Do differences in sensitivity between native and invasive amphipods explain their coexistence in Lake Constance? A case study with lambda-cyhalothrin

► The invasive aquatic amphipod is more tolerant to lambda-cyhalothrin than the native one. ► Predation success on Baetis nymphs is substantially higher for Dikerogammarus villosus than Gammarus roeselii. ► D. villosus may contribute substantially to leaf litter decomposition.