TABLE 4 in The Megachilidae (Hymenoptera, Apoidea, Apiformes) of the Democratic Republic of Congo curated at the Royal Museum for Central Africa (RMCA, Belgium)

TABLE 4. Wild bee community differentiation based on 6,490 specimens relevant to 196 wild bee species grouped in 18 genera and seven phylogenetic groups within the family Megachilidae curated at RMCA (Tervuren, Belgium) and collected between 1905 and 1978. Community changes were assessed through beta diversity analyses and their partitioning among three categories of administrative or natural units: (i) the six historical provinces in DRC, (ii) the 26 present-day provinces, and (iii) the 10 known phytogeographical districts defined within the country. The metric βsør represents a measure of total dissimilarity, and its partitioning into its two major components: (1) species replacement among sampling units, i.e., turnover: βsim; and (2) species loss/gain, i.e., nestedness: βsne; following the formula βsør = βsim + βsne (Baselga 2010, Legendre 2014).
βsørβsimβsneTaxonomicPhylogeneticTaxonomicPhylogeneticTaxonomicPhylogeneticHistorical provinces (up to 1960)0.72 ± 0.00.55 ± 0.70.21 ± 0.00.07 ± 0.00.50 ± 0.00.47 ± 0.6Present-day provinces0.94 ± 6.90.74 ± 4987.80.52 ± 3.80.32 ± 2180.00.41 ± 3.00.41 ± 2807.7Phytogeographical districts0.80 ± 0.00.64 ± 15.00.23 ± 0.00.06 ± 1.60.57 ± 0.00.57 ± 13.4