abund.ch.prob {CTFS}R Documentation

Calculation of Probability of Change in Population size

Description

The probability that N0 = N1 is computed.

Usage

abund.ch.prob(N0, N1, recrate, survrate)

Arguments

N0 abundance in first census
N1 abundance in second census
recrate number of recruits / N1
survrate number of survivors / N0

Details

See CTFS.abundance for details on the computation of abundance and associated functions.

This function is designed to be called from abundance.change.calculation. It can be used independently if the number of recruits and survivors are known. The probability returned is the sum of a biniomial (survivorship) and poisson (recruitment) distribution. The arguments can be vectors of any length. This function does not work with multi-dimensional arrays. To use if for these, use abundance.change.calculation

Value

prob vector of probabilities of same length as the arguments

Author(s)

Rick Condit

See Also

CTFS.abundance, abundance.change, abundance.change.calculation


[Package CTFS version 1.00 Index]