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untb (version 1.6-5)

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

1.6-5

License

GPL

Maintainer

Robin K S Hankin

Last Published

March 18th, 2011

Functions in untb (1.6-5)

bci

Barro Colorado Island (BCI) dataset
extractor

Extract rows of a database in count form
ghats

Tree counts in 1-ha plots from the Western Ghats mountains (South India)
isolate

Randomly select a subset of an ecosystem
logkda

Etienne's K(D,A)
optimal.params.gst

Estimation of local immigration using GST(k) statistics
preston

Preston diagram of an ecosystem
simpson

Simpson's diversity index
saunders

Dataset due to Saunders
summary.count

Summary methods for count and census objects
rand.neutral

Random neutral ecosystem
vallade

Various functions from Vallade and Houchmandzadeh
alonso

Various functions from Alonso and McKane 2004
untb-package

Unified neutral theory of biodiversity
butterflies

abundance data for butterflies
copepod

Copepod data supplied by Phil Pugh
caruso

Dataset due to Caruso
count

Construct, coerce, and test for a count object
phi

Hubbell's phi
census

Construct, coerce, and test for a census object
etienne

Etienne's sampling formula
untb

Ecological drift simulation under the Unified Neutral Theory of Biodiversity
species.count

Ecosystem diagnostics for output of untb()
expected.abundance

Expected abundances under the neutral model
display.untb

Animation of neutral ecological drift
fisher

Various functionality to implement Fisher's logseries
sahfos

Biodiversity dataset provided by SAHFOS
zsm

Zero sum multinomial distribution as derived by McKane
print.summary.count

Print method for summary objects
logS1

logarithms of Stirling numbers of the first kind
no.of.ind

Ecosystem diagnostics
print.preston

Print and plot objects of class Preston
theta.prob

Posterior probabilities for theta
optimal.prob

Returns an estimate of the fundamental biodiversity number
optimal.params.sloss

Estimation of neutral community parameters using a two-stage maximum-likelihood procedure
volkov

Expected frequency of species
plot.count

Abundance curves
+.count

Add two count objects