Abstract
AbstractThe beta‐binomial distribution is used to provide estimates of the probability of detecting a rare species, the smallest proportion cover detectable with a stated confidence for a survey, and is a method for estimating the sample size required to detect a species with a stated presence at a stated level of confidence for independent clusters of binary data. The equations, while general, were derived in the context of marine benthic video transects and are useful for evaluating a wide range of existing surveys or designing new surveys. Application of the equations is demonstrated for a data set collected from three marine surveys on the Great Barrier Reef in Australia. Copyright © 2006 John Wiley & Sons, Ltd.
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