PERMANOVA using the F2 Statistic
Implements the F2 statistic of Anderson et al. (2017)
for permutational multivariate analysis of
variance (PERMANOVA) on dissimilarity matrices. The F2 statistic uses
group-specific dispersion estimates, so group centroids can be compared
when dispersions differ and group sizes are unequal. P-values are
obtained by permutation, bootstrap, or bias-adjusted
bootstrap. The formula interface follows 'adonis2()' in the 'vegan'
package.