PHYSICAL HABITAT SIMULATION OF BARBEL (BA RBUS-BARBUS, L 1758) - SELECTION OF BIOLOGICAL MODELS BASED ON PREDICTABILITY CRITERIA

Habitat suitability curves and habitat use factorial models were elabo rated for Barbus barbus with data from 3 rivers. For the two cases, th ree local models, issued from data of one river, and one general model , constructed with all the data, were established. The predictive powe r and the sensitivity of the response showed that : 1) factorial model s are better for prediction than monovariate models, 2) the local mode ls were better than general models, and 3) the loss of predictive powe r was lower for the factorial general model than for the monovariate g eneral model.