spec_sample: Sample species richness
In mobsim: Spatial Simulation and Scale-Dependent Analysis of Biodiversity Changes

Expected species richness in a random sample of fixed size.

1	spec_sample(abund_vec, n)

`abund_vec`	Species abundance distribution of the community (integer vector)
`n`	Sample size in terms of number of individuals (integer)

The expected number of species is calculated after Hurlbert 1971, Equation 3.

spec_sample is similar to the function rarefy in the R package vegan.

Expected number of species in a sample of n individuals

Hurlbert, S.H. 1971. The nonconcept of species diversity: a critique and + alternative parameters. Ecology 52, 577-586.

1 2	sad1 <- sim_sad(100, 1000) spec_sample(abund_vec = sad1, n = 20)

mobsim documentation built on March 23, 2021, 1:09 a.m.

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