sars2.1.1 package

Fit and Compare Species-Area Relationship Models Using Multimodel Inference

coleman

Fit Coleman's Random Placement Model

countryside_extrap

Use a sar_countryside() model object to predict richness

display_sars_models

Display the model information table

gdm

Fit the General Dynamic Model of Island Biogeography

get_coef

Calculate the intercepts and slopes of the different segments

lin_pow

Fit the log-log version of the power model

logLik.thresholdInt

Extract Log-Likelihood for the thresholdInt class

plot.coleman

Plot Model Fits for a 'coleman' Object

plot.habitat

Plot Options For a 'habitat' Object

plot.multi

Plot Model Fits for a 'multi' Object

plot.sars

Plot Model Fits for a 'sars' Object

plot.threshold

Plot Model Fits for a 'threshold' Object

sar_asymp

Fit the Asymptotic regression model

sar_average

Fit a multimodel averaged SAR curve

sar_betap

Fit the Beta-P cumulative model

sar_chapman

Fit the Chapman Richards model

sar_countryside

Fit the countryside SAR model

sar_epm1

Fit the Extended Power model 1 model

sar_epm2

Fit the Extended Power model 2 model

sar_gompertz

Fit the Gompertz model

sar_habitat

Fit habitat SAR models

sar_heleg

Fit the Heleg(Logistic) model

sar_koba

Fit the Kobayashi model

sar_linear

Fit the linear model

sar_loga

Fit the Logarithmic model

sar_logistic

Fit the Logistic(Standard) model

sar_mmf

Fit the MMF model

sar_monod

Fit the Monod model

sar_multi

Create a Collection of SAR Model Fits

sar_negexpo

Fit the Negative exponential model

sar_p1

Fit the Persistence function 1 model

sar_p2

Fit the Persistence function 2 model

sar_power

Fit the Power model

sar_powerR

Fit the PowerR model

sar_pred

Use SAR model fits to predict richness on islands of a given size

sar_ratio

Fit the Rational function model

sar_threshold

Fit threshold SAR models

sar_weibull3

Fit the Cumulative Weibull 3 par. model

sar_weibull4

Fit the Cumulative Weibull 4 par. model

sars_models

Display the 21 SAR model names

sars-package

sars: Fit and compare species-area relationship models using multimode...

summary.sars

Summarising the results of the model fitting functions

threshold_ci

Calculate confidence intervals around breakpoints

Implements the basic elements of the multi-model inference paradigm for up to twenty species-area relationship models (SAR), using simple R list-objects and functions, as in Triantis et al. 2012 <DOI:10.1111/j.1365-2699.2011.02652.x>. The package is scalable and users can easily create their own model and data objects. Additional SAR related functions are provided.

  • Maintainer: Thomas J. Matthews
  • License: GPL-3 | file LICENSE
  • Last published: 2026-01-07