Evaluation of the estimate bias magnitude of the Rao's quadratic diversity index
文献类型：期刊论文
| 作者 | Chen, Youhua1; Wu, Yongbin3; Shen, Tsung-Jen2 |
| 刊名 | PEERJ
 |
| 出版日期 | 2019-07-06 |
| 卷号 | 6页码:e5211 |
| ISSN号 | 2167-8359 |
| 关键词 | Biometrics Forest ecology Biodiversity measure Estimation accuracy Phylogenetic ecology Functional traits |
| DOI | 10.7717/peerj.5211 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Rao's quadratic diversity index is one of the most widely applied diversity indices in functional and phylogenetic ecology. The standard way of computing Rao's quadratic diversity index for an ecological assemblage with a group of species with varying abundances is to sum the functional or phylogenetic distances between a pair of species in the assemblage, weighted by their relative abundances. Here, using both theoretically derived and observed empirical datasets, we show that this standard calculation routine in practical applications will statistically underestimate the true value, and the bias magnitude is derived accordingly. The underestimation will become worse when the studied ecological community contains more species or the pairwise species distance is large. For species abundance data measured using the number of individuals, we suggest calculating the unbiased Rao's quadratic diversity index. |
| URL标识 | 查看原文 |
| WOS关键词 | FUNCTIONAL DIVERSITY ; SPECIES ABUNDANCE ; ENTROPY ; EXTRAPOLATION ; RAREFACTION ; FOREST ; NUMBER |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | PEERJ INC |
| WOS记录号 | WOS:000437762400015 |
| 源URL | [http://210.75.237.14/handle/351003/30209]  |
| 专题 | 食品安全与环境治理领域_中国科学院环境与应用微生物重点实验室 生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室 生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室 |
| 作者单位 | 1.CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province,Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China; 2.Institute of Statistics & Department of Applied Mathematics, National Chung Hsing University,Taichung, Taiwan 3.South China Agr Univ, Coll Forestry & Landscape Architecture, Guangzhou, Guangdong, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Chen, Youhua,Wu, Yongbin,Shen, Tsung-Jen. Evaluation of the estimate bias magnitude of the Rao's quadratic diversity index[J]. PEERJ,2019,6:e5211. |
| APA | Chen, Youhua,Wu, Yongbin,&Shen, Tsung-Jen.(2019).Evaluation of the estimate bias magnitude of the Rao's quadratic diversity index.PEERJ,6,e5211. |
| MLA | Chen, Youhua,et al."Evaluation of the estimate bias magnitude of the Rao's quadratic diversity index".PEERJ 6(2019):e5211. |
入库方式： OAI收割
来源：成都生物研究所
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