Compute niche overlap index between two species

Compute niche overlap index between two species. This is an internal function, used niche.overlap instead.

niche.overlap.pair(vectA, vectB, method = c("pianka",
     "schoener","petraitis","czech","morisita", "levins"))

Arguments

vectA	A numeric vector containing species A's abundance or importance value
vectB	A numeric vector containing species B's abundance or importance value
method	Niche overlap index

Details

None

Value

The niche overlap index

References

Zhang Jin-tun,(2004 ) Quantitative Ecology, Science Press, Beijing

Nicholas J. Gotelli. 2000. Null model analysis of species co-occurrence patterns. Ecology 81:2606-2621. http://esapubs.org/archive/ecol/E081/022/EcoSim

Author

Jinlong Zhang jinlongzhang01@gmail.com

See also

niche.overlap

Examples

data(datasample)
niche.overlap.pair(datasample[,1],datasample[,2], method = "levins")
#> [1] 0.9206029