# untb v1.6-1

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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 | |

bci | Barro Colorado Island (BCI) dataset | |

butterflies | abundance data for butterflies | |

isolate | Randomly select a subset of an ecosystem | |

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

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

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

+.count | Add two count objects | |

preston | Preston diagram of an ecosystem | |

phi | Hubbell's phi | |

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

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

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

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

no.of.ind | Ecosystem diagnostics | |

saunders | Dataset due to Saunders | |

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

simpson | Simpson's diversity index | |

caruso | Dataset due to Caruso | |

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

plot.count | Abundance curves | |

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

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

untb-package | Unified neutral theory of biodiversity | |

vallade | Various functions from Vallade and Houchmandzadeh | |

copepod | Copepod data supplied by Phil Pugh | |

sahfos | Biodiversity dataset provided by SAHFOS | |

volkov | Expected frequency of species | |

display.untb | Animation of neutral ecological drift | |

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

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

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

theta.prob | Posterior probabilities for theta | |

alonso | Various functions from Alonso and McKane 2004 | |

etienne | Etienne's sampling formula | |

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

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

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

rand.neutral | Random neutral ecosystem | |

No Results! |

## 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 | 2009-10-11 19:25:49 UTC; rksh |

Repository | CRAN |

Date/Publication | 2009-10-15 11:09:11 |

depends | Brobdingnag , partitions |

Contributors | Robin S. Hankin |

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