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(A) The experimental set up, a split-plot design with fish introduced into 3 of the 6 cages, and three treatments in each cage near the surface (S) and the same three treatments at 1.5 m depth (B), plus a Nymphaeaceae plant transplanted into each cage. Treatments were assigned positions at random for each cage. The three treatments were: lake sediment, woody detritus, and transplanted Charophyte plants. The experiment was run twice with different fish stocking densities. (B) A side on view of one cage to show the differing depths. (C) A photograph of the cages in situ, February 2020.
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