BCI.env.coarse          Barro Colorado Island 50 Hectare Quadrat
                        Environmental Dataset at Coarse Scale
BCI.env.fine            Barro Colorado Island 50 Hectare Quadrat
                        Environmental Dataset at Fine Scale
BCI.spec.coarse         Barro Colorado Island 50 Hectare Quadrat
                        Species Presence-Absence Dataset at Coarse
                        Scale
BCI.spec.fine           Barro Colorado Island 50 Hectare Quadrat
                        Species Presence-Absence Dataset at Fine Scale
Marion.env              Marion Island Environmental Dataset
Marion.species          Marion Island Species Presence-Absence Dataset
Zeta.ddecay             Zeta distance decay for a specific number of
                        assemblages or sites
Zeta.ddecays            Zeta distance decay for a range of numbers of
                        assemblages or sites
Zeta.decline            Zeta diversity decline
Zeta.gam                Generalized additive model of zeta for a set of
                        environmental variables and distance
Zeta.lm                 Linear regression of zeta for a set of
                        environmental variables and distance
Zeta.order              Zeta diversity for a specific number of
                        assemblages or sites
Zeta.sam.sensitivity    Sensitivity analysis for the sample size of
                        zeta
Zeta.scale.min.dist     Zeta diversity scaling with sample grain
                        dependency based on minimum distance
Zeta.scale.regular      Zeta diversity scaling with sample grain using
                        hierarchically increases in grain size
Zeta.varpart            Variation partitioning for zeta diversity
pie.neg                 Pie Chart, considering negative values as zeros
