Timing and phenology shifts in interacting plant - herbivore - predator systems (C03)

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The aim of this ecological timing project is to reveal effects of day-night rhythms, phenology (seasonal timing) and phenology shifts on the fitness of interacting species along trophic cascades. We will study (i) the effects of day length at different latitudes on trophic cascades in climate chamber, glasshouse and field experiments, (ii) day-night rhythmicity and (iii) fitness effects of day length on aphids and their predators, (iv) morphological and physiological responses of aphids after transition of wingless to winged morphs and (v) the importance of photoperiod and temperature on hibernation and emergence phenology of herbivores and their natural enemies.