Fig. 6. Interaction plots of the percent error of the VISCOSITY and PERMEABILITY models (all parameter sets) fit to observed proportions of Calopteryx aequabilis and Calopteryx maculata along stream habitat, according to landscape type: forested (FO), partially forested (PF), and nonforested (NF). The parameter sets used for the two models are represented by the labels on the x-axis. For both models, the parameter sets differ with regard to the probability of moving off stream and/or variations in stream move lengths among landscape types: Basic, parameters are invariant among landscape types; Mstm, stream move length distributions vary among landscape types; Pmv, probabilities of moving off stream vary among landscape types; Both, both stream move length distributions and probabilities of moving off stream vary among landscape types. Data points are mean percentage of error ([predicted - observed]/observed x 100) of proportion of damselflies along streams, based on 40 simulation runs per landscape type (10 per individual landscape). The horizontal dotted line indicates perfect agreement between predicted and observed data. The horizontal dashed lines indicate the ± 25% cutoff between acceptable and poor model fit. Within- and among-landscape variation in model fits, best-fitting model(s) only, are presented in Fig. 7 (C. aequabilis) and Fig. 8 (C. maculata).
