Trophic interactions between plants, pollinators, florivores and predators: a global systematic review

Abstract The multitrophic relationships between plants, pollinators, florivores and spiders that predate floral visitors influence plant reproductive success, and some plant characteristics influence the choices of these animals. The aim of this study was to integrate the global data on these multitrophic relationships and answer the following questions. How are the studies distributed by biomes? What are the groups of plants, pollinators, florivores, spiders and prey recorded? What plant features explain the presence of florivores and spiders? What is the effect of spiders on fruit set? A systematic literature review was carried out to extract the necessary information. The most frequently observed families of plants, pollinators, florivores, spiders and prey were, respectively, herbaceous Asteraceae, Apidae (bees), Chrysomelidae (beetles), Thomisidae (spiders) and Bombyliidae (flies). The choice of flowers by florivores was explained by floral longevity. The choice of flowers by spiders was explained by life-form, symmetry, shape, pollination unit (more frequent in isolated flowers than in inflorescences) and resource (nectar). Spiders had a neutral general effect on fruit set, indicating that the study scale influenced the result. An important knowledge gap concerns the influence of florivores on fruit set. Studies that follow standardized methodologies are necessary.