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untb (version 1.6-4)

ecological drift under the UNTB

Description

A collection of utilities for biodiversity data. Includes the simulation of ecological drift under Hubbell's Unified Neutral Theory of Biodiversity, and the calculation of various diagnostics such as Preston curves. Now includes functionality provided by Francois Munoz and Andrea Manica.

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Version

Install

install.packages('untb')

Monthly Downloads

186

Version

1.6-4

License

GPL

Maintainer

Robin K S Hankin

Last Published

October 20th, 2010

Functions in untb (1.6-4)

plot.count

Abundance curves
alonso

Various functions from Alonso and McKane 2004
count

Construct, coerce, and test for a count object
preston

Preston diagram of an ecosystem
bci

Barro Colorado Island (BCI) dataset
fisher

Various functionality to implement Fisher's logseries
optimal.params.sloss

Estimation of neutral community parameters using a two-stage maximum-likelihood procedure
no.of.ind

Ecosystem diagnostics
untb

Ecological drift simulation under the Unified Neutral Theory of Biodiversity
print.preston

Print and plot objects of class Preston
expected.abundance

Expected abundances under the neutral model
isolate

Randomly select a subset of an ecosystem
extractor

Extract rows of a database in count form
caruso

Dataset due to Caruso
ghats

Tree counts in 1-ha plots from the Western Ghats mountains (South India)
optimal.params.gst

Estimation of local immigration using GST(k) statistics
simpson

Simpson's diversity index
species.count

Ecosystem diagnostics for output of untb()
butterflies

abundance data for butterflies
display.untb

Animation of neutral ecological drift
rand.neutral

Random neutral ecosystem
theta.prob

Posterior probabilities for theta
vallade

Various functions from Vallade and Houchmandzadeh
untb-package

Unified neutral theory of biodiversity
etienne

Etienne's sampling formula
logS1

logarithms of Stirling numbers of the first kind
+.count

Add two count objects
phi

Hubbell's phi
copepod

Copepod data supplied by Phil Pugh
logkda

Etienne's K(D,A)
volkov

Expected frequency of species
sahfos

Biodiversity dataset provided by SAHFOS
summary.count

Summary methods for count and census objects
census

Construct, coerce, and test for a census object
optimal.prob

Returns an estimate of the fundamental biodiversity number
saunders

Dataset due to Saunders
print.summary.count

Print method for summary objects
zsm

Zero sum multinomial distribution as derived by McKane