| a chemical polymorphism in a multitrophic setting: thyme monoterpene composition and food web structure. | we investigated the effects of chemical variation in thyme (thymus vulgaris l.) on its interactions with competitors, herbivores, and herbivore predators. four different thyme monoterpene phenotypes (chemotypes) were grown in a 4x2x2 factorial of chemotype, caging (sham half-cages vs. full cages), and competition (control vs. the grass bromus madritensis l.). cages reduced numbers of arthropod predators. thyme-feeding aphids aphis serpylli koch passed through full cage walls to increase more tha ... | 2005 | 16224707 |