Connectance of brazilian social bee - food plant networks is influenced by habitat, but not by latitude, altitude or network size - Biesmeijer, Jacobus C.; Slaa, E. Judith; Castro, Marina Siqueira de; Viana, Blandina Felipe; Kleinert, Astrid de Matos Peixoto; Imperatriz-Fonseca, Vera Lucia (Biota Neotropica, 2005)