niche.overlap.boot: Boostrap niche overlap indices

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

View source: R/niche.overlap.boot.R

Description

Bootstrap niche overlap indices

Usage

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

Arguments

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.

Details

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).\

Value

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

Author(s)

Jinlong Zhang jinlongzhang01@gmail.com

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

See Also

niche.overlap.boot.pair

Examples

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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")

helixcn/spaa documentation built on Aug. 13, 2021, 3:21 a.m.