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Table 1

Probability of a different abundance between control and dry channels (α1, α2 and α3), the 3 periods (γ1 vs. γ2 and γ2 vs. γ3) and the upstream channel sections without fish and the downstream sections with fish (δ). The parameter influence on invertebrate abundance is symbolised by “▲” when the abundance increased significantly (significance probability ≥ 0.90; in bold), “=” when it did not affect the abundance (0.10 < significance probability < 0.90) or “▼” when the abundance decreased significantly (significance probability ≤ 0.10; in bold).

Control vs. Dry channels Periods Fish
Before drying After drying After fish growth Before vs. after drying After drying vs. after fish growth
α1 α2 α3 γ1 vs. γ2 γ2 vs. γ3 δ
Diptera = 0.33 =0.68 = 0.76 0.01 = 0.43 0.01
Coleoptera = 0.35 =0.34 = 0.74 = 0.55 0.99 0.01
Oligochaeta = 0.35 =0.88 0.97 = 0.60 0.91 = 0.38
Others = 0.45 =0.54 = 0.78 0.02 = 0.76 0.01
Total = 0.35 =0.68 = 0.85 0.02 = 0.80 0.01

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