Physiological Effects Of Ozone Air Pollution On RUDBECKIA LACINIATA In Great Smoky Mountains National Park

Cutleaf coneflower, Rudbeckia laciniata, is an herbaceous perennial wildflower that is a bioindicator for ozone and grows abundantly in the highest elevations of Great Smoky Mountains National Park (GRSM). This study used populations from Clingman's Dome and Purchase Knob in GRSM to determine physiological responses to ozone in the field, and from Watauga and Ashe Counties, NC, for a controlled exposure study in open-top chambers at Appalachian State University.