I need to make a triangular graph, I calculated the different parameters of the beta diverity using the beta.div.comp function of the adespatial package, but I do not know how to do the following graph.
Consistent variability in beta-diversity patterns contrasts
with changes in alpha-diversity along an onshore to offshore
environmental gradient: the case of Red Sea soft-bottom
macrobenthos
Alsaffar et al., 2017