Journal ArticleDOI
Measuring diversity from dissimilarities with Rao's quadratic entropy: are any dissimilarities suitable?
TLDR
It is demonstrated that the elimination of categories is retained when quadratic entropy is applied to ultrametric dissimilarities, and all categories are retained in order to reach its maximal value.About:
This article is published in Theoretical Population Biology.The article was published on 2005-06-01. It has received 131 citations till now. The article focuses on the topics: Entropy (information theory) & Ultrametric space.read more
Citations
More filters
Journal ArticleDOI
Phylocom: software for the analysis of phylogenetic community structure and trait evolution.
TL;DR: Phylocom calculates numerous metrics of phylogenetic community structure and trait similarity within communities and measures phylogenetic signal and correlated evolution for species traits.
Journal ArticleDOI
A guide to phylogenetic metrics for conservation, community ecology and macroecology.
Caroline M. Tucker,Marc W. Cadotte,Marc W. Cadotte,Sílvia B. Carvalho,T. Jonathan Davies,T. Jonathan Davies,Simon Ferrier,Susanne A. Fritz,Rich Grenyer,Matthew R. Helmus,Matthew R. Helmus,Lanna S. Jin,Arne Ø. Mooers,Sandrine Pavoine,Oliver Purschke,David W. Redding,Dan F. Rosauer,Marten Winter,Florent Mazel +18 more
TL;DR: Existing metrics in phylogenetic diversity metrics are organized by expanding on a unifying framework for phylogenetic information to improve the choice, application, and interpretation of phylo‐diversity metrics.
Journal ArticleDOI
On the challenge of treating various types of variables: application for improving the measurement of functional diversity
TL;DR: It is proved Gower's distance can be extended to include new types of data and an evaluation of the real contribution of each variable to the mixed distance is proposed, concluding that such a generalized index will be crucial for analyzing functional diversity at small and large scales.
Journal ArticleDOI
Measuring diversity: the importance of species similarity
TL;DR: A system of diversity measurement is arrived at that should lay much of this suspicion about diversity indices to rest, by dropping the naive assumption that distinct species have nothing in common, working with effective numbers, and using diversity profiles.
Journal ArticleDOI
CWM and Rao's quadratic diversity: a unified framework for functional ecology
Carlo Ricotta,Marco Moretti +1 more
TL;DR: Analyzing changes in functional diversity of bee communities along a post-fire successional gradient in southern Switzerland shows that the Rao coefficient and CWM may be used to describe two complementary aspects of community structure, such as the mean and the dispersion of functional traits within a given species assemblage.
References
More filters
Journal ArticleDOI
Estimation of average heterozygosity and genetic distance from a small number of individuals
TL;DR: It is shown that the number of individuals to be used for estimating average heterozygosity can be very small if a large number of loci are studied and the average heter homozygosity is low.
Book
Ecological Diversity and its Measurement
TL;DR: In this paper, the authors define definitions of diversity and apply them to the problem of measuring species diversity, choosing an index and interpreting diversity measures, and applying them to structural and structural diversity.
Journal ArticleDOI
Mathematical model for studying genetic variation in terms of restriction endonucleases
Masatoshi Nei,Wen-Hsiung Li +1 more
TL;DR: A mathematical model for the evolutionary change of restriction sites in mitochondrial DNA is developed and a measure called "nucleotide diversity" is proposed to express the degree of polymorphism in a population at the nucleotide level.
Journal ArticleDOI
R: A Language for Data Analysis and Graphics
Ross Ihaka,Robert Gentleman +1 more
TL;DR: In this article, the authors discuss their experience designing and implementing a statistical computing language, which combines what they felt were useful features from two existing computer languages, and they feel that the new language provides advantages in the areas of portability, computational efficiency, memory management, and scope.
Journal ArticleDOI
Genetic distance between populations
TL;DR: If enough data are available, genetic distance between any pair of organisms can be measured in terms of D, and this measure is applicable to any kind of organism without regard to ploidy or mating scheme.