Generalized linear model (GLM) predictions of the probability of C. fluminea presence across various habitat and landscape variables. Each subplot represents the relationship between C. fluminea presence (binary response) and a specific predictor variable from the best fitting model containing that predictor: (a) cobble substrate composition, (b) developed land within a 3 km radius (%), (c) stream width (meters). The y-axis displays the predicted probability of C. fluminea presence, with 95% confidence intervals indicated by the shaded bands. Variables were selected based on their ecological relevance to C. fluminea habitat preferences.