untb v1.2-5


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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
no.of.ind Ecosystem diagnostics
logkda Etienne's K(D,A)
phi Hubbell's phi
preston Preston diagram of an ecosystem
optimal.prob Returns an estimate of the fundamental biodiversity number
extractor Extract rows of a database in count form
etienne Etienne's sampling formula
plot.count Abundance curves
butterflies abundance data for butterflies
print.preston Print and plot objects of class Preston
copepod Copepod data supplied by Phil Pugh
saunders Dataset due to Saunders
sahfos Biodiversity dataset provided by SAHFOS
rand.neutral Random neutral ecosystem
summary.count Summary methods for count and census objects
print.summary.count Print method for summary objects
untb Ecological drift simulation under the Unified Neutral Theory of Biodiversity
fisher Various functionality to implement Fisher's logseries
expected.abundance Expected abundances under the neutral model
+.count Add two count objects
logS1 logarithms of Stirling numbers of the first kind
untb-package Unified neutral theory of biodiversity
species.count Ecosystem diagnostics for output of untb()
census Construct, coerce, and test for a census object
count Construct, coerce, and test for a count object
simpson Simpson's diversity index
theta.prob Posterior probabilities for theta
display.untb Animation of neutral ecological drift
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Type Package
Date 2005-10-26
License GPL
Packaged Thu Aug 31 21:37:24 2006; rksh
depends partitions
Contributors Robin S. Hankin

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