vstrat: Estimated Variance of Stratified Abundance Estimator
Description
Calculates the estimated variance of the stratified estimator
for abundance in a mark-recapture experiment, from vectors of sample sizes
and number of recaptures, with each element corresponding to each sampling
stratum.
Usage
vstrat(n1, n2, m2, estimator = "Chapman")
Arguments
n1
Vector of individuals captured and marked in the first sample, from
each stratum
n2
Vector of individuals captured and marked in the second sample,
from each stratum
m2
Vector of marked individuals recaptured in the second sample, from
each stratum
estimator
The type of estimator to use. Allowed values are
"Chapman", "Petersen", and "Bailey". Default to
"Chapman".
Value
The estimated variance of the stratified estimator