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sads (version 0.6.5)

Maximum Likelihood Models for Species Abundance Distributions

Description

Maximum likelihood tools to fit and compare models of species abundance distributions and of species rank-abundance distributions.

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Install

install.packages('sads')

Monthly Downloads

4,761

Version

0.6.5

License

GPL-2

Issues

Pull Requests

Stars

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Maintainer

Paulo I Prado

Last Published

September 25th, 2025

Functions in sads (0.6.5)

dgs

Geometric series distribution
ARN82

Biomass of marine animals in colonizing experiments in Baltic Sea
distr

Continuous or discrete distributions
dbs

MacArthur's Broken-stick distribution
coverpred-methods

~~ Methods for Function coverpred in Package sads ~~
birds

Abundances of breeding birds in Quacker Run Valley, NY
coverpred-class

Class "coverpred" for predicted values for abundance classes
ICtab

Compute table of information criteria and auxiliary info
bci

Tree species abundance in Barro Colorado Island Plot
dpoig

Compound Poisson-gamma distribution
dpareto

Pareto distribution
dvolkov

Neutral Biodiversity Theory distribution by Volkov et al.
dtrunc

Left-truncation of density, probability and quantile of distributions
dpoix

Compound Poisson-Exponential distribution
dpoilog

Poisson-lognormal distribution
dpowbend

Puyeo's Power-bend discrete distribution
dpower

Power discrete distribution
dls

Fisher's Log-series distribution
dmand

Zipf-Mandelbrodt distribution
dzipf

Zipf distribution
fitsad

ML fitting of species abundance distributions
dmzsm

Metacommunity zero-sum multinomial distribution
likelregions-class

Class "likelregions" for likelihood profiles of maximum likelihood fits
fitrad

ML fitting of species rank-abundance distributions
fitsadC

ML fitting of species abundance distributions to data pooled in abundance classes
fitsad-class

Class "fitsad" for maximum likelihood fitting of species abundance distributions
moths

Moths caught with light traps at Rothamsted 1933-1936
fitsadC-class

Class "fitsadC" for maximum likelihood fitting of species abundance distributions from data in abundance classes
grasslands

Coverages of plants species in a plot in Southern Brazilian Grasslands
fitrad-class

Class "fitrad" for maximum likelihood fitting of species rank-abundance distributions
ppsad and pprad methods

Percentile-percentile plots for species-abundance and rank-abundance models
plotprofmle-methods

Log-likelihood profiles at original scale
rad

Rank-abundance data frame
octav-methods

Frequencies of species in octaves
rad-class

Class "rad" for rank-abundance data
octav-class

Class "octav" for frequencies in abundance octaves
qqsad and qqrad methods

Quantile-quantile plots for species-abundance and rank-abundance models
pred.logser

Predicted number of species by Fisher's Logseries
updatesad

Updating of MLE fits by profiling
summary.sads-class

Summary for fitsad/fitrad calls
octavpred-methods

Predicted frequencies of species in octaves
okland

Abundances of land snail species in Norway
trueLL-methods

True likelihood for continuous variables
sads-package

tools:::Rd_package_title("sads")
rsad

Sampling from a species abundance distribution
coefficients,fitsad-method

Standard stats methods
radpred-methods

Predicted ranked abundance of species