The calculation of pairwise dissimilarity
In order to compare the pairwise dissimilarity of species composition
between each grazing gradients with control grazing gradient for study
sites, we adopted Bray-Curtis Index method. We also use the same method
to calculate the pairwise dissimilarity of environment conditions
between study sites based on the precipitation and temperature of each
sample sites in dry season and rainy season.
We visualized community turnover of different grazing gradients sites
with Non-Metric Multidimensional Scaling (NMDS) based on a Bray–Curtis
similarity matrix of species abundance data.