niche.overlap.boot: Boostrap niche overlap indices
In helixcn/spaa: SPecies Association Analysis

Description Usage Arguments Details Value Author(s) References See Also Examples

Bootstrap niche overlap indices

1 2	niche.overlap.boot(mat, method = c("pianka", "schoener", "petraitis", "czech", "morisita", "levins"), times = 1000, quant = c(0.025, 0.975))

`mat`	standard community matrix.
`method`	character string specifying the index.
`times`	Interger, representing the number of bootstrap samples to generate.
`quant`	Quantile of the bootstrap values.

This function bootstraps the following niche overlap indices between each pair of species: \ schoener: Schoener's niche overlap index\ petraitis: Petraitis' niche overlap index\ czech: Czechanowski index \ morisita: Morisita's overlap index\ levins: Levin's overlap index\ see more information from Gotelli, N(2009).\

a data frame with each row for each pair of species the columns are "Observed", "Boot mean", "Boot std", "Boot CI1", "Boot CI2", "times"

Jinlong Zhang jinlongzhang01@gmail.com

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

niche.overlap.boot.pair

data(datasample)
niche.overlap.boot(datasample[,1:4], method = "pianka")
niche.overlap.boot(datasample[,1:4], method = "schoener")
niche.overlap.boot(datasample[,1:4], method = "czech")
niche.overlap.boot(datasample[,1:4], method = "levins")