Relative role of neutral dynamics increase in an area encompassing independent biogeographic units
The species-neutral and functional diversities were calculated using theq order two for the model communities at convergence time. The functional diversity was based on the similarity matrix between pairs of species calculated as the overlapping percentage of Gaussian functions (Marcon & Hérault, 2015). Then, the functional uniqueness and redundancy proposed by Ricotta et al. (2016) were used to represent approximately the relative roles of alternative processes. In the model communities resulted with only one guild and more than two guilds, these measures were compared across ecological-evolutionary scales in each environmental structure.