DOI: 10.1111/ele.12385
Scopus记录号: 2-s2.0-84934094954
论文题名: Measures of precision for dissimilarity-based multivariate analysis of ecological communities
作者: Anderson M.J. ; Santana-Garcon J.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2015
卷: 18, 期: 1 起始页码: 66
结束页码: 73
语种: 英语
英文关键词: Assemblage data
; Community ecology
; Dissimilarities
; Multivariate analysis
; permanova
; Precision
; Replicates
; Sampling design
; Standard error
; Variability
Scopus关键词: biota
; ecology
; methodology
; multivariate analysis
; procedures
; theoretical model
; Biota
; Ecology
; Models, Theoretical
; Multivariate Analysis
; Research Design
英文摘要: Ecological studies require key decisions regarding the appropriate size and number of sampling units. No methods currently exist to measure precision for multivariate assemblage data when dissimilarity-based analyses are intended to follow. Here, we propose a pseudo multivariate dissimilarity-based standard error (MultSE) as a useful quantity for assessing sample-size adequacy in studies of ecological communities. Based on sums of squared dissimilarities, MultSE measures variability in the position of the centroid in the space of a chosen dissimilarity measure under repeated sampling for a given sample size. We describe a novel double resampling method to quantify uncertainty in MultSE values with increasing sample size. For more complex designs, values of MultSE can be calculated from the pseudo residual mean square of a permanova model, with the double resampling done within appropriate cells in the design. R code functions for implementing these techniques, along with ecological examples, are provided. © 2014 The Authors. Ecology Letters published by John Wiley & Sons Ltd and CNRS. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107939
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: New Zealand Institute for Advanced Study (NZIAS), Massey University, Albany Campus, Private Bag 102 904, Auckland, New Zealand; The UWA Oceans Institute (M470) and School of Plant Biology, The University of Western Australia, Perth, Australia
Recommended Citation:
Anderson M.J.,Santana-Garcon J.. Measures of precision for dissimilarity-based multivariate analysis of ecological communities[J]. Ecology Letters,2015-01-01,18(1)