untb v1.3-2


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by Robin Hankin

ecological drift under the UNTB

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.

Functions in untb

Name Description
preston Preston diagram of an ecosystem
plot.count Abundance curves
summary.count Summary methods for count and census objects
volkov Expected frequency of species
sahfos Biodiversity dataset provided by SAHFOS
phi Hubbell's phi
vallade Various functions from Vallade and Houchmandzadeh
optimal.prob Returns an estimate of the fundamental biodiversity number
untb-package Unified neutral theory of biodiversity
+.count Add two count objects
untb Ecological drift simulation under the Unified Neutral Theory of Biodiversity
zsm Zero sum multinomial distribution as derived by McKane
etienne Etienne's sampling formula
alonso Various functions from Alonso and McKane 2004
logkda Etienne's K(D,A)
print.summary.count Print method for summary objects
count Construct, coerce, and test for a count object
butterflies abundance data for butterflies
expected.abundance Expected abundances under the neutral model
isolate Randomly select a subset of an ecosystem
no.of.ind Ecosystem diagnostics
census Construct, coerce, and test for a census object
extractor Extract rows of a database in count form
display.untb Animation of neutral ecological drift
species.count Ecosystem diagnostics for output of untb()
rand.neutral Random neutral ecosystem
saunders Dataset due to Saunders
simpson Simpson's diversity index
logS1 logarithms of Stirling numbers of the first kind
theta.prob Posterior probabilities for theta
bci Barro Colorado Island (BCI) dataset
copepod Copepod data supplied by Phil Pugh
fisher Various functionality to implement Fisher's logseries
print.preston Print and plot objects of class Preston
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Type Package
Date 2007-06-07
SystemRequirements PARI/GP >= 2.3.0 [strongly recommended for logkda()]
License GPL
URL http://www.r-project.org
Packaged Thu Oct 4 06:44:54 2007; rksh

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