a negative trendgold
“Bed Characteristics + Year” was best supported for Δ % Generalists (ΔAICc = 0.00), displaying a negative trend with D 50 . Δ % Herbivores was best modeled by “Year-only” (ΔAICc = 0.00), although the “Hydrologic Variability + Year” model was also supported (ΔAICc = 0.80). Δ % Tolerant was best modeled by the “Bed Characteristics + Year + Riparian Canopy” model (ΔAICc = 0.00), with a significant negative relationship with riparian canopy cover and a negative trend with D 50 , while the “Riparian Canopy + Year” model was also supported and showed the same negative relationship with riparian canopy cover (ΔAICc = 1.28, Table 4 ).