Fig. 4
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Changes in total phosphorus (TP) – a, total nitrogen (TN) – b, and total organic carbon (TOC) – c, in tanks during the experiment following the addition of the groundbait mixtures Rch3 (roach), Bm3 (bream), and Cp4 (carp). C: control group (no groundbait). Bars marked with different lowercase letters (within the same time point) differ significantly at p < 0.05.
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