Land use influences the nutrient concentration and composition of pollen and nectar rewards of wildflowers in human-dominated landscapes

• DOI: 10.1016/j.scitotenv.2023.168130
• Publication Date: 2023-10-29T23:05:19Z
• Authors: Emiliano Pioltelli; Lorenzo Guzzetti; Malika Ouled Larbi; Rita Celano; Anna Lisa Piccinelli; Andrea Galimberti; Paolo Biella; Massimo Labra
• Keywords: Lotus corniculatus

Plant biodiversity is crucial to satisfy the trophic needs of pollinators, mainly through nectar and pollen rewards. However, a few studies have been directed ascertain intraspecific variation chemical features nutritional value floral rewards in relation alteration landscapes due human activities. In this study, by using an existing scenario land use gradients as open air laboratory, we tested nutrient profiles along urbanization agriculture intensity, focusing on sugar, aminoacids phytochemicals from local wild plants. We also highlighted bioactive compounds plants primary secondary metabolism their importance for insect wellbeing pollinator health. surveyed 7 different meadow species foraged pollinators common main uses studied. The results indicated that significant variations components occur uses, specifically agricultural intensification decreases sugars increases antioxidant content flower rewards, while positively associated with total flavonoid pollen. These effects are more evident some than others, such Lotus corniculatus L. (Fabaceae) Malva sylvestris (Malvaceae), shown untargeted metabolomic investigation. This study understanding landscape quality association sets base management planning pollinator-friendly strategies improving plant provide benefits health various environmental contexts.