Abstract
A removal sampling technique was used and evaluated according to its assumptions for estimating the absolute densities of adult ground beetles (Carabidae). Removal sampling is a method of absolute density estimation based on the decline in successive catch numbers as individuals are removed from a population. Field arenas were used to isolate sampling areas in a no-till corn field, and pitfall traps were installed within the arenas to remove the carabids. A linear regression method was used to calculate the density estimate using the removal sampling data. Although the technique provided estimates which are relatively similar to those of mark-release-recapture studies, violations of the assumptions were observed, and suggestions are made which may improve the accuracy of the estimates and the applicability of the technique.
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