatialPoints)
coordinates for species 2 (matrix with (x, y) or (lon, lat), or SpatialPoints)
Raster object with environmental variables
integer. Number of randomizations
function. modeling algorithm to me used
logical. If TRUE
some progress indicators are printed
additional arguments (none)
numeric
Warren, D.L., R.E. Glor, M. Turelli, 2008. Environmental niche equivalency versus conservatism: quantitative approaches to niche evolution. Evolution 62:2868-2883.