Irr                     Index of Relative Rarity
Isr                     Index of Summed Rarity
Rarity-package          A package to calculate rarity indices for
                        species and assemblages of species for
                        conservation studies
corPlot                 Correlation plots
rWeights                Calculation of rarity weights at a single or at
                        multiple scales
spid.occ                Occurrences of spiders of Western France at two
                        different scales.
