TABLE 2. Occupancy models evaluating species, habitat, and environmental effects ranked by Akaike’s information criterion (ΔAICc). We assessed 67 models but just present models with ΔAICc ≤ 3. All models were made with the top ranked detection model p[VOL × ((BW + (TH = CB)) × carp × drum) + ((BW = TH = CB)) × shad = percids)]. We used top ranked species models for carp (bigheaded carp), drum (freshwater drum), shad (Clupeidae), and percids to formulate habitat models and top ranked habitat models to form environmental models. Covariates include backwater (BW), thalweg (TH), channel border (CB), Julian date (JUL), weekly water temperature (TEMP), CV of temperature (CVTEMP), weekly river discharge (DIS), CV of discharge (CVDIS). (+) indicates additive effects, (x) indicates interactive effects, and (=) indicates combined variables.