Conceptual framework of the proposed RU on the ecology and evolution of intraspecific plant chemodiversity. We will study chemical variation in different plant parts (flowers, nectar, pollen, leaves, phloem sap; roots will be included in a potential second funding period), among plant individuals within populations and among populations (left) as well as consequences on the plant-associated community (right) over space and time. The projects will focus on the tree Populus nigra and the herbs Solanum dulcamara and Tanacetum vulgare (lower panel, from left to right).