animaColExt {EcoVirtual}

Colonization and Extinction balance in the Island Biogeography Equilibrium model

Description

Simulate the balance between extinction and colonization rates given the equilibrium number of species in a island, based on the Island Biogeography Equilibrium model.

Usage

animaColExt(min = 0.01, max = 1, cycles = 100, Ext = "crs",
  Col = "dcr")

Arguments

min

between 0-1. The minimum value of the extinction and colonization rates.

max

between 0-1. The maximum value of the extinction and colonization rates.

cycles

number of cycles in the simulation.

Ext

a string representing the extinction rate. This can be 'crs' for an increasing extinction rate, 'fix' for a fixed extinction rate in 0.5, or 'dcr' for a decreasing extinction rate.

Col

a string representing the colonization rate. This can be 'crs' for an increasing colonization rate, 'fix' for a fixed colonization rate in 0.5, or 'dcr' for a decreasing colonization rate.

Details

The number of species is the balance between extinction and colonization rates at the equilibrium.

Value

'animaColExt' returns a graph of the extinction and colonization rates varying one or both rates in relation with the number of species of an island.

Author(s)

Alexandre Adalardo de Oliveira [e-mail]

References

Gotelli, N.J. 2008. A primer of Ecology. 4th ed. Sinauer Associates, 291pp.

See Also

archip bioGeoIsl http://ecovirtual.ib.usp.br

Examples

## Not run: 
animaColExt(Ext='fix', Col="fix")

## End(Not run)