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Explicit Calculation of the Rarefaction Diversity Measurement and the Determination of Sufficient Sample Size

Kenneth L. Heck, Jr., Gerald van Belle and Daniel Simberloff
Ecology
Vol. 56, No. 6 (Autumn, 1975), pp. 1459-1461
Published by: Wiley
DOI: 10.2307/1934716
Stable URL: http://www.jstor.org/stable/1934716
Page Count: 3
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Explicit Calculation of the Rarefaction Diversity Measurement and the Determination of Sufficient Sample Size
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Abstract

An explicit means of calculating the expected number of species [E(S"n)] and the variance of (S"n) in a random sample of n individuals from a collection containing N individuals and S species is presented. An example illustrates a new use of E(S"n): determination of the sample size required for any desired degree of accuracy in collecting species known to occur in a particular area.

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