sar: Species area relationship

In TobiasRoth/BDM: Collection of functions to analyze biodiversity data from Switzerland

Description

The function can be used to standardize measures of species richness that where sampled from sites that differ in size. Note that all measures with zero species will be removed without furhter warning.

Usage

sar(SR, A, stand, minA)

Arguments

SR	Vector with measured number of species (species richness).
A	Vector with same length as SR that contains the size of area within which SR were sampled.
stand	Sample area for which species richness should be predicted.
minA	Remove all samples that with sampler area smaler than 'minA'.

Value

Predicted species richness for a sample area with stand area.

Examples

sar(SR = rpois(20, 60), A = rnorm(20 ,100, 25), stand = 200, minA = 20)

TobiasRoth/BDM documentation built on May 6, 2019, 8:32 p.m.