Douglas C. Andersen S. Mark Nelson 1994 The butterfly community at a revegetated riparian site on the lower Colorado River near Parker, Arizona, was compared to that found in a reference riparian site. Data indicated that the herbaceous plant community, which was lacking at the revegetated site, was important to several butterfly taxa. An index using butterfly sensitivity to habitat change (species classified into risk groups) and number of taxa was developed to monitor revegetation projects and to determine restoration effectiveness. application/pdf 10.2307/3672237 en Southwestern Association of Naturalists An assessment of riparian environmental quality by using butterflies and disturbance susceptibility scores article