untb.package: Unified neutral theory of biodiversity

Description Details Author(s) References Examples

Description

Numerical simulations, and visualizations, of the unified neutral theory of biodiversity

Details

Package: untb
Type: Package
Version: 1.0
Date: 2005-10-26
License: GPL

Package untb uses two classes of object to represent an ecosystem: class count and class census. In essense, a count object is a table of species abundances and a census object is a list of individuals. See ?census and ?count for more details. Although objects of either class can be coerced to the other, class count is the preferred form: it is a more compact representation, especially for large ecosystems.

The package simulates neutral ecological drift using function untb(). Function display.untb() displays a semi-animated graphic of an ecosystem undergoing neutral drift.

Author(s)

Robin K. S. Hankin

Maintainer: <[email protected]>

References

Examples

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a <- untb(start=rep(1,100),prob=0.005,gens=5000,keep=FALSE)
preston(a)
no.of.spp(a)

display.untb(start=rep(1,100),prob=0.1,gens=1000)

data(butterflies)
plot(butterflies,uncertainty=TRUE)

untb documentation built on March 19, 2018, 9:03 a.m.