| Functional diversity (FD) |
The functional space occupied by species, where axes are functional features (Rosenfeld, 2002; Villéger, Mason & Mouillot, 2008). The functional differences between a group of species (Tilman, 2001) |
| Functional richness (FRic) |
The breadth of functional space filled by a communities (Villéger, Mason & Mouillot, 2008) |
| Functional evenness (FEve) |
The evenness of the distribution of abundances and functional features of species (Villéger, Mason & Mouillot, 2008) |
| Functional divergence (FDiv) |
The average distance of species abundances from the centre of functional space (Mouchet et al., 2010) |
| Rao’s quadratic entropy (Q) |
The average functional distance between two randomly selected species in a group (Mouchet et al., 2010). |
