Trait‐based effects of plant invasion on floral resources, hoverflies and bees

Plant invasions can lead to homogeneous communities with decreased functional diversity. However, invasive plants, various morphological and phenological traits, may drive pollinator in a less predictable, more complex way. They promote pollinators compatible their floral while leaving others without foraging resources. Our observational study on 10 herbaceous species applied trait-based approach investigate plant invasion-driven changes resources, hoverfly bee communities. We sampled invaded non-invaded (control) sites before during the flowering of plants. analysed differences traits between native diversity trait distributions flower control sites. Five differed from natives traits. invasion caused species-specific For instance, had hoverflies species, larger compared Smaller bees were associated plants shallow flowers, long-tongued two restricted access. Similar previous studies, showed mixed or neutral responses invasion. This is probably due high integration capability into plant-pollinator systems, limitations sampling, resolution, unrevealed environmental factors. provide recommendations for future studies better understand community composition pollinators.