|
Functional diversity index
|
Number of studies*
|
Description
|
References
|
| Functional Richness (FRic) |
64 |
Volume of the functional space occupied by the community |
Mason et al. (2005),
Villéger et al. (2008)
|
| Functional Evenness (FEve) |
46 |
Sum of the minimum spanning tree branch length weighted by relative abundance of the two species |
Mason et al. (2005),
Villéger et al. (2008)
|
| Functional Divergence (FDiv) |
34 |
Species deviance from the mean distance to the center of gravity weighted by relative abundance |
Mason et al. (2005),
Villéger et al. (2008)
|
| Functional Dispersion (FDis) |
34 |
Mean distance in functional space of individual species to the centroid of all species |
Laliberté, Legendre (2010)
|
| Rao (Q) |
19 |
Sum of species distance weighed by abundance |
Botta-Dukát (2005),
Ricotta, Moretti (2011)
|
| Functional Originality (FOri) |
10 |
Mean distance between each species and its nearest neighbour in the functional space |
Mouillot et al. (2013)
|
| Functional Specialization (FSpe) |
8 |
Mean Euclidean distance between each species and the average position of all species in the functional space |
Mouillot et al. (2013)
|
| Functional Redundancy (FRed) |
8 |
Difference between species diversity (Gini-Simpson diversity index) and Rao; average number of species or as mean abundance or biomass per functional group |
de Bello et al. (2007),
Laliberté et al. (2010)
|
| Functional Diversity (FD) |
3 |
Sum of the largest branch of the functional dendrogram |
Petchey, Gaston (2002)
|
| Functional Uniqueness (FUni) |
3 |
Ratio between Rao index and the Simpson diversity index, relating functional diversity to the maximum dissimilarity value of the community |
Ricotta et al. 2016
|
| Functional Identity |
2 |
Expressed as the biomass-weighted mean trait value for a community |
Mouillot et al. (2011)
|
| Functional Vulnerability |
2 |
Sum of the total number of functional entities and the number of species in functional entity |
Mouillot et al. (2014)
|
| Mean Pairwise Distance (MPD) |
2 |
The average of the distances between pairs of species in the focal community |
Webb (2000)
|
| Mean Nearest Taxon Distance (MNTD) |
1 |
The average of distances between the species of focal community with the respective functionally most similar species (“neighbor closer”) |
Webb (2000)
|
| Functional Regularity Index (FRO) |
1 |
Species evenness in functional space weighted by species abundances |
Mouillot et al. (2005)
|
| Functional Distinctiveness |
1 |
Functional dissimilarity of one species in relation to the other species of the community, representing functional redundancy |
Grenié et al. (2017)
|
Functional diversity: a review on freshwater fish research
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