untb v1.3-3
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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 | |
| optimal.prob | Returns an estimate of the fundamental biodiversity number | |
| phi | Hubbell's phi | |
| logS1 | logarithms of Stirling numbers of the first kind | |
| etienne | Etienne's sampling formula | |
| rand.neutral | Random neutral ecosystem | |
| volkov | Expected frequency of species | |
| sahfos | Biodiversity dataset provided by SAHFOS | |
| simpson | Simpson's diversity index | |
| extractor | Extract rows of a database in count form | |
| species.count | Ecosystem diagnostics for output of untb() | |
| census | Construct, coerce, and test for a census object | |
| print.summary.count | Print method for summary objects | |
| logkda | Etienne's K(D,A) | |
| fisher | Various functionality to implement Fisher's logseries | |
| expected.abundance | Expected abundances under the neutral model | |
| print.preston | Print and plot objects of class Preston | |
| summary.count | Summary methods for count and census objects | |
| vallade | Various functions from Vallade and Houchmandzadeh | |
| untb | Ecological drift simulation under the Unified Neutral Theory of Biodiversity | |
| untb-package | Unified neutral theory of biodiversity | |
| preston | Preston diagram of an ecosystem | |
| zsm | Zero sum multinomial distribution as derived by McKane | |
| alonso | Various functions from Alonso and McKane 2004 | |
| no.of.ind | Ecosystem diagnostics | |
| saunders | Dataset due to Saunders | |
| copepod | Copepod data supplied by Phil Pugh | |
| isolate | Randomly select a subset of an ecosystem | |
| +.count | Add two count objects | |
| plot.count | Abundance curves | |
| butterflies | abundance data for butterflies | |
| bci | Barro Colorado Island (BCI) dataset | |
| count | Construct, coerce, and test for a count object | |
| theta.prob | Posterior probabilities for theta | |
| display.untb | Animation of neutral ecological drift | |
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Details
| 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 | Fri Jan 16 18:05:16 2009; rksh |
| depends | Brobdingnag , partitions |
| Contributors | Robin S. Hankin |
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