摘要: The Bray-Curtis (BC) similarity index is misidentified in various software programs, and the used by these programs more appropriately credited to Czekanowski (Cz). BC Cz indices differ because abundant species have greatest impact on index, while all (and samples) 'count same' due a double standardization of dataset. To illustrate difference between indices, I analyzed example dataset PRIMER manual. In one instance, values 40% (21 vs. 61%). These discrepancies must be considered comparisons analyses conducted with that use true but mislabel it as 'BC'.
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sci-hub.st 参考文章(6)
K Robert Clarke, Ray N Gorley, PJ Somerfield, Richard M Warwick, Change in marine communities : an approach to statistical analysis and interpretation Published in <b>2001</b> - <b>1994</b> in Plymouth by Plymouth marine laboratory. ,(2001)
David W. Goodall, Sample Similarity and Species Correlation Ordination of Plant Communities. pp. 99- 149 ,(1978) , 10.1007/978-94-009-7989-5_5
Greg Miller, A Scientist's Nightmare: Software Problem Leads to Five Retractions Science. ,vol. 314, pp. 1856- 1857 ,(2006) , 10.1126/SCIENCE.314.5807.1856
SA Bloom, Similarity Indices in Community Studies: Potential Pitfalls Marine Ecology Progress Series. ,vol. 5, pp. 125- 128 ,(1981) , 10.3354/MEPS005125
R. H. WHITTAKER, GRADIENT ANALYSIS OF VEGETATION Biological Reviews. ,vol. 42, pp. 207- 264 ,(1967) , 10.1111/J.1469-185X.1967.TB01419.X
J. Roger Bray, J. T. Curtis, An Ordination of the Upland Forest Communities of Southern Wisconsin Ecological Monographs. ,vol. 27, pp. 325- 349 ,(1957) , 10.2307/1942268