untb v1.3-0


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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
phi Hubbell's phi
display.untb Animation of neutral ecological drift
alonso Various functions from Alonso and McKane 2004
plot.count Abundance curves
expected.abundance Expected abundances under the neutral model
untb-package Unified neutral theory of biodiversity
theta.prob Posterior probabilities for theta
sahfos Biodiversity dataset provided by SAHFOS
untb Ecological drift simulation under the Unified Neutral Theory of Biodiversity
volkov Expected frequency of species
extractor Extract rows of a database in count form
logS1 logarithms of Stirling numbers of the first kind
saunders Dataset due to Saunders
bci Barro Colorado Island (BCI) dataset
count Construct, coerce, and test for a count object
butterflies abundance data for butterflies
optimal.prob Returns an estimate of the fundamental biodiversity number
isolate Randomly select a subset of an ecosystem
species.count Ecosystem diagnostics for output of untb()
rand.neutral Random neutral ecosystem
fisher Various functionality to implement Fisher's logseries
logkda Etienne's K(D,A)
print.preston Print and plot objects of class Preston
simpson Simpson's diversity index
vallade Various functions from Vallade and Houchmandzadeh
zsm Zero sum multinomial distribution as derived by McKane
+.count Add two count objects
copepod Copepod data supplied by Phil Pugh
print.summary.count Print method for summary objects
etienne Etienne's sampling formula
census Construct, coerce, and test for a census object
summary.count Summary methods for count and census objects
no.of.ind Ecosystem diagnostics
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Last month downloads


Type Package
Date 2007-06-07
SystemRequirements PARI/GP >= 2.3.0 [strongly recommended for logkda()]
License GPL
Packaged Mon Jun 11 06:43:50 2007; rksh

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