Functional dispersion (FDis)
FDis measures the weighted mean distance of individual species to their weighted centroid, where weights are their relative abundances
Author
Laliberte E. and Legendre P.
Published in
Ecology, 91(1), 2010, pp 299-305
Range
From 0 to 1 (with standardized trait prior to compute)
Weaknesses
Do not satisfy monotonicity criterions ((i.e., a subset of a community should be no more diverse than the whole community)
Strengths
Little influenced by species richness, can be compute for any distance or dissimilarity measure, can handle any number of types of traits (quantitative and semi-quantitative) and missing trait values, is not strongly influenced by outliers, takes into account species relative abundances
Main characteristics
Multivariate analogue of weighted mean absolute deviation
R Package
//cran.r-project.org/web/packages/FD/
R Package description
//cran.r-project.org/web/packages/FD/FD.pdf
Studies that used this index
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