untb v1.2-15


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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
fisher Various functionality to implement Fisher's logseries
copepod Copepod data supplied by Phil Pugh
no.of.ind Ecosystem diagnostics
census Construct, coerce, and test for a census object
+.count Add two count objects
rand.neutral Random neutral ecosystem
display.untb Animation of neutral ecological drift
simpson Simpson's diversity index
untb Ecological drift simulation under the Unified Neutral Theory of Biodiversity
saunders Dataset due to Saunders
etienne Etienne's sampling formula
print.preston Print and plot objects of class Preston
logkda Etienne's K(D,A)
butterflies abundance data for butterflies
alonso Various functions from Alonso and McKane 2004
plot.count Abundance curves
print.summary.count Print method for summary objects
logS1 logarithms of Stirling numbers of the first kind
vallade Various functions from Vallade and Houchmandzadeh
preston Preston diagram of an ecosystem
expected.abundance Expected abundances under the neutral model
isolate Randomly select a subset of an ecosystem
theta.prob Posterior probabilities for theta
untb-package Unified neutral theory of biodiversity
summary.count Summary methods for count and census objects
extractor Extract rows of a database in count form
sahfos Biodiversity dataset provided by SAHFOS
phi Hubbell's phi
volkov Expected frequency of species
count Construct, coerce, and test for a count object
optimal.prob Returns an estimate of the fundamental biodiversity number
species.count Ecosystem diagnostics for output of untb()
zsm Zero sum multinomial distribution as derived by McKane
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Type Package
Date 2005-10-26
SystemRequirements PARI/GP >= 2.3.0 [strongly recommended for logkda()]
License GPL
Packaged Thu May 10 10:00:05 2007; rksh

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