Introduction: Frugivory, Phenology, and Rainforest Conservation -- Do Frugivore Population Fluctuations Reflect Fruit Production? Evidence from Panama -- Potential Keystone Plant Species for the Frugivore Community at Tinigua Park, Colombia -- Floristics, Primary Productivity and Primate Diversity in Amazonia: Contrasting a Eutrophic Várzea Forest and an Oligotrophic Caatinga Forest in Brazil …