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untb (version 1.4-2)

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.

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Version

Install

install.packages('untb')

Monthly Downloads

363

Version

1.4-2

License

GPL

Maintainer

Robin K S Hankin

Last Published

March 30th, 2009

Functions in untb (1.4-2)

Various functionality to implement Fisher's logseries

expected.abundance

Expected abundances under the neutral model

Etienne's sampling formula

print.summary.count

Print method for summary objects

logarithms of Stirling numbers of the first kind

Expected frequency of species

Simpson's diversity index

Dataset due to Saunders

Various functions from Alonso and McKane 2004

Ecosystem diagnostics for output of untb()

Ecosystem diagnostics

Abundance curves

Construct, coerce, and test for a count object

Preston diagram of an ecosystem

Various functions from Vallade and Houchmandzadeh

Returns an estimate of the fundamental biodiversity number

Barro Colorado Island (BCI) dataset

Etienne's K(D,A)

Biodiversity dataset provided by SAHFOS

Random neutral ecosystem

Posterior probabilities for theta

abundance data for butterflies

Summary methods for count and census objects

Unified neutral theory of biodiversity

Ecological drift simulation under the Unified Neutral Theory of Biodiversity

Extract rows of a database in count form

Copepod data supplied by Phil Pugh

Print and plot objects of class Preston

Animation of neutral ecological drift

Zero sum multinomial distribution as derived by McKane

Construct, coerce, and test for a census object

Add two count objects

Randomly select a subset of an ecosystem