Foraging trip duration and density of megachilid bees, eumenid wasps and pompilid wasps in tropical agroforestry systems

摘要

1. Most animals have to bridge some distances in space and time to provide all resources necessary for survival. Little is known about how the local and regional management of tropical agroforestry systems, differing in the availability of food resources and suitable nesting sites, determine foraging trip duration and density of bees and wasps (Hymenoptera Aculeata).