Boostrap the niche overlap indices

bootstrap the niche overlap indices between a pair of species. This is an internal function used by niche.overlap.boot, use niche.overlap.boot instead.

niche.overlap.boot.pair(vectorA, vectorB, method = c("levins",
     "schoener", "petraitis", "pianka", "czech", "morisita"),
      times = 1000, quant = c(0.025, 0.975))

Arguments

vectorA	A numeric vector containing species A's abundance or importance value.
vectorB	A numeric vector containing species B's abundance or importance value.
method	Name of the index to use.
times	Number of bootstraps
quant	Confidence intervals of the bootstrap results.

Value

This function will return a vector containing:\ "Observed", \ "Boot mean", \ "Boot std", \ "Boot CI1", \ "Boot CI2", \ "times" \

References

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

Author

Jinlong Zhang jinlongzhang01@gmail.com

Note

This is an internal function, please use niche.overlap.boot.

See also

niche.overlap.boot

Examples

data(datasample)
niche.overlap.boot.pair(datasample[,1], datasample[,2], method = "levins")
#>  Observed Boot mean  Boot std  Boot CI1  Boot CI2     times 
#>     0.921     0.927     0.054     0.814     1.031  1000.000