Interpreting spatial variation in ozone symptoms shown by cutleaf cone flower, Rudbeckia laciniata L.
Davison AW, Neufeld HS, Chappelka AH, Wolfe K, Finkelstein PL. 2003. Interpreting spatial variation in ozone symptoms shown by cutleaf cone flower, Rudbeckia laciniata L.. Environmental Pollution. 125:61-70
Researchers recorded visible injury, genetic variation, ozone concentrations, stomatal conduction and light in populations of cutleaf coneflower (Rudbeckia laciniata) at Purchase Knob and Clingmans Dome in Great Smoky Mountains National Park (USA). The researchers found some coneflower populations consist of very few genets whereas others are genetically very diverse, which was said to complicate interpretation of injury scores, and also raise the question if the species is a good bioindicator species. Also, the measurements of ozone, stomatal conductance and light gradients within plant canopies showed that variation in symptom expression in cutleaf coneflower is primarily due to variation in light, rather than ozone flux.
- Type
- Journal Article
- Authors
- Davison, A; Neufeld, H; Chappelka, A; Wolfe, Kirsten; Finkelstein, P
- Units
- ARD , GRSM
- Keywords
- AIRBIB, APHN, Appalachian Highlands Network, ARD_Park-Air-Info_Collection, cutleaf coneflower, Genetic Variation, Great Smoky Mountains National Park, GRSM, GRSM-00030, GRSM-00269, GRSM-00689, Light, Ozone, SER, Southeast Region, stomatal conductance, visible injury