# untb v1.6-8

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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. Now includes functionality
provided by Francois Munoz and Andrea Manica.

## Functions in untb

Name | Description | |

alonso | Various functions from Alonso and McKane 2004 | |

copepod | Copepod data supplied by Phil Pugh | |

caruso | Dataset due to Caruso | |

count | Construct, coerce, and test for a count object | |

expected.abundance | Expected abundances under the neutral model | |

isolate | Randomly select a subset of an ecosystem | |

fisher | Various functionality to implement Fisher's logseries | |

optimal.params.gst | Estimation of local immigration using GST(k) statistics | |

preston | Preston diagram of an ecosystem | |

no.of.ind | Ecosystem diagnostics | |

census | Construct, coerce, and test for a census object | |

phi | Hubbell's phi | |

sahfos | Biodiversity dataset provided by SAHFOS | |

print.summary.count | Print method for summary objects | |

plot.count | Abundance curves | |

print.preston | Print and plot objects of class Preston | |

butterflies | abundance data for butterflies | |

rand.neutral | Random neutral ecosystem | |

theta.prob | Posterior probabilities for theta | |

ghats | Tree counts in 1-ha plots from the Western Ghats mountains (South India) | |

logS1 | logarithms of Stirling numbers of the first kind | |

bci | Barro Colorado Island (BCI) dataset | |

etienne | Etienne's sampling formula | |

vallade | Various functions from Vallade and Houchmandzadeh | |

logkda | Etienne's K(D,A) | |

extractor | Extract rows of a database in count form | |

optimal.params.sloss | Estimation of neutral community parameters using a two-stage maximum-likelihood procedure | |

optimal.prob | Returns an estimate of the fundamental biodiversity number | |

display.untb | Animation of neutral ecological drift | |

+.count | Add two count objects | |

species.count | Ecosystem diagnostics for output of untb() | |

saunders | Dataset due to Saunders | |

untb | Ecological drift simulation under the Unified Neutral Theory of Biodiversity | |

summary.count | Summary methods for count and census objects | |

untb-package | Unified neutral theory of biodiversity | |

volkov | Expected frequency of species | |

simpson | Simpson's diversity index | |

zsm | Zero sum multinomial distribution as derived by McKane | |

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## Last month downloads

## Details

Type | Package |

Date | 2009-26-02 |

SystemRequirements | PARI/GP >= 2.3.0 [strongly recommended for logkda()] |

License | GPL |

URL | http://www.r-project.org |

Packaged | 2011-08-05 01:31:28 UTC; rksh |

Repository | CRAN |

Date/Publication | 2011-08-11 07:01:48 |

depends | base (>= 2.10) , Brobdingnag (>= 1.1.8) , partitions , polynom , R (>= 2.10) |

Contributors | Robin S. Hankin |

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