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Average dry mass of a Zooplankton, b Chironomids, and c Total macro invertebrates over time in humic and ambient enclosures. d Average total prey biomass (dry weight per wet weight of fish) in stickleback stomachs and e body condition of sticklebacks over time in ambient and humic enclosures. Open circles are ambient treatment, closed circles are humic treatment, error bars denote ±1 SE
