richRarefy: Sample-based rarefaction curves
In wiqid: Quick and Dirty Estimates for Wildlife Populations
richRarefy R Documentation
Sample-based rarefaction curves
Description
Uses Mao's tau estimator (Colwell et al, 2004) to obtain a rarefaction curve indicating the expected number of species observed if fewer samples were collected.
Usage
richRarefy(incmat)
Arguments
incmat
a 1/0 matrix of species incidence (presence), species x sites. A matrix of counts may also be provided.
Value
A matrix with columns for the estimate and its standard deviation and rows for the number of samples pooled. Confidence limits may be obtained with estimate +/- 1.96 * SD.
Author(s)
Mike Meredith
References
Colwell, R. K., C. X. Mao, & J. Chang. 2004. Interpolating, extrapolating, and comparing incidence-based species accumulation curves. Ecology 85, 2717-2727.
Examples
data(seedbank)
plot(richRarefy(seedbank)[, 1], type='l')
wiqid documentation built on Nov. 18, 2022, 1:07 a.m.
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| richRarefy | R Documentation |
Sample-based rarefaction curves
Description
Uses Mao's tau estimator (Colwell et al, 2004) to obtain a rarefaction curve indicating the expected number of species observed if fewer samples were collected.
Usage
richRarefy(incmat)
Arguments
incmat |
a 1/0 matrix of species incidence (presence), species x sites. A matrix of counts may also be provided. |
Value
A matrix with columns for the estimate and its standard deviation and rows for the number of samples pooled. Confidence limits may be obtained with estimate +/- 1.96 * SD.
Author(s)
Mike Meredith
References
Colwell, R. K., C. X. Mao, & J. Chang. 2004. Interpolating, extrapolating, and comparing incidence-based species accumulation curves. Ecology 85, 2717-2727.
Examples
data(seedbank) plot(richRarefy(seedbank)[, 1], type='l')
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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