EcoVirtual (version 1.1)

animaColExt: 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.

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.

Details

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

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 {
# }
# NOT RUN {
animaColExt(Ext='fix', Col="fix")
# }
# NOT RUN {
# }