Generalized least-squares models predicting the relationship between FDis values and the environmental variables of ponds. DEPTH, maximum depth of ponds; NVI, number of vegetation types in the interior of ponds; AICc, Akaike information criterion, corrected for the small sample size; Δ AICc, difference in Akaike's information criterion; ω, Akaike weights to evaluate model selection uncertainty; NULL, model without predictor variable (considering only intercept). Significant results (p≤0.05) are italicized.