The effects of changing model weighting factors on the species-specific calculation of a qualitative juxtaposition index are assessed. The index used here was first developed by R.A. Mead et al. to aid in meeting legal mandates to assess wildlife habitat quality over remote areas. The results indicate that, as more weighting factors were increased above threshold values, index values over test maps also increased. The results of these threshold tests were highly dependent on the spatial distribution of the original cover type map. This work has important theoretical and practical implications in the area of resource management.