Estimating Species Richness Using the Jackknife Procedure

摘要

An exact expression is given for the jackknife estimate of the number of species in a community and its variance when one uses quadrat sampling procedures. The jackknife estimate is a function of the number of species that occur in one and only one quadrat. The variance of the number of species, and approximate two sided confidence intervals can be constructed. The behavior of the jackknife estimate as effected by quadrat size, sample size, and sampling area is looked at by simulation.