This User's Guide shares findings from SERDP project “The Impact of Non-Native Predators on Pollinators and Native Plant Reproduction in a Hawaiian Dryland Ecosystem." The guide provides information to land and natural resource managers on: i) pollination of native plants by native and non-native insects, ii) interactions among nonnative invasive predators and insect pollination of native plants, and iii) methods and experimental designs for measuring plant-pollinator interactions and predator suppression.