Figure 1.

Daily average leaf litter consumption by dispersing and non-dispersing (resident) amphipods of G. fossarum (n = 73 mesocosms) and D. villosus (n = 53), adjusted for biomass of the individuals in each experimental replicate. Error bars show standard error of the mean, and grey dots show raw data points from experimental mesocosms; lines connect observations from resident and disperser populations from the same experimental patch pair of the original dispersal experiment. Asterisk shows a significant difference (p < 0.05) between consumption rates of dispersers and residents according to a linear mixed-effect model. (Online version in colour.)