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  BiometricsVolume 62 Issue 1, Pages 135 - 141 Published Online: 23 Jun 2005 ©2009 International Biometric Society Journal of the International Biometric Society
Abstract | References | Full Text: HTML, PDF (Size: 278K) | Related Articles | Citation Tracking  An Estimator of Number of Species from Quadrat Sampling Copyright 2005, The International Biometric Society KEYWORDS Block sampling • Cluster sampling • Distinct values • Jackknife estimator • Nonparametric estimator • Number of classes ABSTRACTSummary . We consider the problem of estimating the number of distinct species S in a study area from the recorded presence or absence of species in each of a sample of quadrats. A generalized jackknife estimator of S is derived, along with an estimate of its variance. It is compared with the jackknife estimator for S proposed by Heltshe and Forrester (1983, Biometrics39, 1–12) and the empirical Bayes estimator of Mingoti and Meeden (1992, Biometrics48, 863–875). We show that the empirical Bayes estimator has the form of a generalized jackknife estimator under a specific model for species distribution. We compare the new estimators of S to the empirical Bayes estimator via simulation. We characterize circumstances under which each is superior. Received July 2003. Revised February 2005. Accepted March 2005. | 
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 | Biometrics |
| Biometrics increased its * Thomson Reuters Journal Citation Report 2008 | |
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2009 Harold W. Kuhn Award |
Congratulations to Gerald G. Brown and W. Matthew Carlyle, recipients of the 2009 Harold W. Kuhn Award for their exceptional paper published in Naval Research Logistics "
Optimizing the US Navy's combat logistics force
" Read the full article FREE online PDF [320k] | |
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Teaching Statistics |
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